CN109504405A - The system and method for handling corn stover - Google Patents
The system and method for handling corn stover Download PDFInfo
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- CN109504405A CN109504405A CN201811303141.5A CN201811303141A CN109504405A CN 109504405 A CN109504405 A CN 109504405A CN 201811303141 A CN201811303141 A CN 201811303141A CN 109504405 A CN109504405 A CN 109504405A
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- pyrolysis
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- corn stover
- stalk
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B43/00—Preventing or removing incrustations
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses the system and method for processing corn stover, system includes: crusher, and there is crusher corn stover entrance and corn stalk pellets to export；Stirring pool, stirring pool are connected with corn stover outlet after corn stalk pellets entrance, vinegar liquid entrance and acidleach and spent acid outlet, corn stalk pellets entrance with corn stalk pellets outlet；Drier, drier have corn stover entrance and dry corn stover outlet after acidleach, and corn stover entrance is connected with corn stover outlet after acidleach after acidleach；Pelletizer, pelletizer have dry corn stover entrance and stalk briquette outlet, and dry corn stover entrance is connected with dry corn stover outlet；There is stalk briquette entrance, pyrolysis oil gas vent and pyrolytic carbon outlet, stalk briquette entrance to be connected with stalk briquette outlet for pyrolysis installation, pyrolysis installation.Pyrolysis efficiency is significantly improved to corn stover processing using the system, gained bio-oil yield is significantly increased, gained biomass and pyrolysis gas quality with higher.
Description
Technical field
The invention belongs to biomass field of new energy technologies, specifically, the present invention relates to a kind of processing corn stovers
System and method.
Background technique
The pollution problem for perplexing national atmospheric environment always is polluted caused by crop straw burning.In order to seek basic solution way
Diameter, institute, Research of Environmental Sciences cooperate with Chemical Industry & Metallrygy Research Office of CAS, complete and " are provided using biomass such as corn stovers
Develop pyrolysis oil and mixed organic calcium desulfurization denitrification agent in source " technical research project.However corn stover contains a large amount of ash content,
If directly carrying out pyrolysis processing, the yield of bio-oil, biogas is not only reduced, influences the quality of biomass carbon, simultaneously
Increase pyrolysis energy consumption.
Therefore, the technology of existing processing corn stover needs further to be studied.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is the system and method for proposing a kind of processing corn stover, can be significant to corn stover processing using the system
Pyrolysis efficiency is improved, and gained bio-oil yield is significantly increased, gained biomass and pyrolysis gas quality with higher.
In one aspect of the invention, the invention proposes a kind of systems for handling corn stover.Reality according to the present invention
Example is applied, the system comprises:
There is corn stover entrance and corn stalk pellets to export for crusher, the crusher；
Stirring pool, the stirring pool have after corn stalk pellets entrance, vinegar liquid entrance and acidleach corn stover outlet and
Spent acid outlet, the corn stalk pellets entrance are connected with corn stalk pellets outlet；
Drier, the drier has corn stover entrance and dry corn stover outlet after acidleach, after the acidleach
Corn stover entrance is connected with corn stover outlet after the acidleach；
Pelletizer, the pelletizer have dry corn stover entrance and stalk briquette outlet, the dry corn stover
Entrance is connected with the dry corn stover outlet；
Pyrolysis installation, the pyrolysis installation have stalk briquette entrance, pyrolysis oil gas vent and pyrolytic carbon outlet, the straw
Stalk briquetting entrance is connected with stalk briquette outlet.
The system of processing corn stover according to an embodiment of the present invention is supplied by the corn stalk pellets obtained after being crushed
It is mixed into stirring pool with vinegar liquid, so that vinegar liquid carries out acidleach to corn stalk pellets, corn stalk can be significantly reduced
Ash content in stalk, then by corn stover after acidleach, successively supply carries out at pyrolysis into pyrolysis installation after dry and briquetting
Reason, not only significantly reduces pyrolysis cost, but also the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, can directly recycle
It utilizes, while obtained pyrolytic carbon ash content is substantially reduced, pyrolytic carbon and pyrolysis gas quality with higher.This Shen is used as a result,
System please not only solves in the prior art the directly high problem of pyrolysis corn stover energy consumption, and solves bio-oil production
The low problem low with calorific value of rate, while solving the problems, such as that pyrolytic carbon and pyrolysis gas quality are low, to truly realize beautiful
The resource utilization of rice stalk.
In addition, the system of processing corn stover according to the above embodiment of the present invention can also have following additional technology
Feature:
In some embodiments of the invention, above system further comprises: heat exchanger, and the heat exchanger has cooling water
Entrance, pyrolysis oil gas entrance, hot vapour outlet, pyrolysis gas outlet and oil water mixture outlet, the pyrolysis oil gas entrance with it is described
It is pyrolyzed oil gas vent to be connected, the hot vapour outlet is connected with the drier；Oily-water seperating equipment, the oily-water seperating equipment tool
There are oil water mixture entrance, bio-oil outlet and vinegar liquid outlet, the oil water mixture entrance to go out with the oil water mixture
Mouth is connected, and the vinegar liquid outlet is connected with the vinegar liquid entrance.Thus, it is possible to reduce acid while improving the energy and making full use of
Acid solution cost during leaching.
In some embodiments of the invention, above system further comprises: purification device, and the purification device has heat
Entrance vent one's spleen with purification pyrolysis gas outlet, the pyrolysis gas entrance is connected with the pyrolysis gas outlet, and the purification pyrolysis gas goes out
Mouth is connected with the pyrolysis installation；Burning boiler, the burning boiler have water inlet, fuel inlet, combustion product gases outlet and
Steam (vapor) outlet, the combustion inlet are connected with the purification pyrolysis gas outlet, and the steam (vapor) outlet is connected with the drier.By
This, can be further improved energy utilization rate, to reduce system energy consumption.
In some embodiments of the invention, the pyrolysis installation is revolving bed pyrolysis oven.
In some embodiments of the invention, the purification device includes the gas wash tower being sequentially connected, electrically trapped tar oil tower, draws
Blower and desulfurizing tower.Thus, it is possible to significantly improve the quality of purification pyrolysis gas.
In some embodiments of the invention, above system further comprises: standing device, the standing device has useless
Sour entrance, the outlet of upper layer vinegar liquid and subnatant outlet, the spent acid entrance are connected with spent acid outlet.Thus, it is possible to realize
The resource utilization of raw material.
In another aspect of the invention, the invention proposes a kind of methods for handling corn stover.It is according to the present invention
Embodiment, which comprises
(1) corn stover is supplied and carries out break process into the crusher, to obtain corn stalk pellets；
(2) corn stalk pellets are supplied into the stirring pool and is mixed with vinegar liquid, after obtaining acidleach
Corn stover and spent acid；
(3) corn stover after the acidleach is supplied into the drier and is dried, to obtain dry jade
Rice stalk；
(4) the dry corn stover is supplied and carries out briquetting into the pelletizer, to obtain stalk briquette；
(5) stalk briquette is supplied and carries out pyrolysis processing into the pyrolysis installation, so as to obtain pyrolysis oil gas and
Pyrolytic carbon.
The method of processing corn stover according to an embodiment of the present invention is supplied by the corn stalk pellets obtained after being crushed
It is mixed into stirring pool with vinegar liquid, so that vinegar liquid carries out acidleach to corn stalk pellets, corn stalk can be significantly reduced
Ash content in stalk, then by corn stover after acidleach, successively supply carries out at pyrolysis into pyrolysis installation after dry and briquetting
Reason, not only significantly reduces pyrolysis cost, but also the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, can directly recycle
It utilizes, while obtained pyrolytic carbon ash content is substantially reduced, pyrolytic carbon and pyrolysis gas quality with higher.This Shen is used as a result,
Method please not only solves in the prior art the directly high problem of pyrolysis corn stover energy consumption, and solves bio-oil production
Rate and the low problem of calorific value, while solving the problems, such as that pyrolytic carbon and pyrolysis gas quality are low, to truly realize corn
The resource utilization of stalk.
In addition, the method for processing corn stover according to the above embodiment of the present invention can also have following additional technology
Feature:
In some embodiments of the invention, the method further includes: (6) supply the pyrolysis oil gas to described
It exchanges heat in heat exchanger with cooling water, to obtain hot vapour, pyrolysis gas and oil water mixture, and the hot vapour is supplied to step
Suddenly the drier in (3)；(7) oil water mixture is supplied and carries out separating treatment into the oily-water seperating equipment,
To obtain bio-oil and vinegar liquid, and by the stirring pool in the vinegar liquid return step (2).Thus, it is possible to improving
Acid solution cost during reduction acidleach while the energy makes full use of.
In some embodiments of the invention, the method further includes: (8) supply the pyrolysis gas to described net
Middle carry out purified treatment is set in makeup, to be purified pyrolysis gas, and a part of the purification pyrolysis gas is supplied to step
(5) pyrolysis installation described in is as fuel；(9) by it is described purification pyrolysis gas another part supply into the burning boiler into
Row burning, to obtain combustion product gases and steam, and supplies the drier into step (3) for the steam.As a result, may be used
To further increase energy utilization rate, to reduce system energy consumption.
In some embodiments of the invention, the method further includes: (10) supply the spent acid to described quiet
It sets in device and is stood, so as to isolated upper layer vinegar liquid and subnatant.Thus, it is possible to realize the resource utilization of raw material.
In some embodiments of the invention, in step (1), the corn stalk pellets are not less than 8 mesh.As a result, may be used
To significantly improve subsequent acid leaching efficiency.
In some embodiments of the invention, in step (2), corn stalk pellets described in 1kg are based on, the vinegar liquid
Dosage is 15~20L.Thus, it is possible to the ash content in corn stover be significantly reduced, to improve the production of subsequent gained pyrolysis product
Rate and quality.
In some embodiments of the invention, in step (3), the dry corn stover moisture content is not higher than
40wt%.Thus, it is possible to significantly improve the pyrolysis efficiency of subsequent corn stover.
In some embodiments of the invention, in step (4), the heap density of the stalk briquette is 350~380kg/
m3.Thus, it is possible to further increase the pyrolysis efficiency of subsequent corn stover.
In some embodiments of the invention, in step (5), the temperature of the pyrolysis processing is 500~800 Celsius
Degree.Thus, it is possible to further increase the pyrolysis efficiency of subsequent corn stover.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the system structure diagram of processing corn stover according to an embodiment of the invention；
Fig. 2 is the system structure diagram of the processing corn stover of further embodiment according to the present invention；
Fig. 3 is the system structure diagram of the processing corn stover of another embodiment according to the present invention；
Fig. 4 is the system structure diagram of the processing corn stover of another embodiment according to the present invention；
Fig. 5 is the method flow schematic diagram of processing corn stover according to an embodiment of the invention；
Fig. 6 is the method flow schematic diagram of the processing corn stover of further embodiment according to the present invention；
Fig. 7 is the method flow schematic diagram of the processing corn stover of another embodiment according to the present invention；
Fig. 8 is the method flow schematic diagram of the processing corn stover of another embodiment according to the present invention；
Fig. 9 is the system structure diagram of the processing corn stover of another embodiment according to the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In one aspect of the invention, the invention proposes a kind of systems for handling corn stover.Reality according to the present invention
Example is applied, with reference to Fig. 1, which includes: crusher 100, stirring pool 200, drier 300, pelletizer 400 and pyrolysis installation 500.
According to an embodiment of the invention, blender 100 has corn stover entrance 101 and corn stalk pellets outlet 102,
And be suitable for carrying out break process to corn stover, obtain corn stalk pellets.Specifically, the corn stover obtained after crushing
The partial size of grain is not less than 8 mesh, can significantly improve the contacting efficiency of corn stover and vinegar liquid in subsequent process, improve corn stalk
The acid leaching efficiency of stalk to significantly reduce ash content in corn stover, and then improves the production of gained pyrolysis oil in subsequent pyrolytic process
Rate and calorific value, and gained pyrolytic carbon and pyrolysis gas quality with higher.
According to an embodiment of the invention, stirring pool 200 has corn stalk pellets entrance 201, vinegar liquid entrance 202 and acidleach
Corn stover outlet 203 and spent acid outlet 204, corn stalk pellets entrance 201 are connected with corn stalk pellets outlet 102 afterwards,
And be suitable for mixing corn stalk pellets obtained above with vinegar liquid (such as wooden vinegar) and carry out acidleach processing, obtain corn after acidleach
Stalk and spent acid.Specifically, corn stalk pellets and vinegar liquid are mixed, so that corn stover carries out acidleach, to acid
It is filtered after the completion of leaching, obtained smoke filtrate continues to drain into stirring pool reuse, and the corn stover of extraction is sent into subsequent dry dress
It sets and is dried, and the remaining vinegar liquid in stirring pool is no longer participate in secondary pickling stalk process, is discharged as spent acid.
According to one embodiment of present invention, during being somebody's turn to do, the corn stalk pellets based on 1kg, the dosage of vinegar liquid is 15
~20L, and leaching time is 2~10h.Inventors have found that only can be only achieved reduction corn stover under this mixing match
The purpose of middle ash content, and within the scope of this leaching time, with the increase of leaching time, ash content gone for corn stover after acidleach
Except rate gradually increases, best leaching time is 4~6 hours, during acidleach, need to be ceaselessly stirred to it, stirring rate
It should be uniformly unsuitable too fast.And the removal rate of the corn stover ash content after acidleach is up to 30% or more, wherein to potassium, magnesium, silicon
Removal effect is best, and to the removal rate of potassium up to 90%, the Calorific Value in Stem of Maize after removing ash content increases by 20%~40%, subsequent
Pyrolysis installation especially revolving bed pyrolysis oven energy consumption is reduced to 2.4GJ/t hereinafter, 20% or more energy conservation by 3GJ/t.
According to an embodiment of the invention, there is drier 300 corn stover entrance 301 after acidleach to go out with dry corn stover
Mouth 302, corn stover entrance 301 is connected with corn stover outlet 203 after acidleach after acidleach, and is suitable for acidleach obtained above
Corn stover is dried afterwards, obtains dry corn stover.Specifically, the drying temperature of the drier is 60~90 DEG C,
Drying time is not less than 20min, moisture content can from 80% be down to 40% hereinafter, and drying mode can using directly heating or
Indirect heating.
According to an embodiment of the invention, pelletizer 400 has dry corn stover entrance 401 and stalk briquette outlet 402,
Dry corn stover entrance 401 is connected with dry corn stover outlet 302, and suitable for dry corn stover obtained above into
Row briquetting, obtains stalk briquette.Specifically, by the drying corn stover of moisture content < 40% obtained above on a temperature 50 C left side
The right side is sent directly into pelletizer, the wide 30mm of the stalk briquette that pelletizer squeezes out, high 300mm, long 40mm~50mm, straw after extruding
Stalk briquetting moisture content < 20%, heap density is in 350~380kg/m3Left and right is used for pyrolysis installation such as revolving bed as raw material
Pyrolysis oven pyrolysis.
According to an embodiment of the invention, pyrolysis installation 500 has stalk briquette entrance 501, pyrolysis oil gas vent 502 and heat
Charcoal outlet 503 is solved, stalk briquette entrance 501 is connected with stalk briquette outlet 402, and is suitable for existing stalk briquette obtained above
Pyrolysis processing is carried out under anoxic condition, obtains pyrolysis oil gas and pyrolytic carbon, and the pyrolytic carbon yield of generation is down to 20% left side by 30%
The ash content on the right side, pyrolytic carbon is substantially reduced, and has higher quality.Specifically, pyrolysis installation 500 is revolving bed pyrolysis oven, and
It being heated using heat accumulation type radiant tube, it is heat supply in pyrolysis oven that heat accumulation type radiant tube, which carries out heat radiation by burning fuel, and
And monitoring material, burner hearth and radiant tube temperature are arranged to accurately control each region temperature in entire burner hearth sidewall and top
There are several oil gas introduction pipes, it is ensured that oil gas is cooling outside furnace and separates, so that it is guaranteed that equipment is run steadily in the long term, revolving bed heat
Solving furnace is 1.6t/h~3.2t/h to the processing capacity of corn stover briquetting.Revolving bed pyrolysis temperature is 500~800 DEG C, preferably
It is 600~650 DEG C, furnace bottom revolving speed, delivery rate, fabric thickness and cloth area can be changed according to the treating capacity of corn stover,
And inventor is furnace bottom revolving speed 35min/r, fabric thickness 60mm by probing into discovery, optimal operating condition, is pyrolyzed out under this operating condition
The pyrolytic carbon volatile matter come has reached preferable pyrolysis effect less than 10%.Inventors have found that by by above-mentioned after acidleach
Corn stover successively after drier and pelletizer supply pyrolysis processing is carried out into pyrolysis oven, due to significantly being dropped after acidleach
Ash content in low corn stover, then through subsequent pyrolysis processing, pyrolysis cost is not only significantly reduced, but also pyrolytic process obtains
Pyrolysis oil yield and calorific value it is higher, can directly recycle, while obtained pyrolytic carbon ash content is substantially reduced, pyrolytic carbon and
Pyrolysis gas quality with higher.
The system of processing corn stover according to an embodiment of the present invention is supplied by the corn stalk pellets obtained after being crushed
It is mixed into stirring pool with vinegar liquid, so that vinegar liquid carries out acidleach to corn stalk pellets, corn stalk can be significantly reduced
Ash content in stalk, then by corn stover after acidleach, successively supply carries out at pyrolysis into pyrolysis installation after dry and briquetting
Reason, not only significantly reduces pyrolysis cost, but also the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, can directly recycle
It utilizes, while obtained pyrolytic carbon ash content is substantially reduced, pyrolytic carbon and pyrolysis gas quality with higher.This Shen is used as a result,
System please not only solves in the prior art the directly high problem of pyrolysis corn stover energy consumption, and solves bio-oil production
Rate and the low problem of calorific value, while solving the problems, such as that pyrolytic carbon and pyrolysis gas quality are low, to truly realize corn
The resource utilization of stalk.
According to an embodiment of the invention, the system of above-mentioned processing corn stover further comprises: heat exchanger 600 with reference to Fig. 2
With oily-water seperating equipment 700.
According to an embodiment of the invention, there is heat exchanger 600 cooling water inlet 601, pyrolysis oil gas entrance 602, hot vapour to go out
Mouth 603, pyrolysis gas outlet 604 and oil water mixture outlet 605, pyrolysis oil gas entrance 602 is connected with pyrolysis oil gas vent 502,
Hot vapour outlet 603 is connected with drier 300, and is suitable for supplying pyrolysis oil gas obtained in above-mentioned pyrolysis installation into heat exchanger
Indirect heat exchange is carried out with cooling water, so that pyrolysis oil gas is subjected to isolated pyrolysis gas (90 DEG C or less) and oil water mixture,
Cooling water is heated into hot vapour simultaneously, supplies through the hot vapour to drying device and uses as dried medium.
According to an embodiment of the invention, there is oily-water seperating equipment 700 oil water mixture entrance 701, bio-oil to export
702 and vinegar liquid outlet 703, oil water mixture entrance 701 and oil water mixture outlet 605 be connected, vinegar liquid exports 703 and enters with vinegar liquid
Mouth 202 is connected, and is suitable for above-mentioned isolated oil water mixture carrying out separating treatment, isolated biomass oil and vinegar
Liquid, and vinegar liquid is returned in stirring pool and is used.Specifically, can realize water-oil separating by the way of standing.Inventor passes through
Oil water mixture obtained above is separated, then supply above-mentioned isolated vinegar liquid makes into blender
With supplying to stirring pool the content of ashes reduced in corn stover by self-produced vinegar liquid, and fully meet corn stover
Acidleach needs, and cost needed for reducing purchase vinegar liquid realizes the self-sufficient of raw material, improves yield and the pyrolysis of bio-oil
Product quality increases benefit.It is exchanged heat as a result, by supplying pyrolysis oil gas obtained in pyrolysis installation into heat exchanger,
The Exposure degree for being pyrolyzed oil gas can be used for the drying process of corn stover after acidleach, energy is improved while reducing energy consumption
Source utilizes, while the separation to pyrolysis gas and oil water mixture in pyrolysis oil gas may be implemented after heat exchanger exchanges heat, and then will
Isolated oil water mixture is supplied to be separated into oily-water seperating equipment, can with isolated bio-oil and vinegar liquid,
And the vinegar liquid can be back to the acidleach process of corn stalk pellets, realize that internal system is self-sufficient.
According to an embodiment of the invention, the system of above-mentioned processing corn stover further comprises: purification device with reference to Fig. 3
800 and burning boiler 900.
According to an embodiment of the invention, purification device 800 has pyrolysis gas entrance 801 and purification pyrolysis gas outlet 802, heat
Entrance 801 of venting one's spleen is connected with pyrolysis gas outlet 604, and purification pyrolysis gas outlet 802 is connected with pyrolysis installation 500, and is suitable for just to
The isolated pyrolysis gas of above-mentioned heat exchanger carries out purified treatment, is purified pyrolysis gas, and by one of the purification pyrolysis gas
Divide supply to use into pyrolysis installation as burning, such as makes as in heat accumulation type radiant tube in revolving bed pyrolysis oven as fuel
With the purification pyrolysis gas calorific value of generation is higher than 2500kcal/m3, the corn stover gas yield after acidleach is by 35% original increasing
45% is added to, heat accumulation type radiant tube fuel combustion needs in revolving bed pyrolysis oven are fully met.Specifically, purification device include according to
Secondary connected gas wash tower, electrically trapped tar oil tower, air-introduced machine and desulfurizing tower.It should be noted that gas wash tower, electrically trapped tar oil tower, air inducing
The condition of each step is routine operation in the prior art in machine and desulfurizing tower, and those skilled in the art can be according to actual needs
It is selected.
According to an embodiment of the invention, burning boiler 900 has water inlet 901, fuel inlet 902, combustion product gases outlet
903 and steam (vapor) outlet 904, combustion inlet 902 is connected with purification pyrolysis gas outlet 802, steam (vapor) outlet 904 and 300 phase of drier
Even, and it is suitable for supplying the another part for the purification pyrolysis gas that above-mentioned purification obtains burning into burning boiler, is fired
Flue gas and steam are burnt, and steam is supplied to drier as dried medium.Specifically, the purification is pyrolyzed pneumatic transmission to the pot that burns
Furnace, the high-temperature steam of production is up to 350-400 DEG C.Hereby it is achieved that system fuel automatically supplies, the external world is relied on to reduce,
So that the system operatio is more flexible.
According to an embodiment of the invention, the system of above-mentioned processing corn stover further comprises standing device with reference to Fig. 4
1000。
According to an embodiment of the invention, stand device 1000 have spent acid entrance 1001, upper layer vinegar liquid outlet 1002 and under
Layer liquid outlet 1003, spent acid entrance 1001 is connected with spent acid outlet 204, and is suitable for standing in spent acid obtained in blender
Processing, thus the upper layer vinegar liquid and subnatant of isolated high-quality.Specifically, time of repose should be at six months or more, on this
Layer vinegar liquid available higher vinegar liquid of purity after rectification process, which can be with export trade, to increase economic efficiency.
The present invention In another aspect, the system that the invention proposes a kind of using above-mentioned processing corn stover handles beautiful
The method of rice stalk.According to an embodiment of the invention, with reference to Fig. 5, this method comprises:
S100: corn stover is supplied into crusher and carries out break process
In the step, corn stover is supplied into crusher and carries out break process, obtains corn stalk pellets.Specifically
, the partial sizes of the corn stalk pellets obtained after crushing is not less than 8 mesh, can significantly improve in subsequent process corn stover with
The contacting efficiency of vinegar liquid, improves the acid leaching efficiency of corn stover, to significantly reduce ash content in corn stover, and then after raising
The yield and calorific value of gained pyrolysis oil in continuous pyrolytic process, and gained pyrolytic carbon and pyrolysis gas quality with higher.
S200: corn stalk pellets are supplied into stirring pool and are mixed with vinegar liquid
In the step, corn stalk pellets obtained above are supplied into stirring pool and mixes and stirs with vinegar liquid (such as wooden vinegar)
It mixes and carries out acidleach processing, obtain corn stover and spent acid after acidleach.Specifically, corn stalk pellets mix stirring with vinegar liquid
It mixes, so that corn stover carries out acidleach, after be filtered after the completion of acidleach, obtained smoke filtrate continues to drain into stirring pool reuse,
The corn stover of extraction is sent into subsequent drying device and is dried, and the remaining vinegar liquid in stirring pool is no longer participate in secondary pickling straw
Stalk process is discharged as spent acid.
According to one embodiment of present invention, during being somebody's turn to do, the corn stalk pellets based on 1kg, the dosage of vinegar liquid is 15
~20L, and leaching time is 2~10h.Inventors have found that only can be only achieved reduction corn stover under this mixing match
The purpose of middle ash content, and within the scope of this leaching time, with the increase of leaching time, ash content gone for corn stover after acidleach
Except rate gradually increases, best leaching time is 4~6 hours, during acidleach, need to be ceaselessly stirred to it, stirring rate
It should be uniformly unsuitable too fast.And the removal rate of the corn stover ash content after acidleach is up to 30% or more, wherein to potassium, magnesium, silicon
Removal effect is best, and to the removal rate of potassium up to 90%, the Calorific Value in Stem of Maize after removing ash content increases by 20%~40%, subsequent
Pyrolysis installation especially revolving bed pyrolysis oven energy consumption is reduced to 2.4GJ/t hereinafter, 20% or more energy conservation by 3GJ/t.
S300: corn stover after acidleach is supplied and is dried into drier
In the step, corn stover after acidleach obtained above is supplied and is dried into drier, is done
Dry corn stover.Specifically, the drying temperature of the drier is 60~90 DEG C, drying time is not less than 20min, and moisture content can be from
80% be down to 40% hereinafter, and drying mode can be using directly heating or indirect heating.
S400: dry corn stover is supplied into pelletizer and carries out briquetting
In the step, dry corn stover obtained above is supplied into pelletizer and carries out briquetting, obtains stalk briquette.
Specifically, the drying corn stover of moisture content < 40% obtained above is sent directly into pelletizer in temperature 50 C or so, make
The wide 30mm of stalk briquette, high 300mm, the long 40mm~50mm that grain machine squeezes out, stalk briquette moisture content < 20% after extruding,
Heap density is in 350~380kg/m3Left and right is pyrolyzed as raw material for pyrolysis installation such as revolving bed pyrolysis oven.
S500: stalk briquette is supplied into pyrolysis installation and carries out pyrolysis processing
In the step, stalk briquette obtained above is supplied into pyrolysis installation and is carried out at pyrolysis under anoxic condition
Reason, obtains pyrolysis oil gas and pyrolytic carbon, the pyrolytic carbon yield of generation are down to 20% or so by 30%, and the ash content of pyrolytic carbon obviously drops
Low, pyrolytic carbon and pyrolysis gas have higher quality, and the yield of pyrolysis oil is significantly raised.Specifically, pyrolysis installation is rotation
Bed pyrolysis oven, and heated using heat accumulation type radiant tube, it is heat that heat accumulation type radiant tube, which carries out heat radiation by burning fuel,
Heat supply in furnace is solved, and monitors material, burner hearth and radiant tube temperature, so that each region temperature is accurately controlled, in entire burner hearth
Side wall and top are provided with several oil gas introduction pipes, it is ensured that oil gas is cooling outside furnace and separates, so that it is guaranteed that equipment is steady for a long time
Fixed operation, revolving bed pyrolysis oven are 1.6t/h~3.2t/h to the processing capacity of corn stover briquetting.Revolving bed pyrolysis temperature is
500~800 DEG C, preferably 600~650 DEG C can change furnace bottom revolving speed, delivery rate, cloth according to the treating capacity of corn stover
Thickness and cloth area, and inventor is by probing into discovery, optimal operating condition are furnace bottom revolving speed 35min/r, fabric thickness 60mm,
The pyrolytic carbon volatile matter for being pyrolyzed out under this operating condition has reached preferable pyrolysis effect less than 10%.Inventors have found that pass through by
Successively supply carries out pyrolysis processing into pyrolysis oven to the above-mentioned corn stover after acidleach after drier and pelletizer, due to
The ash content in corn stover is significantly reduced after acidleach, then through subsequent pyrolysis processing, not only significantly reduce pyrolysis cost, and
And the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, can directly recycle, while obtained pyrolytic carbon ash is clearly demarcated
It is aobvious to reduce, pyrolytic carbon and pyrolysis gas quality with higher.
The method of processing corn stover according to an embodiment of the present invention is supplied by the corn stalk pellets obtained after being crushed
It is mixed into stirring pool with vinegar liquid, so that vinegar liquid carries out acidleach to corn stalk pellets, corn stalk can be significantly reduced
Ash content in stalk, then by corn stover after acidleach, successively supply carries out at pyrolysis into pyrolysis installation after dry and briquetting
Reason, not only significantly reduces pyrolysis cost, but also the obtained pyrolysis oil yield of pyrolytic process and calorific value are higher, can directly recycle
It utilizes, while obtained pyrolytic carbon ash content is substantially reduced, pyrolytic carbon and pyrolysis gas quality with higher.This Shen is used as a result,
Method please not only solves in the prior art the directly high problem of pyrolysis corn stover energy consumption, and solves bio-oil production
Rate and the low problem of calorific value, while solving the problems, such as that pyrolytic carbon and pyrolysis gas quality are low, to truly realize corn
The resource utilization of stalk.
According to an embodiment of the invention, the method for above-mentioned processing corn stover further comprises with reference to Fig. 6:
S600: pyrolysis oil gas is supplied and is exchanged heat into heat exchanger with cooling water, and hot vapour is supplied to S300
In the step, pyrolysis oil gas obtained in above-mentioned pyrolysis installation is supplied into heat exchanger and is carried out indirectly with cooling water
Heat exchange, so that pyrolysis oil gas is carried out isolated pyrolysis gas (90 DEG C or less) and oil water mixture, while cooling water is heated
Become hot vapour, is used through the drying device that the hot vapour is supplied to step S300 as dried medium.
S700: oil water mixture is supplied into oily-water seperating equipment and carries out separating treatment, and vinegar liquid is returned into S200
In the step, above-mentioned isolated oil water mixture is supplied into oily-water seperating equipment and carries out separating treatment,
Isolated bio-oil and vinegar liquid, and will be used in the stirring pool of vinegar liquid return step S200.Specifically, can be using standing
Mode realize water-oil separating.Then inventor is separated by separating oil water mixture obtained above by above-mentioned
To vinegar liquid supply into blender and carry out using supplying to stirring pool the ash reduced in corn stover by self-produced vinegar liquid
Divide content, and fully meet corn stover acidleach needs, cost needed for reducing purchase vinegar liquid realizes the self-sufficiency of raw material certainly
Foot improves the yield of pyrolysis product, increases benefit.As a result, by supplying pyrolysis oil gas obtained in pyrolysis installation to heat exchange
It exchanges heat in device, the Exposure degree for being pyrolyzed oil gas can be used for the drying process of corn stover after acidleach, reducing energy
Using energy source is improved while consumption, while may be implemented after heat exchanger exchanges heat to pyrolysis gas and oil water mixture in pyrolysis oil gas
Separation, then isolated oil water mixture is supplied and is separated into oily-water seperating equipment, can be with isolated life
Substance oil and vinegar liquid, and the vinegar liquid can be back to the acidleach process of corn stalk pellets, realize that internal system is self-sufficient.
According to an embodiment of the invention, the method for above-mentioned processing corn stover further comprises with reference to Fig. 7:
S800: pyrolysis gas being supplied into purification device and carries out purified treatment, and a part for purifying pyrolysis gas is supplied
To step S500
In the step, the isolated pyrolysis gas of above-mentioned heat exchanger is supplied into purification device and carries out purified treatment, is obtained
Make to purification pyrolysis gas, and by a part supply of the purification pyrolysis gas in the pyrolysis installation into step S500 as burning
With, such as it is used as fuel to use as in heat accumulation type radiant tube in revolving bed pyrolysis oven, the purification of generation is pyrolyzed gas calorific value and is higher than
2500kcal/m3, the corn stover gas yield after acidleach increases to 45% by original 35%, fully meets revolving bed pyrolysis
Heat accumulation type radiant tube fuel combustion needs in furnace.Specifically, purification device include the gas wash tower being sequentially connected, electrically trapped tar oil tower,
Air-introduced machine and desulfurizing tower.It should be noted that the condition of each step is in gas wash tower, electrically trapped tar oil tower, air-introduced machine and desulfurizing tower
Routine operation in the prior art, those skilled in the art can select according to actual needs.
S900: the another part for purifying pyrolysis gas is supplied and is burnt into burning boiler, and steam is supplied to step
Rapid S300
In the step, the another part for the purification pyrolysis gas that above-mentioned purification obtains is supplied and is fired into burning boiler
It burns, obtains combustion product gases and steam, and steam is supplied into the drier into step S300 as dried medium.Specifically, should
Purification pyrolysis pneumatic transmission is to burning boiler, and the high-temperature steam of production is up to 350-400 DEG C.Hereby it is achieved that system fuel automatically supplies, from
And reduce and the external world is relied on, so that the system operatio is more flexible.
According to an embodiment of the invention, the method for above-mentioned processing corn stover further comprises with reference to Fig. 8:
S1000: spent acid is supplied into standing device and is stood
In the step, spent acid obtained in step S200 blender is supplied and carries out stewing process into standing device, from
And the upper layer vinegar liquid and subnatant of isolated high-quality.Specifically, time of repose should be at six months or more, upper layer vinegar liquid warp
The available higher vinegar liquid of purity after rectification process is crossed, which can be with export trade, to increase economic efficiency.
It should be noted that feature and advantage described in the above-mentioned system for processing corn stover are equally applicable to this
The method for handling corn stover, details are not described herein again.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, without limiting the invention in any way.
Embodiment 1
With reference to Fig. 9, corn stover is supplied into crusher and carries out break process, obtaining corn stalk pellets, (partial size is big
In 8 mesh), then corn stalk pellets are supplied into stirring pool and are mixed with the wooden vinegar, corn stover and useless is obtained after acidleach
Acid (is based on 1kg corn stalk pellets, the dosage of the wooden vinegar is 15L, and leaching time is 6 hours), after acidleach corn stover supply to
(drying temperature is 60 DEG C, and drying time is not less than 20min) is dried in drier, obtains dry corn stover and (contains
Water rate is lower than 40%)；Dry corn stover, which is supplied into pelletizer, carries out briquetting, obtain stalk briquette (the wide 30mm of stalk briquette,
High 300mm, long 40mm, stalk briquette moisture content < 20% after extruding, heap density is in 380kg/m3), stalk briquette supply to
Pyrolysis processing (650 DEG C of pyrolysis processing temperature, furnace bottom revolving speed 35min/r, fabric thickness 60mm) are carried out in revolving bed pyrolysis oven, are obtained
To pyrolysis oil gas and pyrolytic carbon, pyrolysis oil gas is supplied and is exchanged heat into heat exchanger with cooling water, obtain hot vapour, pyrolysis gas and
Oil water mixture, and hot vapour is supplied to drier as dried medium, oil water mixture is supplied into oily-water seperating equipment
Carry out separating treatment, obtain bio-oil and vinegar liquid, and by the stirring pool in vinegar liquid return step S200, by pyrolysis gas supply to
Purified treatment is carried out in purification device, is purified pyrolysis gas, and a part supply to the revolving bed for purifying pyrolysis gas is pyrolyzed
It is used as fuel in the heat accumulation type radiant tube of furnace, the another part for purifying pyrolysis gas is supplied and is burnt into burning boiler, is obtained
To combustion product gases and steam, and steam is supplied into drier and is used as dried medium, it will be isolated in blender
Spent acid is supplied into standing device and is stood, isolated upper layer vinegar liquid and subnatant.
Embodiment 2
With reference to Fig. 9, corn stover is supplied into crusher and carries out break process, obtaining corn stalk pellets, (partial size is big
In 8 mesh), then corn stalk pellets are supplied into stirring pool and are mixed with the wooden vinegar, corn stover and useless is obtained after acidleach
Acid (is based on 1kg corn stalk pellets, the dosage of the wooden vinegar is 20L, and leaching time is 4 hours), after acidleach corn stover supply to
(drying temperature is 90 DEG C, and drying time is not less than 20min) is dried in drier, obtains dry corn stover and (contains
Water rate is lower than 40%)；Dry corn stover, which is supplied into pelletizer, carries out briquetting, obtain stalk briquette (the wide 30mm of stalk briquette,
High 300mm, long 50mm, stalk briquette moisture content < 20% after extruding, heap density is in 350kg/m3), stalk briquette supply to
Pyrolysis processing (600 DEG C of pyrolysis processing temperature, furnace bottom revolving speed 35min/r, fabric thickness 60mm) are carried out in revolving bed pyrolysis oven, are obtained
To pyrolysis oil gas and pyrolytic carbon, pyrolysis oil gas is supplied and is exchanged heat into heat exchanger with cooling water, obtain hot vapour, pyrolysis gas and
Oil water mixture, and hot vapour is supplied to drier as dried medium, oil water mixture is supplied into oily-water seperating equipment
Carry out separating treatment, obtain bio-oil and vinegar liquid, and by the stirring pool in vinegar liquid return step S200, by pyrolysis gas supply to
Purified treatment is carried out in purification device, is purified pyrolysis gas, and a part supply to the revolving bed for purifying pyrolysis gas is pyrolyzed
It is used as fuel in the heat accumulation type radiant tube of furnace, the another part for purifying pyrolysis gas is supplied and is burnt into burning boiler, is obtained
To combustion product gases and steam, and steam is supplied into drier and is used as dried medium, it will be isolated in blender
Spent acid is supplied into standing device and is stood, isolated upper layer vinegar liquid and subnatant.
1 corn stalk raw material of table and embodiment 1,2 Industrial Analysis
As seen from the above table, the stalk after wood vinegar acidleach, content of ashes are substantially reduced, and the removal rate of acidleach for 24 hours is
35% or so, volatile matter content obviously increases.
2 thermal decomposition product yield (butt) of table
As seen from the above table, with the corn stover of wood vinegar acidleach, tar yield increases to 28% or so by 21.82%, and gas produces
Rate is down to 20% or so by 21.39%, and charcoal yield is down to 32.5% or so by 35.08%, and aquatic products rate is down to 20% from 21.7%
Left and right.
3 pyrolysis product quality of table
Compared with corn stalk raw material pyrolytic carbon, content of ashes is substantially reduced stalk pyrolytic carbon after acidleach, reduces 14%,
Fixed carbon content has increased slightly；In addition, the stalk pyrolysis gas calorific value after acidleach is slightly higher, about 2500kcal/m3。
Note: in table 1- table 3 the corresponding data of corn stalk raw material be lack the application acid solution process and gained experiment number
According to.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of system for handling corn stover characterized by comprising
There is corn stover entrance and corn stalk pellets to export for crusher, the crusher；
Stirring pool, the stirring pool is with corn stover outlet and spent acid after corn stalk pellets entrance, vinegar liquid entrance and acidleach
Outlet, the corn stalk pellets entrance are connected with corn stalk pellets outlet；
Drier, the drier have corn stover entrance and dry corn stover outlet after acidleach, corn after the acidleach
Stalk entrance is connected with corn stover outlet after the acidleach；
Pelletizer, the pelletizer have dry corn stover entrance and stalk briquette outlet, the dry corn stover entrance
It is connected with the dry corn stover outlet；
Pyrolysis installation, the pyrolysis installation have stalk briquette entrance, pyrolysis oil gas vent and pyrolytic carbon outlet, the stalk pressure
Block entrance is connected with stalk briquette outlet.
2. system according to claim 1, which is characterized in that further comprise:
Heat exchanger, the heat exchanger have cooling water inlet, pyrolysis oil gas entrance, hot vapour outlet, pyrolysis gas outlet and grease mixed
Object outlet is closed, the pyrolysis oil gas entrance is connected with the pyrolysis oil gas vent, and the hot vapour outlet is connected with the drier；
Oily-water seperating equipment, the oily-water seperating equipment have oil water mixture entrance, bio-oil outlet and vinegar liquid outlet, institute
It states oil water mixture entrance to be connected with oil water mixture outlet, the vinegar liquid outlet is connected with the vinegar liquid entrance.
3. system according to claim 1 or 2, which is characterized in that further comprise:
Purification device, the purification device have pyrolysis gas entrance and purification pyrolysis gas outlet, the pyrolysis gas entrance with it is described
Pyrolysis gas outlet is connected, and the purification pyrolysis gas outlet is connected with the pyrolysis installation；
Burning boiler, the burning boiler have water inlet, fuel inlet, combustion product gases outlet and steam (vapor) outlet, the burning
Entrance is connected with the purification pyrolysis gas outlet, and the steam (vapor) outlet is connected with the drier,
Optional, the pyrolysis installation is revolving bed pyrolysis oven,
Optional, the purification device includes the gas wash tower being sequentially connected, electrically trapped tar oil tower, air-introduced machine and desulfurizing tower.
4. system according to claim 1, which is characterized in that further comprise:
Stand device, the standings device have spent acid entrance, upper layer vinegar liquid outlet and subnatant outlet, the spent acid entrance and
The spent acid outlet is connected.
5. a kind of method using system of any of claims 1-4 processing corn stover, which is characterized in that packet
It includes:
(1) corn stover is supplied and carries out break process into the crusher, to obtain corn stalk pellets；
(2) corn stalk pellets are supplied into the stirring pool and is mixed with vinegar liquid, to obtain corn after acidleach
Stalk and spent acid；
(3) corn stover after the acidleach is supplied into the drier and is dried, to obtain dry corn stalk
Stalk；
(4) the dry corn stover is supplied and carries out briquetting into the pelletizer, to obtain stalk briquette；
(5) stalk briquette is supplied and carries out pyrolysis processing into the pyrolysis installation, to obtain pyrolysis oil gas and pyrolysis
Charcoal.
6. according to the method described in claim 5, it is characterized in that, further comprising:
(6) the pyrolysis oil gas is supplied and is exchanged heat into the heat exchanger with cooling water, so as to obtain hot vapour, pyrolysis gas and
Oil water mixture, and the hot vapour is supplied into the drier into step (3)；
(7) oil water mixture is supplied and carries out separating treatment into the oily-water seperating equipment, to obtain bio-oil
And vinegar liquid, and by the stirring pool in the vinegar liquid return step (2).
7. method according to claim 5 or 6, which is characterized in that further comprise:
(8) pyrolysis gas is supplied and carries out purified treatment into the purification device, to be purified pyrolysis gas, and by institute
The a part for stating purification pyrolysis gas is supplied to pyrolysis installation described in step (5) as fuel；
(9) another part of the purification pyrolysis gas is supplied into the burning boiler and is burnt, to obtain burning cigarette
Gas and steam, and the steam is supplied into the drier into step (3).
8. according to the method described in claim 5, it is characterized in that, further comprising:
(10) spent acid is supplied into the standing device and is stood, so as to isolated upper layer vinegar liquid and subnatant.
9. according to the method described in claim 5, it is characterized in that, the corn stalk pellets are not less than 8 in step (1)
Mesh；
Optional, in step (2), based on corn stalk pellets described in 1kg, the dosage of the vinegar liquid is 15~20L.
10. according to the method described in claim 5, it is characterized in that, in step (3), the dry corn stover moisture content
Not higher than 40wt%；
Optional, in step (4), the heap density of the stalk briquette is 350~380kg/m3；
Optional, in step (5), the temperature of the pyrolysis processing is 500~800 degrees Celsius.
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| CN201811303141.5A CN109504405A (en) | 2018-11-02 | 2018-11-02 | The system and method for handling corn stover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112779034A (en) * | 2019-11-28 | 2021-05-11 | 浙江科技学院 | Device and method for preparing light aromatic hydrocarbon from biomass |
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