CN107473562A - Utilize the sludge drying system and sludge drying method of used heat flue gas - Google Patents
Utilize the sludge drying system and sludge drying method of used heat flue gas Download PDFInfo
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- CN107473562A CN107473562A CN201710929371.1A CN201710929371A CN107473562A CN 107473562 A CN107473562 A CN 107473562A CN 201710929371 A CN201710929371 A CN 201710929371A CN 107473562 A CN107473562 A CN 107473562A
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- 238000001035 drying Methods 0.000 title claims abstract description 177
- 239000010802 sludge Substances 0.000 title claims abstract description 167
- 239000003546 flue gas Substances 0.000 title claims abstract description 65
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000000428 dust Substances 0.000 claims abstract description 58
- 239000000779 smoke Substances 0.000 claims abstract description 55
- 230000008676 import Effects 0.000 claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 239000002826 coolant Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 19
- 239000003507 refrigerant Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000009833 condensation Methods 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 239000002887 superconductor Substances 0.000 claims description 4
- 238000011017 operating method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000010865 sewage Substances 0.000 abstract 1
- 238000013461 design Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000012546 transfer Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- -1 air heat exchanger Chemical compound 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000001599 direct drying Methods 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses the sludge drying system and sludge drying method using used heat flue gas, the system includes air heat exchanger, multilevel belt type drying machine, dust removal filter, condenser；Air heat exchanger includes cold wind import, hot-blast outlet, heat smoke import, heat smoke outlet, heat exchanger body and air flow conduit；Heat exchanger body carries out heat exchange processing by the heat smoke being passed through to the air in air flow conduit；Multilevel belt type drying machine includes hot wind inlet, hot-blast outlet, sludge inlet, dewatered sludge discharge port and drying machine body；The system utilizes the heat in flue gas, and air is heated, and then carries out subsequent sludge drying processing by air.Air is recycled in system, is in a closed cycle system, arranged outside no foul smell, so this system is without Odor control as heat transferring medium and the carrier of moisture.The condensed rear formation liquid of steam and discharge system dried out from sludge, into sewage disposal system.
Description
Technical field
The present invention relates to technical field of drying, more particularly to sludge drying system and sludge drying using used heat flue gas
Method.
Background technology
Existing mainly have two kinds using the sludge drying technique of used heat or waste heat flue gas, respectively the direct desiccation of flue gas and
Flue gas indirectly drying, and both drying techniques are that waste heat flue gas is passed directly into sludge dryer.
Above-mentioned convection drying device has drum dryer, belt dryer, and indirect dryer mainly has hollow paddle type to do
Dry device and pan dryer, no matter the drying of that form, such technology is all heating agent and sludge carries out direct or indirect change
Heat, although it reaches the purpose of dry sludge；But in two class systems, it can all produce substantial amounts of flue gas and (wherein especially roll
Cylinder drier, the drum dryer exhaust gas volumn of direct contact type is bigger, and indirect type hollow blade or disc type are smaller), but need
The flue gas of discharge is subjected to vent gas treatment, including dedusting, cooling, deodorization, directly discharged after reaching the emission request of environmental protection.
But it is clear that the latent heat in a large amount of vapor contained in the flue gas of discharge be not effectively utilized and
Fallen by subsequent gases processing unit processes, this has resulted in a large amount of wastes of energy.And in traditional sludge drying system
Foul smell and substantial amounts of dust containing complexity can not be handled in time, therefore it will further result in the pollution of environment；And
And because flue-gas temperature is higher, in direct anhydration system, substantial amounts of dust can be contained, a large amount of dust of discharge is easily drawn again
Explosion accident is sent out, the hidden danger brought to safety in production.
The content of the invention
It is an object of the invention to provide a kind of sludge drying system and sludge drying method using used heat flue gas, with
Solve the above problems.
In order to achieve the above object, the technical proposal of the invention is realized in this way：
The invention provides a kind of sludge drying system using used heat flue gas, including air heat exchanger, multilevel belt type
Drying machine, dust removal filter, condenser；
By more between the air heat exchanger, the multilevel belt type drying machine, the dust removal filter, the condenser
Section connecting pipe connects to form closed-cycle system；
The air heat exchanger includes cold wind import, hot-blast outlet, heat smoke import, heat smoke outlet, heat exchanger body
And air flow conduit；The air flow conduit is used for ventilating air, and the both ends of the air flow conduit are respectively communicated with
The cold wind import and the hot-blast outlet；The heat smoke import is used to be passed through heat smoke；The heat smoke is exported for arranging
Go out heat smoke；The heat smoke that the heat exchanger body is used to be passed through exchanges heat to the air in the air flow conduit
Heat；
The multilevel belt type drying machine includes hot wind inlet, hot-blast outlet, sludge inlet, dewatered sludge discharge port and drying
Machine body；The hot wind inlet is connected by connecting pipe with the hot-blast outlet of the air heat exchanger, and the hot-blast outlet leads to
Cross the inlet communication of connecting pipe and the dust removal filter；The drying machine body is used to drive sludge by conveyer belt mode
Entered from sludge inlet inside the drying machine body, and eventually through dewatered sludge discharge port discharge, during to sludge
Processing is dried；
The dust removal filter is connected by connecting pipe with the condenser；The dust removal filter is used for described more
The damp-heat air of the hot-blast outlet outflow of level band drier carries out dust removal and filtration processing；
The condenser include condenser hot wind inlet, cold wind outlet, cooling water inlet, warm water export and condenser body,
External refrigerant conveying and heat abstractor；The condenser hot wind inlet is used to be passed through damp-heat air；The cold wind is exported for defeated
Go out condensed air；The external refrigerant conveying and heat abstractor are respectively communicated with cooling water inlet and warm water outlet；The cold water
Import is used to be passed through coolant media into condenser body；The warm water, which exports, to be used for the intrinsic cold media of the condenser
Matter is discharged；The condenser body is used for the institute to surrounding by the coolant media in the external refrigerant conveying and heat abstractor
State damp-heat air and carry out condensation process.
Preferably, can embodiment as one kind；Blower fan is additionally provided between the dust removal filter and the condenser；
And the blower fan is connected with the dust removal filter and the condenser respectively by connecting pipe.
Preferably, can embodiment as one kind；The outlet and the import of the blower fan of the dust removal filter pass through one
Section connecting pipe connection, passes through one section of connecting pipe between the outlet of the blower fan and the condenser hot wind inlet of the condenser
Connection, and the cold wind outlet of the condenser is connected with the cold wind import of the air heat exchanger by one section of connecting pipe.
Preferably, can embodiment as one kind；The sludge drying system using used heat flue gas also includes sludge
Preheating device；The sludge preheating device is used to carry out at heating the sludge before entering the multilevel belt type drying machine in advance
Reason.
Preferably, can embodiment as one kind；The sludge preheating device is heater.
Preferably, can embodiment as one kind；The coolant media is water.
Preferably, can embodiment as one kind；The air heat exchanger is finned tube exchanger or with superconductor system
The air heat exchanger of work.
Preferably, can embodiment as one kind；The blower fan is axial fan or centrifugal fan.
Correspondingly, present invention also offers a kind of sludge drying method, by using the sludge drying system of used heat flue gas
System implements sludge drying processing, including following operating procedure：
Air heat exchanger carries out heating operation using heat smoke to air：Cleaning heat smoke after dust removal process passes through
The heat smoke import of air heat exchanger, which enters and exported from heat smoke, to be exported；Meanwhile heat smoke is changed being passed into from cold wind import
The hot intrinsic air of device is heated, and exits into multilevel belt type drying machine by hot-blast outlet；
Multilevel belt type drying machine using the air after heating to sludge being dried processing：Passed through by drying machine body
Conveyer belt mode drives sludge to be entered from sludge inlet inside drying machine body, and is arranged eventually through dewatered sludge discharge port
Go out；Air heat simultaneously after enters from hot wind inlet and discharged from hot-blast outlet, and directly in the drying machine body
Processing is dried in sludge；
Dust removal filter carries out dust removal process to the hot-blast outlet outflow damp-heat air from the multilevel belt type drying machine；
The driving of blower fan drives the air after dedusting to enter condenser；
Condenser hot wind inlet is used to be passed through damp-heat air；Cold wind outlet exports condensed air；Cooling water inlet is to cold
Coolant media is passed through in condenser body；Warm water outlet is discharged by the intrinsic coolant media of the condenser；Meanwhile condenser sheet
Body to by external refrigerant convey and heat abstractor in coolant media condensation process is carried out to the damp-heat air of surrounding, and condense
Air circulation after processing is delivered at the cold wind import of the air heat exchanger.Caused condensed water passes through discharge opening after condensation
System is washed in discharge.
Preferably, can embodiment as one kind；In the multilevel belt type drying machine to utilizing the air after heating to dirt
Mud is dried before processing step, is also comprised the following steps：Sludge preheating device to enter the multilevel belt type drying machine it
Preceding sludge is heated in advance.
Compared with prior art, this have the advantage that：
A kind of sludge drying system and sludge drying method using used heat flue gas provided by the invention, the analysis present invention
The primary structure for the sludge drying system using used heat flue gas that embodiment provides is understood：
The above-mentioned sludge drying system using used heat flue gas is mainly by air heat exchanger, multilevel belt type drying machine, dedusting
The structures such as filter, condenser and multistage connecting pipe are formed；The air heat exchanger, the multilevel belt type drying machine, institute
State and connect to form closed-cycle system by multistage connecting pipe between dust removal filter, the condenser；
Wherein, air heat exchanger includes cold wind import, hot-blast outlet, heat smoke import, heat smoke outlet, heat exchanger body
And air flow conduit；The heat smoke that heat exchanger body is used to be passed through is changed the air in the air flow conduit
Heat heats；
The multilevel belt type drying machine includes hot wind inlet, hot-blast outlet, sludge inlet, dewatered sludge discharge port and drying
Machine body；The drying machine body is used to drive sludge to enter the drying machine sheet from sludge inlet by conveyer belt mode
Internal portion, and eventually through dewatered sludge discharge port discharge, during sludge is dried processing；
The damp-heat air that the dust removal filter is used to flow out the hot-blast outlet of the multilevel belt type drying machine removes
Dirt filtration treatment；
The condenser include condenser hot wind inlet, cold wind outlet, cooling water inlet, warm water export and condenser body,
External refrigerant conveying and heat abstractor；Condenser body is used for by the refrigerant in the external refrigerant conveying and heat abstractor
Medium carries out condensation process to the damp-heat air of surrounding.
Wherein, mostly important structure is：The system architecture design of above-mentioned closed-cycle system and wherein specific every
The annexation of individual processing equipment and structure partial etc.；Sludge drying system provided by the invention using used heat flue gas,
Each processing equipment is carried out organically restructuring and according to certain layout designs and the supporting setting of connected mode order, composition by it
A kind of brand-new sludge drying system；
It will be apparent that traditional anhydration system is directly to carry out desiccation, structure to sludge using heat smoke (i.e. waste heat flue gas)
Simple and crude, heat smoke discharge also needs to be handled；
But the sludge drying system provided by the invention using used heat flue gas, heat smoke can be utilized, to secondary biography
Thermal medium is heated, and utilizes heat and the energy to the full extent.I.e. in the processing procedure of air heat exchanger, by hot cigarette
Gas is exchanged heat in air heat exchanger as primary energy, while using air as energy secondary Transfer Medium, air is entered
Row heating, for the air after follow-up multilevel belt type drying machine supply heating；
Then sludge drying processing, the processing are successively implemented by multilevel belt type drying machine by clean clean hot-air
Process will not produce a large amount of dust, directly can carry out drying and other treatment to the sludge in drying machine body；Moisture evaporation in sludge
Desiccation, subsequent hot-air absorb vapor in sludge, have been mixed to form damp-heat air；
Then pass through dust removal filter and carry out dust removal process；Then pass through the subsequent delivery that blower fan implements air；Due to wet
Contain substantial amounts of vapor in hot-air, therefore it has to pass through dewater treatment again；If without dewater treatment, damp and hot sky
Gas is directly again introduced into air heat exchanger and drying machine by the circulatory system, and the sludge being unfavorable in drying machine is dried into place
Reason；Because containing a large amount of vapor, and the air of high humidity can only increase the humidity of sludge, be unfavorable for drying machine drying process.
It will be apparent that a kind of sludge drying system and sludge drying method using used heat flue gas provided by the invention, its
A large amount of flue gases will not be produced, flue gas will not be directly used in sludge drying processing, therefore flue gas will not be discharged；It can be weighed simultaneously
The heat in flue gas is utilized again, Reusability, is that air is heated to secondary Transfer Medium, is then carried out by air follow-up
Drying sludge processing；
Drying and other treatment is directly carried out using heat smoke due to avoiding, therefore the foul smell of complexity is will be free from drying system
And substantial amounts of dust；The potential safety hazards such as blast are prevented.
In summary, the sludge drying system and sludge drying method provided by the invention using used heat flue gas, it is dirty
Mud drying and other treatment significant effect, treatment effeciency is high, while avoids the waste of heat energy and the pollution of environment, has been truly realized maximum
Energy-conserving and environment-protective in degree.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the system architecture schematic diagram of the sludge drying system provided in an embodiment of the present invention using used heat flue gas；
Fig. 2 is the office of the air heat exchanger in the sludge drying system provided in an embodiment of the present invention using used heat flue gas
Portion's mplifying structure schematic diagram；
Fig. 3 is the multilevel belt type drying machine in the sludge drying system provided in an embodiment of the present invention using used heat flue gas
Partial enlargement structural representation；
Fig. 4 is that the part of the condenser in the sludge drying system provided in an embodiment of the present invention using used heat flue gas is put
Big structure schematic diagram.
Label：
1- air heat exchangers；101- cold wind imports；102- hot-blast outlets；103- heat smoke imports；104- heat smokes export；
105- heat exchanger bodies；
2- multilevel belt type drying machines；201- hot wind inlets；202- hot-blast outlets；203- sludge inlets；204- dewatered sludges
Discharge port；205- drying machine bodies；
3- dust removal filters；
4- blower fans；
5- condensers；501- condenser hot wind inlets；502- cold wind exports；503- cooling water inlets；504- warm water exports；
505- condenser bodies；The external refrigerant conveyings of 506- and heat abstractor；
6- connecting pipes.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The present invention is described in further detail below by specific examples of the implementation and with reference to accompanying drawing.
Referring to Fig. 1, a kind of sludge drying system using used heat flue gas provided in an embodiment of the present invention, including air change
Hot device 1 (see also Fig. 2), multilevel belt type drying machine 2 (see also Fig. 3), dust removal filter 3, condenser 5 (see also Fig. 4)；
Lead between the air heat exchanger 1, the multilevel belt type drying machine 2, the dust removal filter 3, the condenser 5
Cross the connection of multistage connecting pipe 6 and form closed-cycle system；
The air heat exchanger 1 includes cold wind import 101, hot-blast outlet 102, heat smoke import 103, heat smoke outlet
104th, heat exchanger body 105 and air flow conduit；The air flow conduit is used for ventilating air, and the air stream siphunculus
The both ends in road are respectively communicated with the cold wind import 101 and the hot-blast outlet 102；The heat smoke import 103 is used to be passed through heat
Flue gas；The heat smoke outlet 104 is used to discharge heat smoke；The heat exchanger body 105 is used for the heat smoke pair being passed through
Air in the air flow conduit carries out heat exchange processing；
The multilevel belt type drying machine 2 includes hot wind inlet 201, hot-blast outlet 202, sludge inlet 203, dewatered sludge and unloaded
Material mouth 204 and drying machine body 205；The hot wind inlet 201 passes through connecting pipe and the hot-blast outlet of the air heat exchanger 1
102 connections, the hot-blast outlet 202 pass through connecting pipe and the inlet communication of the dust removal filter 3；The drying machine body
205 are used to drive sludge to enter inside the drying machine body 205 from sludge inlet 203 by conveyer belt mode, and most
Discharged eventually by dewatered sludge discharge port 204, during sludge is dried processing；
The dust removal filter 3 is connected by connecting pipe with the condenser 5；The dust removal filter 3 is used for institute
State the damp-heat air progress dust removal and filtration processing that the hot-blast outlet 202 of multilevel belt type drying machine 2 flows out；
The condenser 5 includes condenser hot wind inlet 501, cold wind outlet 502, cooling water inlet 503, warm water outlet 504
With condenser body 505, the conveying of external refrigerant and heat abstractor 506；The condenser hot wind inlet 501 is used to be passed through damp and hot sky
Gas；The cold wind outlet 502 is used to export condensed air；The external refrigerant conveying and heat abstractor 506 are respectively communicated with
Cooling water inlet 503 and warm water outlet 504；The cooling water inlet 503 is used to be passed through coolant media into condenser body 505；Institute
Warm water outlet 504 is stated to be used to discharge the coolant media in the condenser body 505；The condenser body 505 is used to lead to
The coolant media crossed in the external refrigerant conveying and heat abstractor 506 carries out condensation process to the damp-heat air of surrounding.
The primary structure for analyzing the sludge drying system using used heat flue gas that the embodiments of the present invention provide is understood：
The above-mentioned sludge drying system using used heat flue gas mainly by air heat exchanger 1, multilevel belt type drying machine 2, remove
The structures such as dirt filter 3, condenser 5 and multistage connecting pipe 6 are formed；The air heat exchanger 1, the multilevel belt type are dried
Connect to form closed-cycle system by multistage connecting pipe between machine 2, the dust removal filter 3, the condenser 5；
Wherein, the air heat exchanger 1 includes cold wind import 101, hot-blast outlet 102, heat smoke import 103, heat smoke
Outlet 104, heat exchanger body 105 and air flow conduit；The heat smoke that heat exchanger body 105 is used to be passed through is to the sky
The air progress heat exchange processing that air-flow is threaded a pipe interior；
The multilevel belt type drying machine 2 includes hot wind inlet 201, hot-blast outlet 202, sludge inlet 203, dewatered sludge and unloaded
Material mouth 204 and drying machine body 205；The drying machine body 205 is used to drive sludge from sewage sludge feed by conveyer belt mode
Mouthful enter inside the drying machine body, and discharged eventually through dewatered sludge discharge port, during sludge is dried place
Reason；
The damp-heat air that the dust removal filter 3 is used to flow out the hot-blast outlet of the multilevel belt type drying machine removes
Dirt filtration treatment；
The condenser 5 includes condenser hot wind inlet 501, cold wind outlet 502, cooling water inlet 503, warm water outlet 504
With condenser body 505, the conveying of external refrigerant and heat abstractor 506；Condenser body 505 is used for defeated by the external refrigerant
Give and heat abstractor 506 in coolant media condensation process is carried out to the damp-heat air of surrounding.
It will be apparent that the sludge drying system provided by the invention using used heat flue gas, can utilize heat smoke, it is then right
Secondary heat transfer medium is heated, and utilizes heat and the energy to the full extent.Meanwhile it uses heat smoke due to avoiding
Drying and other treatment is carried out, therefore the foul smell of complexity and substantial amounts of dust are will be free from drying system；Potential safety hazard is prevented.
Below to the concrete structure and tool of the sludge drying system provided in an embodiment of the present invention using used heat flue gas
Body technique effect, which is done, to be described in detail：
Preferably, can embodiment as one kind；Wind is additionally provided between the dust removal filter 3 and the condenser 5
Machine 4；And the blower fan 4 is connected with the dust removal filter 3 and the condenser 5 respectively by connecting pipe.The blower fan 4 is
Axial fan or centrifugal fan.
It is unrelated with the form of blower fan it should be noted that the power resources of air circulation are in the driving of blower fan, either axle
Flow type fan, or centrifugal fan, or other any type of blower fans are within the scope of the present invention.
Preferably, can embodiment as one kind；The outlet and the import of the blower fan 4 of the dust removal filter 3 pass through
One section of connecting pipe connection, passes through one section between the outlet of the blower fan 4 and the condenser hot wind inlet 501 of the condenser 5
Connecting pipe connects, and the cold wind outlet 502 of the condenser 5 and the cold wind import 101 of the air heat exchanger 1 pass through one section
Connecting pipe connects.
Preferably, can embodiment as one kind；The sludge drying system using used heat flue gas also includes sludge
Preheating device；The sludge preheating device is used to heat the sludge before entering the multilevel belt type drying machine 2 in advance
Processing.The sludge preheating device is heater.
It should be noted that contact of the hot-air with sludge is completed in drier, any type of drier is equal
Within the scope of the present invention.Whether sludge does not change the essence of the present invention before drier is entered by heating, by pre-
The sensible heat obtained in warm can be absorbed during the sludge of heating, wherein moisture evaporation；Without pre-warmed useless
Liquid, then the heat required for moisture evaporation mostly come from the heat in air.But in order to improve condensation recovery Btu utilization
Possibility then carries out preheating to sludge and is helpful.
Preferably, can embodiment as one kind；The coolant media is water.
It should be noted that the sludge drying system provided in an embodiment of the present invention using used heat flue gas, its condenser
Used in coolant media can select to use material-structure form, such as：Cold water or other conventional coolant medias；This hair
The coolant media used in the sludge drying system using used heat flue gas that bright embodiment provides, can be diversified forms,
Water is a kind of preferable embodiment, and for other coolant medias, the present invention no longer repeats this one by one.
Preferably, can embodiment as one kind；The air heat exchanger 1 is finned tube exchanger or with superconductor system
The air heat exchanger of work.
It should be noted that air heating is completed using heat exchanger, but the form with heat exchanger is unrelated, either
Finned tube exchanger, or the air heat exchanger made of superconductor, or other any type of heat exchange belong to the present invention
Category.At the same time, the essence of condenser is also heat exchanger, the either any type of heat exchanger directly contacted or appoint
The heat exchanger of the indirect heat exchange of what form is all originally belonging to the category of invention；
In order to preferably implement to strengthen heat exchange efficiency；Above-mentioned air flow conduit is arranged on inside heat exchanger body, simultaneously
It all employs the airpath design of uniqueness to air flow conduit, and air-flow is good by property, and windage is small, and service life is longer；
Such as：" W " shape design for extending stretching is employed, can so ensure the outer shape of air flow conduit to the full extent
The inside of heat exchanger body is filled up to greatest extent, and then increases heat exchange area to greatest extent, increases heat exchanger time, and
At utmost raising heat exchanging efficiency.So as to ensure in the abundant intrinsic air flow conduit of heat exchanging device of more heat smokes
Air abundant heat exchange；The design heat exchanger effectiveness is higher, and energy consumption is relatively low；Simultaneously in order to which higher realization fully exchanges heat
Effect, above-mentioned air flow conduit can use high-quality heat-transfer matcrial, such as aluminum pipeline；The aluminum material is illustrated to lead
Hot property is more preferable, and energy recovery efficiency is higher.
Correspondingly, present invention also offers a kind of sludge drying method, by using the sludge drying system of used heat flue gas
System implements sludge drying processing, including following operating procedure：
Air heat exchanger 1 carries out heating operation using heat smoke to air：Cleaning heat smoke after dust removal process leads to
The heat smoke import 103 for crossing air heat exchanger 1 enters and exported from heat smoke outlet 104；Meanwhile heat smoke is to from cold wind import
101 air being passed into heat exchanger body 105 are heated, and are exited into multilevel belt type by hot-blast outlet 102 and done
Dry machine 2；
Multilevel belt type drying machine 2 using the air after heating to sludge being dried processing：Pass through drying machine body 205
Sludge is driven to be entered from sludge inlet 203 inside drying machine body 205 by conveyer belt mode, and eventually through dewatered sludge
Discharge port 204 is discharged；Air heat simultaneously after enters from hot wind inlet 201 and discharged from hot-blast outlet 202, and directly to institute
State the sludge in drying machine body 205 and processing is dried；
Dust removal filter 3 from the hot-blast outlet 202 of the multilevel belt type drying machine 2 outflow damp-heat air to carrying out at dedusting
Reason；
The driving of blower fan 4 drives the air after dedusting to enter condenser 5；
Condenser hot wind inlet 501 is used to be passed through damp-heat air；The condensed air of output of cold wind outlet 502；Cold water enters
Mouth 503 is passed through coolant media into condenser body 505；Warm water exports 504 by the coolant media in the condenser body 505
Discharge；Meanwhile condenser body 505 to by external refrigerant convey and heat abstractor 506 in coolant media to the wet of surrounding
Hot-air carries out condensation process, and the air circulation after condensation process is delivered to the cold wind import 101 of the air heat exchanger 1
Place.
It should be noted that the cleaning waste heat flue gas after dust removal process by air heat exchanger 1 to sealing and circulating system
Air in system is heated, heater use indirect heat transfer air heat exchanger 1, as air is heated, air it is relative
Humidity is gradually reduced, and the air after heating is passed through into multilevel belt type drying machine 2, can into the sludge in multilevel belt type drying machine 2
To be heated in advance, after hot dry air contacts with sludge, the heat vaporization in moisture absorption dry air in sludge,
So as to be escaped from sludge and form water vapour, now air forms the damp and hot sky of certain humidity due to absorbing moisture
Gas.Damp-heat air out, first passes through dust removal filter 3, then it enters under the driving of blower fan 4 from multilevel belt type drying machine 2
Direct or indirect heat exchanger can be used by entering to condenser 5, condenser 5, and refrigerant can use water at low temperature or other media, damp and hot
Air with water at low temperature by being exchanged heat, and with the reduction of air themperature, relative humidity gradually increases in air, when reaching
When 100%, then the vapor in air then condenses into water droplet, so as to out, complete the removing of moisture from air.After cooling
Air from condenser 5 come out after under the driving of blower fan 4, air heat exchanger 1 is turned again to, again by air heat exchanger 1
Heat smoke is heated, and humidity reduces, and the air after being heated is fed again into multilevel belt type drying machine 2, and circulation successively is gone down.
In this invention, because air is the carrier of Transfer Medium as heat and moisture, in internal system, it is not necessary to
Outer row, therefore the drying system does not need air treatment system, during the air circulation in order to not by drying after sludge
Dust is carried along into condenser system, it is only necessary to dust removal and filtration processing is carried out to air, filtering can use just effect and secondary filter
Combination, dedusting can use cyclone dust removal or bag-type dust or electrostatic precipitation, can rationally be selected according to the characteristic of dust
Select.
The system anury gas disposal is discharged.Within the condenser, because coolant media absorbs the heat and air of air
The latent heat that middle moisture condensation process is discharged, therefore, can be according to physical condition to being used to heat, so as to reach
The purpose of energy saving of system.
Preferably, can embodiment as one kind；In the multilevel belt type drying machine 2 to utilizing the air after heating to dirt
Mud is dried before processing step, is also comprised the following steps：
Sludge preheating device heats in advance to the sludge before entering the multilevel belt type drying machine 2.
Sludge drying system and sludge drying method provided in an embodiment of the present invention using used heat flue gas has as follows
The technical advantage of aspect：
First, the sludge drying system and sludge drying method provided in an embodiment of the present invention using used heat flue gas, it is above-mentioned
Using used heat flue gas sludge drying system its mainly by including air heat exchanger, multilevel belt type drying machine, dust removal filter,
The structures such as condenser are formed；The air heat exchanger, the multilevel belt type drying machine, the dust removal filter, the condenser
Between connect to form closed-cycle system by multistage connecting pipe；At the same time, above-mentioned each device part has special
Structure design, and between concrete structure device connect, be laid out etc. all have cleverly design；Therefore, the embodiment of the present invention carries
The sludge drying system and sludge drying method using used heat flue gas supplied, its design is more reasonable, and system architecture is newer
Grain husk, function are more perfect.
2nd, the sludge drying system and sludge drying method provided in an embodiment of the present invention using used heat flue gas, its phase
There is preferable treatment effeciency than sludge drying system of the prior art；It will be apparent that sludge drying system of the prior art
Thermal pollution can be caused, be unfavorable for energy-conserving and environment-protective.However, the sludge drying provided in an embodiment of the present invention using used heat flue gas
System and sludge drying method, avoid using the direct drying and other treatment mode of heat smoke, therefore it will not be by the heat of heat smoke
Directly discharge, but be heated using the heat of heat smoke for circulation air, then carry out sludge drying using circulation air
Processing.Sludge drying system and sludge drying method provided in an embodiment of the present invention using used heat flue gas, it is to secondary biography
Thermal medium is heated, and utilizes heat and the energy to the full extent.
3rd, the sludge drying system and sludge drying method provided in an embodiment of the present invention using used heat flue gas, its by
Drying and other treatment is carried out using heat smoke in avoiding, therefore the foul smell of complexity and substantial amounts of powder are will be free from drying system
Dirt.
4th, the sludge drying system and sludge drying method provided by the invention using used heat flue gas, it also has knot
Structure is reasonable in design, system safety coefficient is high, highly reliable, all many technologies such as sludge drying efficiency high, energy-conserving and environment-protective are excellent
Gesture.
Many significant technical advantage based on more than, sludge drying system provided by the invention using used heat flue gas and
Sludge drying method, good market prospects and economic benefit will be brought.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of sludge drying system using used heat flue gas, it is characterised in that dried including air heat exchanger, multilevel belt type
Machine, dust removal filter, condenser；
Connected between the air heat exchanger, the multilevel belt type drying machine, the dust removal filter, the condenser by multistage
Connect pipeline communication and form closed-cycle system；
The air heat exchanger includes cold wind import, hot-blast outlet, heat smoke import, heat smoke outlet, heat exchanger body and sky
Air-flow is threaded a pipe；The air flow conduit is used for ventilating air, and the both ends of the air flow conduit be respectively communicated with it is described
Cold wind import and the hot-blast outlet；The heat smoke import is used to be passed through heat smoke；The heat smoke is exported for discharging heat
Flue gas；The heat smoke that the heat exchanger body is used to be passed through carries out heat exchange to the air in the air flow conduit
Processing；
The multilevel belt type drying machine includes hot wind inlet, hot-blast outlet, sludge inlet, dewatered sludge discharge port and drying machine sheet
Body；The hot wind inlet is connected by connecting pipe with the hot-blast outlet of the air heat exchanger, and the hot-blast outlet passes through company
The inlet communication in adapter road and the dust removal filter；The drying machine body is used to drive sludge from dirt by conveyer belt mode
Mud charging aperture is entered inside the drying machine body, and eventually through dewatered sludge discharge port discharge, during to sludge carry out
Drying process；
The dust removal filter is connected by connecting pipe with the condenser；The dust removal filter is used for the multistage band
The damp-heat air of the hot-blast outlet outflow of formula drying machine carries out dust removal and filtration processing；
The condenser includes condenser hot wind inlet, cold wind outlet, cooling water inlet, warm water export and condenser body, external
Refrigerant conveys and heat abstractor；The condenser hot wind inlet is used to be passed through damp-heat air；The cold wind exports cold for exporting
Air after solidifying；The external refrigerant conveying and heat abstractor are respectively communicated with cooling water inlet and warm water outlet；The cooling water inlet
For being passed through coolant media into condenser body；The warm water is exported for the intrinsic coolant media of the condenser to be arranged
Go out；The condenser body is used for by the coolant media in the external refrigerant conveying and heat abstractor to the described wet of surrounding
Hot-air carries out condensation process.
2. the sludge drying system of used heat flue gas is utilized as claimed in claim 1, it is characterised in that
Blower fan is additionally provided between the dust removal filter and the condenser；And the blower fan by connecting pipe respectively with institute
Dust removal filter is stated to connect with the condenser.
3. the sludge drying system of used heat flue gas is utilized as claimed in claim 2, it is characterised in that
The outlet of the dust removal filter is connected with the import of the blower fan by one section of connecting pipe, the outlet of the blower fan with
Connected between the condenser hot wind inlet of the condenser by one section of connecting pipe, and the cold wind outlet of the condenser and institute
The cold wind import for stating air heat exchanger is connected by one section of connecting pipe.
4. the sludge drying system of used heat flue gas is utilized as claimed in claim 3, it is characterised in that
The sludge drying system using used heat flue gas also includes sludge preheating device；The sludge preheating device be used for pair
Sludge before into the multilevel belt type drying machine is heated in advance.
5. the sludge drying system of used heat flue gas is utilized as claimed in claim 4, it is characterised in that
The sludge preheating device is heater.
6. the sludge drying system of used heat flue gas is utilized as claimed in claim 1, it is characterised in that
The coolant media is water.
7. the sludge drying system of used heat flue gas is utilized as claimed in claim 1, it is characterised in that
The air heat exchanger is finned tube exchanger or the air heat exchanger made of superconductor.
8. the sludge drying system of used heat flue gas is utilized as claimed in claim 2, it is characterised in that
The blower fan is axial fan or centrifugal fan.
9. a kind of sludge drying method, it is characterised in that pass through above-mentioned being given up using used heat as described in claim any one of 4-8
The sludge drying system of flue gas implements sludge drying processing, including following operating procedure：
Air heat exchanger carries out heating operation using heat smoke to air：Cleaning heat smoke after dust removal process passes through air
The heat smoke import of heat exchanger, which enters and exported from heat smoke, to be exported；Meanwhile heat smoke from cold wind import to being passed into heat exchanger
Intrinsic air is heated, and exits into multilevel belt type drying machine by hot-blast outlet；
Multilevel belt type drying machine using the air after heating to sludge being dried processing：Transmission is passed through by drying machine body
Band mode drives sludge to be entered from sludge inlet inside drying machine body, and is discharged eventually through dewatered sludge discharge port；Together
Air after Shi Jiare enters from hot wind inlet and discharged from hot-blast outlet, and directly the sludge in the drying machine body is entered
Row drying process；
Dust removal filter carries out dust removal process to the hot-blast outlet outflow damp-heat air from the multilevel belt type drying machine；
The driving of blower fan drives the air after dedusting to enter condenser；
Condenser hot wind inlet is used to be passed through damp-heat air；Cold wind outlet exports condensed air；Cooling water inlet is to condenser
Coolant media is passed through in body；Warm water outlet is discharged by the intrinsic coolant media of the condenser；Meanwhile condenser body pair
By external refrigerant convey and heat abstractor in coolant media condensation process, and condensation process are carried out to the damp-heat air of surrounding
Air circulation afterwards is delivered at the cold wind import of the air heat exchanger.
10. sludge drying method as claimed in claim 9, it is characterised in that add in the multilevel belt type drying machine to utilizing
Before processing step is dried to sludge in air after heat, also comprise the following steps：
Sludge preheating device heats in advance to the sludge before entering the multilevel belt type drying machine.
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| CN201710929371.1A CN107473562A (en) | 2017-10-09 | 2017-10-09 | Utilize the sludge drying system and sludge drying method of used heat flue gas |
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| CN201710929371.1A CN107473562A (en) | 2017-10-09 | 2017-10-09 | Utilize the sludge drying system and sludge drying method of used heat flue gas |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483848A (en) * | 2018-04-03 | 2018-09-04 | 河南浩德科技有限公司 | A kind of mud drying device |
| CN108911474A (en) * | 2018-09-10 | 2018-11-30 | 曾思贤 | A kind of belt type sludge low temperature drying equipment using waste heat |
| CN109516668A (en) * | 2018-12-19 | 2019-03-26 | 湖南大学 | A kind of new type low temperature hot wind sludge drying machine |
| CN110436734A (en) * | 2019-08-22 | 2019-11-12 | 南昌航空大学 | A kind of mud drying device of aquaculture |
| CN111380354A (en) * | 2020-04-14 | 2020-07-07 | 磐石自动化系统（深圳）有限公司 | Dryer tail gas circulation system |
| CN112939409A (en) * | 2021-02-01 | 2021-06-11 | 科蓝博(北京)环境技术有限公司 | Sludge heat drying system |
| CN113248107A (en) * | 2021-06-15 | 2021-08-13 | 山东高洁环保科技有限公司 | High-efficient sludge treatment equipment |
| CN113251786A (en) * | 2021-05-27 | 2021-08-13 | 四川华景智农农业开发有限责任公司 | Integrated superconductor multipurpose device and use method |
| CN113511794A (en) * | 2020-04-09 | 2021-10-19 | 北京轻松新源科技有限公司 | Energy-concerving and environment-protective type sludge treatment equipment |
| CN113754235A (en) * | 2021-09-26 | 2021-12-07 | 陕西延长中煤榆林能源化工有限公司 | Chemical waste residue and sludge drying device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483848A (en) * | 2018-04-03 | 2018-09-04 | 河南浩德科技有限公司 | A kind of mud drying device |
| CN108911474A (en) * | 2018-09-10 | 2018-11-30 | 曾思贤 | A kind of belt type sludge low temperature drying equipment using waste heat |
| CN109516668A (en) * | 2018-12-19 | 2019-03-26 | 湖南大学 | A kind of new type low temperature hot wind sludge drying machine |
| CN110436734A (en) * | 2019-08-22 | 2019-11-12 | 南昌航空大学 | A kind of mud drying device of aquaculture |
| CN113511794A (en) * | 2020-04-09 | 2021-10-19 | 北京轻松新源科技有限公司 | Energy-concerving and environment-protective type sludge treatment equipment |
| CN111380354A (en) * | 2020-04-14 | 2020-07-07 | 磐石自动化系统（深圳）有限公司 | Dryer tail gas circulation system |
| CN111380354B (en) * | 2020-04-14 | 2023-10-27 | 磐石自动化系统（深圳）有限公司 | Tail gas circulation system of dryer |
| CN112939409A (en) * | 2021-02-01 | 2021-06-11 | 科蓝博(北京)环境技术有限公司 | Sludge heat drying system |
| CN113251786A (en) * | 2021-05-27 | 2021-08-13 | 四川华景智农农业开发有限责任公司 | Integrated superconductor multipurpose device and use method |
| CN113248107A (en) * | 2021-06-15 | 2021-08-13 | 山东高洁环保科技有限公司 | High-efficient sludge treatment equipment |
| CN113248107B (en) * | 2021-06-15 | 2021-09-24 | 山东高洁环保科技有限公司 | High-efficient sludge treatment equipment |
| CN113754235A (en) * | 2021-09-26 | 2021-12-07 | 陕西延长中煤榆林能源化工有限公司 | Chemical waste residue and sludge drying device |
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