CN107245435B - Device and method for producing methane through pyrolysis-biochemical coupling of organic solid wastes difficult to biochemically produce - Google Patents
Device and method for producing methane through pyrolysis-biochemical coupling of organic solid wastes difficult to biochemically produce Download PDFInfo
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000002910 solid waste Substances 0.000 title claims abstract description 40
- 230000008878 coupling Effects 0.000 title claims description 9
- 238000010168 coupling process Methods 0.000 title claims description 9
- 238000005859 coupling reaction Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title description 6
- 238000000197 pyrolysis Methods 0.000 claims abstract description 74
- 239000007789 gas Substances 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000007233 catalytic pyrolysis Methods 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 11
- 239000001257 hydrogen Substances 0.000 claims abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 244000005700 microbiome Species 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 235000015097 nutrients Nutrition 0.000 claims description 3
- 239000010801 sewage sludge Substances 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 3
- 229920002521 macromolecule Polymers 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 230000000696 methanogenic effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 230000035764 nutrition Effects 0.000 abstract 1
- 235000016709 nutrition Nutrition 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000013502 plastic waste Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000002306 biochemical method Methods 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/16—Solid state fermenters, e.g. for koji production
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- C12M45/00—Means for pre-treatment of biological substances
- C12M45/20—Heating; Cooling
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- 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
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Abstract
The device consists of a continuous feeding device, a medium-temperature pyrolysis chamber, a high-temperature catalytic pyrolysis chamber, a biochar storage tank, a gas-liquid separation and cooling device, a biological methane reactor, a control system and the like; the method comprises the steps of converting organic solid waste difficult to biochemistry into pyrolysis mixed gas mainly comprising hydrogen and carbon monoxide and biochar in a medium-high temperature catalytic two-chamber pyrolysis furnace, externally discharging and storing the biochar through jacket type cooling, respectively introducing non-condensable gas and pyrolysis water containing water-soluble organic matters after separation and cooling into a biological methane-producing reactor, converting the non-condensable gas into methane-rich gas in the biological methane-producing reactor, and providing nutrition for microorganisms by the pyrolysis water and improving methane yield, so that the conversion of the organic solid waste difficult to biochemistry into methane is realized for high-quality clean resource utilization.
Description
Technical Field
The invention belongs to the technical field of solid waste energy conversion containing organic matters, and particularly relates to a device and a method for producing methane by pyrolysis-biochemical coupling of organic solid waste difficult to biochemically produce.
Background
The recycling of organic solid wastes rich in rich organic matters has become a development trend. The biochemical method route mainly comprising composting and anaerobic methane is one of the main technologies of organic solid waste recycling, and how to further treat and dispose the refractory biochemical oversize products or residues after biochemical treatment which are derived from the technology and mainly comprise plastic products and lignin substances is an important difficult problem; at present, the difficult biochemical organic solid waste mainly adopts landfill and incineration as main treatment and disposal technologies, so that the waste of organic resources and the environmental pollution are caused; in addition, the difficultly-biochemically-produced organic solid waste, especially the oversize product or the residue after biochemistry composed of the plastic waste and lignin, contains abundant C and H, is a raw material with better methane generation, converts the raw material into methane, solves the problem of resource utilization of the difficultly-biochemically-produced organic solid waste, reduces environmental pollution, simultaneously produces high-quality clean methane gas, improves economic benefit, and has important practical significance for treating the organic solid waste, especially the difficultly-biochemically-produced organic solid waste.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a device and a method for producing methane by pyrolysis-biochemical coupling of organic solid waste difficult to biochemically process, wherein the organic solid waste difficult to biochemically process is firstly introduced into a medium-temperature pyrolysis chamber through a closed continuous feeding device to be subjected to medium-temperature pyrolysis, materials are converted into volatile gases and biochar, the biochar is directly discharged from a greenhouse in a pyrolysis furnace to be cooled by a water cooling jacket storage tank, the volatile gases are directly introduced into a high-temperature pyrolysis catalytic chamber of the pyrolysis furnace to be further catalytically cracked into high-temperature pyrolysis mixed gas mainly comprising hydrogen and carbon monoxide, the high-temperature pyrolysis mixed gas is subjected to gas-liquid separation through a gas-liquid separation and a cooler, the generated non-condensable gases and pyrolysis water containing water-soluble organic matters are introduced into a biological methane production reactor respectively in different forms, and the hydrogen, the carbon monoxide and other gas components of the pyrolysis gas and the water-soluble organic matters in pyrolysis water are converted into methane through the action of microorganisms, so that the organic solid waste difficult to biochemically process is converted into methane to be used as high-quality clean resources.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an apparatus for producing methane by pyrolysis-biochemical coupling of difficult biochemical organic solid waste comprises:
A continuous feeding device 1;
a horizontal medium-temperature pyrolysis chamber 2 with a feed inlet connected with the continuous feeding device 1;
a biochar storage box 5 connected with the discharge port of the medium-temperature pyrolysis chamber 2;
the high-temperature catalytic pyrolysis chamber 3 is connected with an air outlet of the medium-temperature pyrolysis chamber 2;
a gas-liquid separation device 6 and a cooling device 7 which are connected with the exhaust port of the high-temperature catalytic pyrolysis chamber 3 in sequence;
and the biological methane-generating reactor 8 is connected with the exhaust port of the cooling device 7, the liquid outlet of the gas-liquid separation device 6 and the liquid outlet of the cooling device 7.
The continuous feeding device 1 is of a bidirectional closed structure, the feeding quantity is regulated and controlled through the frequency converter, the vertical arrangement is realized, the electric spiral feeding is realized, the water jacket cooling is realized in the vertical downward conveying section, the escape of water in the dry material caused by hot gas is prevented, the material is agglomerated and the feeding is blocked, and the sealing effect is also realized. The medium-temperature pyrolysis chamber 2 is horizontally arranged, the high-temperature catalytic pyrolysis chamber 3 is vertically arranged, the contact degree of the heating and pyrolysis gas and the catalyst is increased, and the occupied area is reduced.
The high-temperature catalytic pyrolysis chamber 3 is internally provided with a meshed bag 4 filled with a catalyst, so that the catalyst is easy to replace and can be regenerated at high temperature.
The biochar storage box 5 is of a water cooling jacket type structure, and a pipeline connected with the biochar storage box 5 and a discharge hole of the medium-temperature pyrolysis chamber 2 is of a water cooling jacket type structure, so that the spontaneous combustion of high-temperature biochar is avoided, and the performance of the biochar is reduced.
Before the gas generated by the high-temperature catalytic pyrolysis chamber 3 enters the biological methane reactor 8, the non-condensable gas and the condensable gas are separated and cooled to the proper temperature of microorganisms through the gas-liquid separation device 6 and the cooling device 7, and then are respectively introduced into the biological methane reactor 8 in different forms. The cooling device 7 may be a water cooling device.
The invention also provides a methanogenesis method based on the device for producing methane by pyrolysis-biochemical coupling of the difficult biochemical organic solid waste, which comprises the following steps:
a. Adding the organic solid waste materials difficult to biochemically treat into the continuous feeding device 1, ensuring that the continuous feeding device 1 is in an anaerobic state, conveying the materials downwards to the front section of the medium-temperature pyrolysis chamber 2 through a vertical screw, and conveying the materials forwards through a horizontal screw;
b. Controlling the temperature of the medium-temperature pyrolysis chamber 2 to be 300-600 ℃ by a temperature controller, controlling the stay time of materials in the medium-temperature pyrolysis chamber 2 to be 20-40min by controlling the horizontal spiral rotating speed, discharging the generated biological carbon by medium-temperature pyrolysis to enter a biological carbon storage box 5, and directly entering the generated volatile gas into a high-temperature catalytic pyrolysis chamber 3;
c. The temperature of the high-temperature catalytic pyrolysis chamber 3 is controlled to be 700-1000 ℃ by a temperature controller, so that the condensation gas containing macromolecules is converted into high-temperature pyrolysis mixed gas mainly containing non-condensation gas;
d. the mixed gas of the pyrolysis mainly comprising non-condensable gas sequentially passes through a gas-liquid separation device 6 and a cooling device 7, water vapor and small molecular organic matters are condensed into liquid to obtain pyrolysis water rich in water-soluble organic matters, the pyrolysis water enters a biological methane reactor 8, and the non-condensable gas enters the biological methane reactor 8 through a gas aerator;
e. The non-condensable gas is converted into methane-rich gas in the biological methane-producing reactor 8, and pyrolysis water rich in water-soluble organic matters provides nutrients for microorganisms, so that the methane yield is improved.
The refractory organic solid waste refers to oversize products before biochemical treatment or residues after biochemical treatment, and the organic solid waste refers to one or more of municipal waste, sewage sludge, agricultural and forestry waste and industrial organic solid waste.
The medium-temperature pyrolysis chamber 2 and the high-temperature catalytic pyrolysis chamber 3 are two temperature chambers of a pyrolysis furnace, solid materials react in the medium-temperature pyrolysis chamber 2 at 300-600 ℃, and volatile gases generated in the medium-temperature pyrolysis chamber 2 are generated in the following steps of
High temperature catalytic pyrolysis chamber 3 with the temperature of more than 700 ℃ is used for reaction.
The catalyst in the high-temperature catalytic pyrolysis chamber 3 is a composite catalyst which takes nickel base which is easy to generate hydrogen as a main body.
The non-condensable gas is mainly hydrogen and carbon monoxide.
Compared with the prior art, the invention converts the difficult-to-biochemistry organic solid waste into methane gas and biochar through a thermal treatment pyrolysis technology and a biological anaerobic technology, explores a technical route for recycling the difficult-to-biochemistry organic solid waste, in particular to the on-biochemical screen material or biochemical residues of the organic solid waste, realizes the clean treatment and the high-quality recycling of the difficult-to-biochemistry organic solid waste, and has important practical significance for recycling the difficult-to-biochemistry organic solid waste.
Drawings
FIG. 1 is a schematic diagram of the device for producing methane by pyrolysis-biochemical coupling of difficult biochemical organic solid wastes.
Detailed Description
The following detailed description of specific technical methods and apparatus of the present invention, taken in conjunction with the accompanying drawings and detailed description, illustrates by way of example only, and not by way of example all of the embodiments of the invention. All other examples, which are obtained without inventive effort by a person skilled in the art, are within the scope of the present invention.
As shown in figure 1, the device for producing methane by pyrolysis-biochemical coupling of difficult biochemical organic solid waste comprises a vertical two-way closed continuous feeding device 1, a medium-temperature pyrolysis chamber 2, a high-temperature catalytic pyrolysis chamber 3, a meshed bag 4 with a built-in catalyst, a biochar storage tank 5 with a water jacket cooling structure, a gas-liquid separation device 6, a cooling device 7, a biological methane production reactor 8 and the like.
The refractory solid waste material firstly passes through a continuous feeding device 1 which is arranged as a vertical bidirectional electric screw, and the feeding amount entering a medium-temperature pyrolysis chamber 2 is regulated and controlled by a frequency converter so as to realize the aim of closed continuous feeding. Then the solid material is subjected to anaerobic pyrolysis in a medium-temperature pyrolysis chamber 2 to generate biochar and pyrolysis gas mainly comprising condensable gas. The biochar is cooled to room temperature by a water cooling jacket and enters a storage tank 5, and the pyrolysis gas enters a high-temperature catalytic pyrolysis chamber 3 to be further converted into micromolecular pyrolysis mixed gas mainly comprising hydrogen and carbon monoxide. Finally, the generated pyrolysis mixed gas is separated, cooled and separated, and then respectively enters a biological methane-generating reactor 8, and the pyrolysis gas and water-soluble organic matters are converted into methane gas by a biological method.
The specific methanogenesis method comprises the following steps:
a. Organic solid waste materials are added into the continuous feeding device 1, so that the middle-temperature pyrolysis chamber 2 is kept in an anaerobic state, the materials are downwards conveyed to the front section of the middle-temperature pyrolysis chamber 2 through a vertical screw, and then are forwards conveyed through a horizontal screw, and the residence time of the materials in the middle-temperature pyrolysis chamber 2 is regulated and controlled through a frequency converter;
b. The materials in the step a enter a medium-temperature pyrolysis chamber 2, the temperature of the reactor is controlled to be 300-600 ℃ by a temperature controller, the residence time of the materials in the medium-temperature pyrolysis chamber is controlled to be 20-40min by controlling the spiral rotating speed, the generated biochar is discharged by medium-temperature pyrolysis, the biochar enters a storage box 5, and the generated volatile gas directly enters a high-temperature catalytic pyrolysis chamber 3;
c. the volatile gas in the step b enters a high-temperature catalytic pyrolysis chamber 3, the temperature is controlled to be 700-1000 ℃ by a temperature controller, and the macromolecular condensable gas is converted into a mixed gas mainly containing non-condensability such as hydrogen, carbon monoxide and the like;
d. Condensing water vapor and small molecular organic matters into liquid states by the high-temperature pyrolysis gas mainly comprising non-condensable gases generated in the step c through a gas-liquid separation device 6 and a cooling device 7 respectively;
e. The non-condensable gases such as hydrogen, carbon monoxide and the like generated in the step d enter a biological methane reactor 8 through a gas aerator and are converted into methane-enriched gas; meanwhile, pyrolysis water rich in water-soluble organic matters is also introduced into the biological methane-producing reactor 8, so that nutrients are provided for microorganisms, and the methane yield is improved.
In the invention, the organic solid waste difficult to biochemically refers to oversize materials before biochemistry of the organic solid waste or residues after biochemistry; the organic solid waste refers to one or more of municipal waste, sewage sludge, agricultural and forestry waste and industrial organic solid waste.
Taking biochemical screen materials or biochemical residues of kitchen waste as materials, adding materials consisting of plastic waste and lignin materials in a ratio of more than 1:7 into a continuous feeding device 1, controlling a greenhouse 2 in pyrolysis at about 500 ℃ for 30min, and delivering and storing biological carbon with a yield of about 25% through a water jacket screw device; the generated mixed pyrolysis gas with condensation and non-condensation is directly introduced into a high-temperature catalytic pyrolysis chamber 3, the selected catalyst is a Ni/molecular sieve composite catalyst, the temperature is controlled at about 900 ℃, the hydrogen and carbon monoxide in the generated mixed gas respectively account for more than 50% and 35%, the mixed pyrolysis gas and pyrolysis water pass through a biological methane-producing reactor 8 to generate gas with CH 4 as a main body, and CH 4 accounts for more than 60%.
Claims (7)
1. A difficult biochemical organic solid waste pyrolysis-biochemical coupling methanogenesis method is based on the device comprising:
A continuous feeding device (1);
A horizontal medium-temperature pyrolysis chamber (2) with a feed inlet connected with the continuous feeding device (1);
a biochar storage box (5) connected with the discharge port of the medium-temperature pyrolysis chamber (2);
The high-temperature catalytic pyrolysis chamber (3) is connected with the air outlet of the medium-temperature pyrolysis chamber (2);
a gas-liquid separation device (6) and a cooling device (7) which are connected with an exhaust port of the high-temperature catalytic pyrolysis chamber (3) in sequence;
And a biological methane-generating reactor (8) connected with the exhaust port of the cooling device (7), the liquid outlet of the gas-liquid separation device (6) and the liquid outlet of the cooling device (7);
The method is characterized by comprising the following steps of:
a. Adding refractory organic solid waste materials into a continuous feeding device (1), ensuring that the continuous feeding device (1) is in an anaerobic state, conveying the materials downwards to the front section of a medium-temperature pyrolysis chamber (2) through a vertical screw, and conveying the materials forwards through a horizontal screw;
b. Controlling the temperature of the medium-temperature pyrolysis chamber (2) to be 300-600 ℃ by a temperature controller, controlling the stay time of materials in the medium-temperature pyrolysis chamber (2) to be 20-40min by controlling the horizontal spiral rotating speed, discharging the generated biochar by medium-temperature pyrolysis to enter a biochar storage tank (5), and directly entering the generated volatile gas into a high-temperature catalytic pyrolysis chamber (3);
c. The temperature of the high-temperature catalytic pyrolysis chamber (3) is controlled to be 700-1000 ℃ by a temperature controller, so that the condensing gas containing macromolecules is converted into high-temperature pyrolysis mixed gas mainly containing non-condensing gas; the medium-temperature pyrolysis chamber (2) and the high-temperature catalytic pyrolysis chamber (3) are two temperature chambers of the pyrolysis furnace, solid materials react in the medium-temperature pyrolysis chamber (2), and volatile gases generated by the medium-temperature pyrolysis chamber (2) react in the high-temperature catalytic pyrolysis chamber (3);
d. The mixed gas of the pyrolysis mainly comprising non-condensable gas sequentially passes through a gas-liquid separation device (6) and a cooling device (7), water vapor and small molecular organic matters are condensed into liquid to obtain pyrolysis water rich in water-soluble organic matters, the pyrolysis water enters a biological methane reactor (8), and the non-condensable gas enters the biological methane reactor (8) through a gas aerator;
e. the non-condensable gas is converted into methane-rich gas in a biological methane-producing reactor (8), and pyrolysis water rich in water-soluble organic matters provides nutrients for microorganisms, so that the methane yield is improved.
2. The methanogenesis method according to claim 1, wherein the refractory organic solid waste is screen-top material before biochemical treatment or residue after biochemical treatment, and the organic solid waste is one or more of municipal waste, sewage sludge, agricultural and forestry waste, and industrial organic solid waste.
3. The methanogenesis method according to claim 1, characterized in that the catalyst in the high-temperature catalytic pyrolysis chamber (3) is a nickel-based composite catalyst.
4. The methanogenic process of claim 1, wherein the non-condensable gases are predominantly hydrogen and carbon monoxide.
5. The methanogenesis method according to claim 1, wherein the continuous feeding device (1) is of a bidirectional closed structure, is vertically arranged, is electrically driven to feed in a spiral manner, is vertically downwards conveyed to be cooled by a water jacket, and is controlled by a frequency converter, and the medium-temperature pyrolysis chamber (2) is horizontally arranged.
6. The methanogenesis method according to claim 1, characterized in that the high-temperature catalytic pyrolysis chamber (3) is built in with a mesh bag (4) containing catalyst.
7. The methanogenesis method according to claim 1, wherein the biochar storage tank (5) is of a water-cooled jacket type structure, and the pipes connected to the discharge ports of the biochar storage tank (5) and the medium-temperature pyrolysis chamber (2) are also of a water-cooled jacket type structure.
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| CN113172079A (en) * | 2021-05-08 | 2021-07-27 | 南开大学 | Urban and rural organic solid waste rapid heat treatment device and application |
| CN115340882B (en) * | 2021-05-15 | 2024-04-19 | 陕西青朗万城环保科技有限公司 | Method for generating gas based on microwave pyrolysis and control system thereof |
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| US8383871B1 (en) * | 2010-09-03 | 2013-02-26 | Brian G. Sellars | Method of hydrogasification of biomass to methane with low depositable tars |
| CN104388105A (en) * | 2014-11-06 | 2015-03-04 | 清华大学 | Device and method for producing synthetic gas by continuous two-stage catalytic pyrolysis |
| CN104861995A (en) * | 2015-04-29 | 2015-08-26 | 农业部规划设计研究院 | Variable cascade temperature regulation biomass charring device |
| CN105602999A (en) * | 2015-11-13 | 2016-05-25 | 中国石油大学(北京) | System and method used for producing high-quality biological methane gas from biomass |
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