CN113322110A - Device and method for preparing fuel and humic acid liquid by treating waste vegetable leaves with hydrothermal method - Google Patents
Device and method for preparing fuel and humic acid liquid by treating waste vegetable leaves with hydrothermal method Download PDFInfo
- Publication number
- CN113322110A CN113322110A CN202110373241.0A CN202110373241A CN113322110A CN 113322110 A CN113322110 A CN 113322110A CN 202110373241 A CN202110373241 A CN 202110373241A CN 113322110 A CN113322110 A CN 113322110A
- Authority
- CN
- China
- Prior art keywords
- fuel
- hydrothermal
- liquid
- product
- humic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
- C05F11/02—Other organic fertilisers from peat, brown coal, and similar vegetable deposits
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
- C10L5/36—Shape
- C10L5/363—Pellets or granulates
-
- 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
-
- 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
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a device and a method for preparing fuel by treating waste vegetable leaves by a hydrothermal method, wherein the crushed waste vegetable leaves are weighed, a 1-2% urea solution is uniformly mixed with the waste vegetable leaves, and the solid-liquid ratio is 1: 10; in a liquid; carrying out hydrothermal reaction for 15-30min at the temperature of 160-220 ℃, the pressure of 0.6-2.3MPa and under a sealed condition; cooling the product obtained by the hydrothermal reaction, and carrying out solid-liquid separation on the product to obtain a solid product serving as fuel and a liquid product serving as humic acid liquid; compression molding is carried out on the solid product after the hydrothermal reaction by a biomass fuel molding machine to obtain a molded biomass fuel for boiler fuel, and a molded carbon fuel with higher quality can be obtained by pyrolysis; processing the liquid product after the hydrothermal reaction to prepare a humic acid water-soluble fertilizer; the molded biomass fuel and the molded carbon fuel prepared by the process have high heat productivity and high burnout rate, do not need to additionally add a binder, and have simple process, relatively mild reaction conditions and low operation cost in the whole process.
Description
Technical Field
The invention belongs to the field of biomass recycling and the technical field of fuel utilization, and particularly relates to a device and a method for preparing fuel and humic acid liquid by utilizing waste vegetable leaves.
Background
The energy is the basic support of the national people, is directly related to the survival of human beings, and is related to the stable development of the country and the society. To alleviate the dual pressures of energy and environment, new renewable resources are actively being developed in various countries of the world. Therefore, there is an urgent need for a clean fuel to replace the traditional fossil fuel, and satisfy the great demand of human for energy.
With the continuous expansion of the production scale of vegetables, a large amount of waste vegetable leaves are randomly accumulated on the sides of highways, the sides of country roads and the fields without restriction. Generally, people feed livestock with a small amount of waste vegetable leaves; a large amount of waste vegetable leaves are piled up because of unmanned recycling, so that the waste is wasted, the environment is polluted, and the rotten and deteriorated vegetable leaves seriously pollute the environment and even spread diseases; in an environment-friendly city, waste vegetable leaves are transported to a garbage disposal plant every day to be treated as garbage, so that huge waste of resources, manpower and material resources is caused. How to carry out innocent treatment and effective utilization on the waste vegetable leaves and reduce pollution in rural areas and cities becomes a key problem which is urgently needed to be solved in the current vegetable production.
The waste vegetable leaves belong to organic solid waste, and have serious hazards of complex components, easy decay, decomposition and odor, pathogenic bacteria generation, air and water source pollution and the like, so the waste vegetable leaves must be scientifically, safely and effectively treated, new pollution is not generated after treatment, and value can be generated through another way. At present, domestic waste vegetable leaves are low in treatment amount and efficiency or directly poured, so that the environment is polluted, and the ecological development is influenced.
On the other hand, in agricultural planting, the large amount and long-term use of chemical fertilizers causes lack of soil organic matters, imbalance of the proportion of nitrogen, phosphorus and potassium, and serious agricultural diseases and insect pests, and excessive use of chemical fertilizers not only causes large consumption of energy, but also causes soil environmental pollution, soil hardening, crop yield reduction and the like; therefore, the soil is improved, the micro-ecology is repaired, and the method has important significance for promoting the development of modern agriculture. The humic acid is used as a soil conditioner, and has obvious effects on promoting plant growth, preserving soil fertility, reducing heavy metal pollution of soil and the like. Therefore, the content of humic acid can be used as an important index for the subsequent processing of hydrothermal liquid into organic liquid fertilizer. At present, humic acid is mainly prepared by extracting from weathered coal, lignite, papermaking waste and brewing waste. Therefore, the research on a method for preparing fuel and humic acid liquid by treating waste vegetable leaves by a hydrothermal method is of great significance.
The invention discloses a method for producing humic acid and briquette fuel by hydrothermal carbonization of corn straws (publication No. CN 108753324A). The method comprises the steps of taking corn straws and water as raw materials, reacting in a hydrothermal reaction kettle, carrying out in-situ alkali extraction on the product, carrying out suction filtration after the reaction is finished to obtain a sodium humate solution and solid carbonized filter residues, acidifying and filtering the filtrate to obtain humic acid, or concentrating and drying the filtrate to obtain sodium humate, mixing the filter residues with pulverized coal, and forming to obtain the briquette fuel. In the process, the alkali added in the in-situ alkali extraction is solid sodium hydroxide, and a liquid product does not contain trace elements required by the fertilizer, so that the liquid product is not beneficial to processing and preparing the fertilizer. The solid product after reaction is mixed with pulverized coal in the forming process, so that the processing process is more complex, the quality of the obtained briquette fuel is lower, the briquette fuel cannot be used for commercial use, and the market competitiveness is lower.
The invention discloses a Chinese invention patent (publication number CN 105950251A) which discloses a garden garbage utilization method based on hydrothermal carbonization and a solid biomass fuel, wherein the garden garbage is subjected to hydrothermal treatment, and the obtained solid product and the garden garbage after crushing and drying are mixed according to the ratio of 3: 7, and compacting to prepare the solid forming biomass fuel. And extracting the liquid by-product by using dichloromethane and rotary evaporating to obtain light oil. According to the invention, the solid product after hydrothermal carbonization and the garden garbage after crushing and drying are directly mixed according to the ratio of 3: 7, the technical process is more complicated, the proportion of the raw materials in the compaction forming process is larger than that of the solid product after hydrothermal treatment, and no binder is added in the process, so that the mechanical strength and durability of the prepared formed biomass fuel are lower.
Disclosure of Invention
The invention aims to provide a device and a method for preparing fuel by treating waste vegetable leaves by a hydrothermal method, wherein the waste vegetable leaves refer to a large amount of waste vegetable leaves generated in the production process of vegetable production and processing enterprises, the hydrothermal method has the advantages of simple process, no need of high-temperature ignition and easily controlled reaction conditions, can solve the difficulty of high-moisture low-heat value of the waste vegetable leaves, and can obtain a liquid byproduct with a certain utilization value, thereby realizing the high-efficiency low-pollution energy utilization of the waste vegetable leaves.
The invention is realized by the following technical scheme: a method for preparing fuel and humic acid liquid by treating waste vegetable leaves through a hydrothermal method is characterized in that 1% -2% of urea solution and crushed waste vegetable leaves are uniformly mixed to obtain a solid-liquid mixture, wherein the solid-liquid ratio is 1: 10; carrying out hydrothermal reaction for 15-30min at the temperature of 160-220 ℃, the pressure of 0.6-2.3MPa and under a sealed condition; cooling the product obtained by the hydrothermal reaction, and carrying out solid-liquid separation on the product to obtain a solid product as biomass fuel and a liquid product as a raw material for preparing the humic acid water-soluble fertilizer; the hydrothermal reaction is carried out in a closed pressure container, and when a product obtained by the hydrothermal reaction is cooled, the product is naturally cooled to room temperature.
The crushed waste vegetable leaves are crushed in a crusher, and the particle size of the crushed waste vegetable leaves is 2-3 mm.
The closed pressure container is a reaction kettle.
And (3) taking carbonized filter residues after hydrothermal reaction as a raw material, directly pressurizing and forming to prepare the formed biomass fuel, and pyrolyzing the formed biomass fuel to obtain the formed carbon fuel.
The device for preparing the fuel and the humic acid liquid by treating the waste vegetable leaves by the hydrothermal method comprises a crusher, a storage box, a reactor and a filter which are sequentially arranged along the material flow direction; the inlet of the reactor is also communicated with a water pipe, and a biomass fuel forming machine is arranged at the downstream of the filter along the flow direction of the solid materials; an aqueous acid storage tank is disposed along the liquid material path downstream of the filter.
Along the material flow direction, the upper reaches of breaker still set up the feeder, and the discharge gate intercommunication breaker's of feeder material entry.
The reactor is a closed container, and the pressure resistance of the reactor is not lower than 3 MPa; the reactor is provided with a temperature transmitter, a pressure transmitter and a pH value monitor, and the reactor is also provided with an observation window.
The biomass fuel forming machine comprises a water drop type hammer head annular die and a double-end cutter, wherein the water drop type hammer head is positioned right above the annular die and reciprocates up and down, and the double-end cutter is positioned below the annular die and reciprocates left and right around the annular die; the extrusion holes are uniformly distributed along the circumferential direction of the ring die and are the same in size, the inlet section of each extrusion hole is cylindrical, and the cross section of the outlet section of each extrusion hole extending outwards is gradually reduced.
Compared with the prior art, the invention has the following advantages and effects: the raw materials of the invention are waste vegetable leaves, the source is wide, the cost is low, the process route is simple, and the invention has good industrial application prospect;
waste vegetable leaves can be utilized to a greater extent by hydrothermal treatment, solid products and liquid byproducts can be utilized, the resource utilization efficiency is improved, resource waste is avoided, secondary pollution is low, and pathogenic microorganisms are completely eliminated; the hydrothermal treatment technology can comprehensively improve the properties of the treated formed biomass fuel in various aspects such as combustion heat value, energy density, durability, mechanical strength and the like, and the waste vegetable leaves do not need to be dehydrated in advance;
urea is added as a chemical catalyst, a mild, low cost, low toxicity, low corrosion, and more easily handled reagent than ammonia, and can be easily dissolved in water and converted to ammonia. The lignin is a main component of the waste vegetable leaves, the urea is heated and decomposed at the temperature of over 160 ℃ to generate ammonia gas, the ammonia gas and the water are combined to form ammonia water, the lignin in the vegetable leaves can be effectively removed, the lignin is an important raw material for converting the lignin into humic acid, and meanwhile, the urea is added to enable a nitrogen element to be introduced into a system, so that the liquid product can be further processed into the fertilizer; the method can be used for preparing the molded biomass fuel and the molded carbon fuel with high mechanical strength, different carbonaceous products can be obtained according to market demands, the humic acid water-soluble fertilizer can also be obtained, the process scale can be properly adjusted according to biomass supply, the process is pollution-free, and the application value of the biomass is improved; the formed carbon fuel prepared by the method has high heat value, combustion performance, compressive strength and apparent density superior to those of commercial barbecue charcoal, ash content far lower than that of the commercial barbecue charcoal and European Union standards, fixed carbon higher than that of the European Union standards, and strong market competitiveness.
Furthermore, the density of the biomass fuel can be improved by adopting a compression molding technology, and the problems of loose arrangement of biomass particles, large gaps among particles and low density of the biomass fuel are solved. After hydrothermal reaction, the lignin is converted from solid state to glass state, so that local melting and mechanical interlocking are formed in the particles, and the effects of promoting forming and improving forming are achieved.
The equipment in the device for preparing the fuel and the humic acid liquid by treating the waste vegetable leaves by the hydrothermal method provided by the invention is electromechanical equipment, and the equipment is convenient to replace as long as the equipment is arranged and connected according to the flow direction of the materials without strict assembly relation, and the aim can be achieved by strictly controlling parameters based on the method provided by the invention.
Furthermore, the water drop hammer of the biomass fuel forming machine adopted by the invention does up-and-down reciprocating motion above the annular die, the hydrothermal solid product on the annular die is continuously compressed, and the solid product is extruded by the water drop hammer and then is forcibly extruded in a block shape from the hole of the annular die. The lower part of the small hole in the ring die is in an inverted cone shape, the pressure is gradually increased along with the continuous reduction of the sectional area in the hole, and the solid product is compressed again in the hole formed in the ring die, so that the forming of the solid product and the preparation of the formed biomass fuel with high mechanical strength are facilitated.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Fig. 2 is a schematic view of the biomass fuel forming machine of the present invention.
In the figure: 1 is a water drop type hammer head, 2 is a ring die, 3 is a double-end cutter, 4 is a raw material, and 5 is a formed biomass fuel.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are included to illustrate and not to limit the invention:
a method for preparing fuel and humic acid liquid by treating waste vegetable leaves through a hydrothermal method comprises the steps of taking the waste vegetable leaves as raw materials, crushing the collected waste vegetable leaves, weighing the crushed waste vegetable leaves, placing the crushed waste vegetable leaves into a hydrothermal reaction kettle, adding urea aqueous solution with the concentration of 1% -2% according to the required condition proportion into the reaction kettle, stirring, mixing, sealing, setting the hydrothermal temperature, and starting to heat. And (5) calculating the residence time when the reaction kettle reaches the set temperature. And cooling after the reaction is finished, opening the kettle cover when the reaction kettle reaches normal temperature and normal pressure, and filtering and washing the materials to respectively obtain a solid product and a liquid product. And conveying a solid product after hydrothermal reaction to the upper surface of a ring die in a biomass fuel forming machine, forcibly extruding the material in a block form from a hole of the ring die by up-and-down reciprocating extrusion of a water drop hammer head, simultaneously performing left-and-right reciprocating motion around the ring die by a double-head cutter below the ring die, cutting the fuel extruded from the hole of the ring die by the double-head cutter to obtain the formed biomass fuel which can be used as boiler fuel, and further performing pyrolysis to obtain commercial formed carbon fuel with higher quality. Processing the liquid product after the hydrothermal reaction to prepare a humic acid water-soluble fertilizer; the process flow is shown in the attached figure 1, urea is heated and decomposed into ammonia gas and cyanic acid at the temperature of above 160 ℃, the ammonia gas is very easy to dissolve in water to generate ammonia water, and the principle of the reaction process is as follows:
CO(NH2)2→NH3+HNCO
HNCO+H2O→NH3+CO2
NH3+H2O=NH3·H2O。
for a better understanding of the present invention, the following specific examples are provided to further illustrate the present invention and are not to be construed as limiting the present invention.
Example 1:
the method for preparing the fuel and the humic acid liquid by treating the waste vegetable leaves by the hydrothermal method is implemented by the following steps:
1, crushing 100kg of waste vegetable leaves by using a crusher, and putting the crushed waste vegetable leaves into a high-pressure reaction kettle, wherein the solid-to-liquid ratio is 1: 10, adding 10kg of urea and 990L of water in sequence, fully stirring, heating to 195 ℃, reacting at 195 ℃ under a hydrothermal condition for 25min under a reaction pressure of 1.4Mpa to obtain a hydrothermal carbonization product, taking out after the reaction is finished, and naturally cooling to room temperature.
2, filtering and separating the product, wherein the solid product after solid-liquid separation is the hydrothermal biomass fuel, and the liquid byproduct is a humic acid water-soluble fertilizer raw material;
3, conveying the obtained solid product to the upper surface of a ring die in a biomass fuel forming machine under the condition of not mixing any adhesive, forcibly extruding the material in a block form from a hole of the ring die by up-and-down reciprocating extrusion of a water drop type hammer head, simultaneously performing left-and-right reciprocating motion around the ring die by a double-head cutter below the ring die, and cutting the fuel extruded from the hole of the ring die by the double-head cutter to obtain the formed biomass with high mechanical strength and high heat value after compression forming, wherein the product can be used as biomass fuel for boiler combustion; the formed biomass is further pyrolyzed to prepare the formed biomass charcoal fuel with high mechanical strength, and different carbonaceous products can be obtained according to market demands.
Example 2:
this embodiment differs from example 1 in that: setting the hydrothermal reaction temperature in the step 1 to 160 ℃, and reacting under the hydrothermal condition of 160 ℃, wherein the reaction time is 30min, and the reaction pressure is about 0.6Mpa to obtain a hydrothermal carbonization product. The other processes were the same as in example 1.
Example 3:
this embodiment differs from example 1 in that: setting the hydrothermal reaction temperature in the step 1 to 220 ℃, and reacting under the hydrothermal condition of 220 ℃, wherein the reaction time is 15min, and the reaction pressure is about 2.3Mpa to obtain a hydrothermal carbonization product. The other processes were the same as in example 1.
The invention also changes the concentration of the urea solution for treatment on the basis of the embodiment 1, and adopts the urea solution with the ratio of 20kg of urea and 980L of water and the urea solution with the ratio of 15kg of water and 985L of water for treatment respectively with the same other process parameters as the embodiment.
A device for preparing fuel and humic acid liquid by treating waste vegetable leaves by a hydrothermal method comprises a crusher, a storage box, a reactor and a filter which are sequentially arranged along the material flow direction; the inlet of the reactor is also communicated with a water pipe, and a biomass fuel forming machine is arranged at the downstream of the filter along the flow direction of the solid materials; an acid water solution storage tank is arranged at the downstream of the filter along the path of the liquid material;
a feeding machine is further arranged at the upstream of the crusher along the material flow direction, and a discharge port of the feeding machine is communicated with a material inlet of the crusher; the reactor is a closed container, and the pressure resistance of the reactor is not lower than 3 MPa; the reactor is internally provided with a temperature transmitter, a pressure transmitter and a pH value monitor.
The feeding machine is preferably a belt conveyor,
pressing the biomass fuel subjected to the hydrothermal reaction into a block by using a pressure forming machine to obtain a well-formed biomass fuel block, wherein the biomass fuel forming machine comprises a water drop type hammer head 1, a ring die 2 and a double-end cutter 3, the water drop type hammer head 1 is positioned right above the ring die 2 and reciprocates up and down, and the double-end cutter 3 is positioned below the ring die 2 and reciprocates left and right around the ring die 2; the ring die 2 is internally provided with uniformly distributed holes with the same size, the upper part of each hole is cylindrical, and the lower part of each hole is inverted conical.
The ring die 2 continuously rotates, and when the forming size of a certain biomass fuel in the ring die 2 reaches a set value, the double-end cutter can reciprocate to cut off the biomass fuel.
Of course, the biomass fuel forming machine of the invention can also adopt a commercial biomass fuel forming machine.
While the invention has been described with respect to specific embodiments thereof, it will be understood by those skilled in the art that various other changes, modifications, substitutions, combinations and omissions may be made in the form and detail thereof without departing from the spirit and principles of the invention and are intended to be covered by the appended claims.
Claims (8)
1. A method for preparing fuel and humic acid liquid by treating waste vegetable leaves by a hydrothermal method is characterized by comprising the following steps:
uniformly mixing a urea solution with the concentration of 1% -2% with crushed waste vegetable leaves to obtain a solid-liquid mixture, wherein the solid-liquid ratio is 1: 10; carrying out hydrothermal reaction for 15-30min at the temperature of 160-220 ℃, the pressure of 0.6-2.3MPa and under a sealed condition; cooling the product obtained by the hydrothermal reaction, and carrying out solid-liquid separation on the product to obtain a solid product as biomass fuel and a liquid product as a raw material for preparing the humic acid water-soluble fertilizer; the hydrothermal reaction is carried out in a closed pressure container; and naturally cooling the product obtained by the hydrothermal reaction to room temperature when the product is cooled.
2. The hydrothermal process of claim 1, wherein the hydrothermal process comprises treating waste leaves of the vegetable to produce a fuel and a humic acid liquid, and the process comprises: the crushed waste vegetable leaves are crushed in a crusher, and the particle size of the crushed waste vegetable leaves is 2-3 mm.
3. The hydrothermal process of claim 1, wherein the hydrothermal process comprises treating waste leaves of the vegetable to produce a fuel and a humic acid liquid, and the process comprises: the closed pressure container is a reaction kettle.
4. The hydrothermal process of claim 1, wherein the hydrothermal process comprises treating waste leaves of the vegetable to produce a fuel and a humic acid liquid, and the process comprises: and (3) taking carbonized filter residues after hydrothermal reaction as a raw material, directly pressurizing and forming to prepare the formed biomass fuel, and pyrolyzing the formed biomass fuel to obtain the formed carbon fuel.
5. An apparatus for implementing the method of any one of claims 1-4, characterized in that: comprises a crusher, a storage box, a reactor and a filter which are arranged in sequence along the material flow direction; the inlet of the reactor is also communicated with a water pipe, and a biomass fuel forming machine is arranged at the downstream of the filter along the flow direction of the solid materials; an aqueous acid storage tank is disposed along the liquid material path downstream of the filter.
6. The apparatus of claim 5, wherein: along the material flow direction, the upper reaches of breaker still set up the feeder, and the discharge gate intercommunication breaker's of feeder material entry.
7. The apparatus of claim 5, wherein: the reactor is a closed container, and the pressure resistance of the reactor is not lower than 3 MPa; the reactor is provided with a temperature transmitter, a pressure transmitter and a pH value monitor, and the reactor is also provided with an observation window.
8. The apparatus of claim 5, wherein: the biomass fuel forming machine comprises a water drop type hammer head (1), a ring die (2) and a double-end cutter (3), wherein the water drop type hammer head (1) is positioned right above the ring die (2) and reciprocates up and down, and the double-end cutter (3) is positioned below the ring die (2) and reciprocates left and right around the ring die (2); the extrusion holes are uniformly distributed along the circumferential direction of the ring die (2) and have the same size, the inlet section of each extrusion hole is cylindrical, and the cross section of the outlet section of each extrusion hole extending outwards is gradually reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110373241.0A CN113322110A (en) | 2021-04-07 | 2021-04-07 | Device and method for preparing fuel and humic acid liquid by treating waste vegetable leaves with hydrothermal method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110373241.0A CN113322110A (en) | 2021-04-07 | 2021-04-07 | Device and method for preparing fuel and humic acid liquid by treating waste vegetable leaves with hydrothermal method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113322110A true CN113322110A (en) | 2021-08-31 |
Family
ID=77414585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110373241.0A Pending CN113322110A (en) | 2021-04-07 | 2021-04-07 | Device and method for preparing fuel and humic acid liquid by treating waste vegetable leaves with hydrothermal method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113322110A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114431106A (en) * | 2022-02-15 | 2022-05-06 | 东北农业大学 | Construction method of acid rice seedling raising soil rich in artificial humus |
| CN114752424A (en) * | 2022-04-18 | 2022-07-15 | 南京师范大学 | Two-stage type municipal sludge and waste wood chip synergistic resource utilization method |
| CN115196998A (en) * | 2022-07-19 | 2022-10-18 | 东华大学 | Method for enhancing hydrothermal humification of cellulose waste biomass |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170029733A1 (en) * | 2013-03-15 | 2017-02-02 | Gas Technology Institute | Hydrothermally carbonized biomass formed via reactive twin-screw extrusion |
| CN108753324A (en) * | 2017-11-07 | 2018-11-06 | 黑龙江科技大学 | A kind of method of the production of hydrothermal carbonization maize straw humic acid and type briquette fuel |
| CN111234888A (en) * | 2020-03-11 | 2020-06-05 | 西安交通大学 | System and method for recycling supercritical water reaction product and wet biomass |
| CN111253960A (en) * | 2020-02-13 | 2020-06-09 | 山东大学 | Straw biochar and low-temperature preparation method thereof |
-
2021
- 2021-04-07 CN CN202110373241.0A patent/CN113322110A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170029733A1 (en) * | 2013-03-15 | 2017-02-02 | Gas Technology Institute | Hydrothermally carbonized biomass formed via reactive twin-screw extrusion |
| CN108753324A (en) * | 2017-11-07 | 2018-11-06 | 黑龙江科技大学 | A kind of method of the production of hydrothermal carbonization maize straw humic acid and type briquette fuel |
| CN111253960A (en) * | 2020-02-13 | 2020-06-09 | 山东大学 | Straw biochar and low-temperature preparation method thereof |
| CN111234888A (en) * | 2020-03-11 | 2020-06-05 | 西安交通大学 | System and method for recycling supercritical water reaction product and wet biomass |
Non-Patent Citations (2)
| Title |
|---|
| 周志华主编: "《城镇建筑低碳新能源供应技术及应用》", 30 November 2019, 天津：天津大学出版社 * |
| 王隽哲等: "碱催化下厨余垃圾中白菜叶的水热转化", 《环境工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114431106A (en) * | 2022-02-15 | 2022-05-06 | 东北农业大学 | Construction method of acid rice seedling raising soil rich in artificial humus |
| CN114752424A (en) * | 2022-04-18 | 2022-07-15 | 南京师范大学 | Two-stage type municipal sludge and waste wood chip synergistic resource utilization method |
| CN115196998A (en) * | 2022-07-19 | 2022-10-18 | 东华大学 | Method for enhancing hydrothermal humification of cellulose waste biomass |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110240386B (en) | Straw and sludge cooperative treatment device and method | |
| CN107541224B (en) | A kind of biomass continuously carbonizing treatment process | |
| CN113322110A (en) | Device and method for preparing fuel and humic acid liquid by treating waste vegetable leaves with hydrothermal method | |
| CN101890423B (en) | Recycling method for cleaning and processing kitchen waste | |
| CN101612630B (en) | Harmless and recycling real-time treatment method and system for household garbage | |
| CN108059160B (en) | Bamboo charcoal production method and carbonization device used by same | |
| CN105665410A (en) | Household garbage fine separation and complete recycling comprehensive treatment process | |
| CN201389544Y (en) | Disposal system for comprehensive resourceful disposal of municipal solid waste | |
| CN101637778A (en) | Comprehensive processing technology of organic wastes | |
| CN101314163A (en) | Reclamation processing method for poor garbage | |
| CN1274427C (en) | Life refuse treating process | |
| CN202199577U (en) | Novel treatment device for changing house garbage to energy sources | |
| CN105368520A (en) | Preparing method for biomass formed granular fuel | |
| CN210419701U (en) | Straw and sludge coprocessing device | |
| CN110560453A (en) | kitchen waste-based method for biotransformation treatment of hermetia illucens | |
| CN113617792B (en) | Method for treating kitchen garbage by hydrothermal carbonization technology | |
| CN110639931A (en) | Process for coupling kitchen waste and biomass to coproduce oil, electricity, steam and carbon | |
| CN100484648C (en) | Household gabbage chemical stability treatment method | |
| CN210367550U (en) | Movable microwave-assisted pyrolysis system for solid waste | |
| CN102199435B (en) | Method for preparing guaiacol-enriched biological oil by catalytic pyrolysis of biomass | |
| CN213559105U (en) | Urban organic waste cooperative recycling treatment system | |
| CN114479976B (en) | Continuous hydrothermal carbonization method | |
| CN103341483A (en) | High temperature and high pressure steam dehydration system and method for household garbage | |
| CN114308981B (en) | Multi-generation comprehensive utilization system and treatment process for treating wet garbage by supercritical water | |
| CN109332349A (en) | A kind of intelligent garbage classification, recycling treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210831 |
|
| RJ01 | Rejection of invention patent application after publication |