CN202322831U - Methane and landfill gas utilization system - Google Patents
Methane and landfill gas utilization system Download PDFInfo
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- CN202322831U CN202322831U CN2011204708232U CN201120470823U CN202322831U CN 202322831 U CN202322831 U CN 202322831U CN 2011204708232 U CN2011204708232 U CN 2011204708232U CN 201120470823 U CN201120470823 U CN 201120470823U CN 202322831 U CN202322831 U CN 202322831U
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- 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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- 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
- B01D53/22—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 diffusion
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
- C12M47/10—Separation or concentration of fermentation products
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
- C12M47/18—Gas cleaning, e.g. scrubbers; Separation of different gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/05—Biogas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/59—Biological synthesis; Biological purification
Abstract
The utility model discloses a methane and landfill gas comprehensive utilization system, which comprises a gas generator, a gas purification system and an energy comprehensive utilization system, wherein the gas generator is used for generating fermentation gas by using waste; the gas purification system and the energy comprehensive utilization system are based on a gas separation membrane component; the gas separation membrane component is communicated with the gas generator and is used for separating the fermentation gas from the gas generator into a first gas product and a second gas product; a main ingredient of the first gas product is methane; and a main ingredient of the second gas product is carbon dioxide. According to user requirements, the modes of carbon dioxide liquefaction, catalytic combustion and the like can be reutilized, the recovery rate of the first gas product and the utilization efficiency of system energy are improved; and thus, the first gas product with high methane content can be obtained, and the application value of large-scale methane is favorably improved.
Description
Technical field
The utility model relates to a kind of biogas and refuse embedded gas utilizes system.
Background technology
Climate warming, energy dilemma impel various countries more to pay close attention to the utilization and the development of renewable energy source, and biogas is undoubtedly a kind of good renewable energy source.Biogas is the mixed gas that produces in a kind of bio anaerobic fermenting process, and wherein methane accounts for 50-70%, and carbonic acid gas accounts for 30-40%, also has compositions such as small amount of nitrogen, hydrogen, carbon monoxide, hydrogen sulfide, oxygen in addition.Content according to methane in the biogas is different, and calorific value is at 18-25MJ/Nm
3Between.China has the biogas utilization of last 100 years historical, but all is confined in the solution of the point source energy such as rural area, urban night soil, organic sewage processing and environmental problem, because of safety, carry economy, CH
4Problems such as content the is low extensive utilization as Sweet natural gas of failing.Electricity generation grid-connecting is that the main energy sources of European biogas is utilized mode, does not have economy but be incorporated into the power networks in China's marsh gas power generation, and therefore seeking the high biogas utilization mode of income is one of key issue that solves the biogas large-scale promotion application.Along with the development of energy prices rise and gas sweetening stripping technique, marsh gas purifying becomes Sweet natural gas paid attention to by society, and some technology that are used for the Sweet natural gas decarburization begin to use in the biogas industry gradually, like high-pressure washing, transformation absorption, amine absorption process etc.These technology have solved marsh gas purifying and have become the method problem of Sweet natural gas, but all have problems such as high like cost of investment, that energy consumption is high, maintenance cost is high, complex management, turndown ratio are little.
In addition, the domestic waste generation increased year by year, according to China Statistical Yearbook report in 2010; By the end of the year 2009; The National urban domestic refuse amount of clearing reaches 1.57 hundred million t, totally 567 of all kinds of household garbage fields, and wherein sanitary filling field is 447; Processing power is 27.35 ten thousand t/d, day about 8898.6 ten thousand t of landfill disposal amount.Domestic refuse is fallen the oxygen of landfill layer through the action of microorganisms slow consumption in the landfill process, get into the anaerobic digestion stage from the aerobic compost stage, and producing with methane (40-60%) and carbonic acid gas (about 40%) is the landfill gas of principal constituent.Domestic refuse per ton approximately can produce 60-400 side's landfill gas.Methane and carbonic acid gas all are greenhouse gases, and the Greenhouse effect that methane produces are more than 20 times of carbonic acid gas.Therefore " the design amount of landfill surpasses the 20m household refuse landfill sites greater than 2,500,000 tons and garbage loading embeading thickness to 5.15 regulations of country's " household refuse landfill sites pollutes control criterion (GB16889-2008) ", should build methane and utilize facility or torch burning facility to handle to contain the methane landfill gas.Less than the household refuse landfill sites of above-mentioned scale, should adopt the landfill process that can effectively reduce methane generation and discharging or adopt the torch burning facility to handle to contain the methane landfill gas." calorific value of landfill gas is at 8-23MJ/Nm
3, mainly carry out resource recycling at present through burning disposal and generating online, the income that obtains is less.Along with the international petroleum price increase, domestic gas price is climbing up and up, and according to progressively reaching 0.75 times of gas price with calorific value principle Sweet natural gas, therefore domestic Gas Prices can further go up according to national policy.And it is remarkable to compare effects of energy saving and emission reduction with calorific value Sweet natural gas and coal, so the developing of unconventional gas source can further remedy the demand of society to Sweet natural gas.Bulky refuse landfill yard day amount of landfill is more than 500 tons, and can produce 5-10 ten thousand m average according to a preliminary estimate every day
3Landfill gas produces 3-6 ten thousand m after methane and the carbon dioxide separation
3Bio-natural gas and about 2-4 ten thousand m
3High-quality dioxide gas, bio-natural gas supply line or compressed natural gas station, carbonic acid gas is sold as gas fertilizer or Chemicals, and income is much larger than burning and generating.
Utilize gas delivery and synthetic technology to improve the quality of landfill gas, make it to be cleaned into bio-natural gas or Chemicals, be used for driving automobile and done a lot of researchs and exemplary engineering both at home and abroad.Main purification techniques comprises pressure swing adsorption process, amine absorption process, high-pressure washing method etc. at present.
One Chinese patent application No.CN101884871A discloses a kind of purifying carbon dioxide and the isolating apparatus and method for of fire damp; The principle of transformation absorption is under pressure, to drive carbonic acid gas on the honeycomb filler, to be adsorbed, and filler is the gac of process modification and the zeolite of modification; Methane is not adsorbed; Obtain comparatively purified methane gas, utilize negative pressure of vacuum suction carbonic acid gas desorption again, reproducing adsorbent.This method mainly is to see the absorption property ratio of sorbent material to carbonic acid gas and methane, the multitower operate continuously, and facility investment is bigger, and valve is frequently closed and is opened, and maintenance cost is high, and the recovery of methane is generally not high.
One Chinese patent application No.CN102086417A discloses a kind of marsh gas purifying and has reclaimed the process method of elemental sulfur and carbonic acid gas; Through the gas-water separation dehydration, compressor boosts biogas, utilizes organic amine as absorption liquid absorbing carbon dioxide and hydrogen sulfide earlier; Methane obtains purifying, and makes vehicle fuel; Absorption liquid desorb after heat regeneration obtains carbonic acid gas and hydrogen sulfide, and the reheat mixed gas utilizes the desulfurization of Clinsulf technology, reclaims elemental sulfur; Carbonic acid gas pressurizes again, and cooling obtains Liquid carbon dioxide.It is higher that power consumption is cooled off, heats, compressed to this method repeatedly, and equipment is comparatively complicated, invest bigger, the working cost height.
One Chinese patent application No.CN102101001A discloses the Apparatus and method for that a kind of water-soluble solution removes carbonic acid gas and hydrogen sulfide in the biogas; Utilize carbonic acid gas and the hydrogen sulfide solubleness in water to be higher than the principle of the solubleness of methane in water; Under 0.8-1.2Mpa; Absorb, obtain methane; Decompression regeneration, air stripping, water reusable edible.This method is fairly simple, and the methane yield is higher, is easy to engineering construction, but the hydrogen sulfide in the regenerative process does not obtain processing, is prone to cause secondary pollution.
One Chinese patent application No.CN101659889A discloses a kind of marsh gas purifying comprehensive utilization technique, and biogas adopts calcium hydroxide aqueous solution as absorption liquid after dedusting; Chemical absorption hydrogen sulfide and dioxide gas, biogas is purified, and deposition is again through dehydration, drying; Sell as Chemicals packing back, and this method needs the calcium hydroxide of higher degree, is prone to cause that the absorption tower is stopped up, running cost is higher; Contain partial vulcanization calcium in the lime carbonate, influence quality product, income is bad.
One Chinese patent application No.CN101428190A discloses a kind of biogas purification method and system thereof, under the pressure that is lower than the methane hydrate generation, makes carbonic acid gas and hydrogen sulfide generate hydrate pressure-controlling, and methane obtains separating.Through decompression and intensification, obtain carbonic acid gas and hydrogen sulfide respectively again.This method is fairly simple, but refrigeration, compression energy consumption are higher, and working cost is high.
One Chinese patent application No.CN101108988B discloses a kind of biogas cleaning equipment and purification process thereof; Technology is that the various kinds of amine of main solute is that the aqueous solution of acvator is absorption liquid with MDEA; Adopt heat regeneration absorption liquid, methane recovery＞96% contains H in the purified gas
2S＜5mg/m
3This method purified gas purity is higher, but adopts normal pressure to absorb, and equipment volume is bigger, invest higherly, and adopts heat regeneration to consume energy higher.
One Chinese patent application No.CN102101002A discloses a kind of system of based thin film and the method for carbon dioxide separation, utilizes the zinc hydroxide part of polymer organic film support, and each zinc hydroxide partly is in the tetrahedral coordination attitude, with CO
2Reaction makes CO
2Can see through.
One Chinese patent application No.CN101130487B discloses a kind of method by refuse embedded gas system liquefied dimethyl ether, under HTHP, generates synthetic gas through the landfill gas after the desulfurization, again through catalyzed reaction dimethyl ether synthesis, methyl alcohol, CO
2And water,, cooling liquid obtains the product liquid dme after separating again.This method cost of investment is higher, working cost is higher, and the nitrogen in the landfill gas, oxygen etc. influence the synthetic gas quality.
One Chinese patent application No.CN1219605C discloses a kind of refuse embedded gas recycling suite of equipment; Refuse embedded gas is through the filter dehydration charcoal absorption, supplies pipe natural gas or is used for generating and other purposes after utilizing sodium hydroxide to remove carbonic acid gas as absorption agent.This method has reduced the discharging of greenhouse gases, but utilizes sodium hydroxide higher as the absorption agent expense, can't regenerate, and oxygen wherein, nitrogen can't be deviate from, and gas electricity generator need not promptly to can be used for generating through the decarburization purification.
One Chinese patent application No.CN100374792C discloses a kind of suite of equipment that utilizes refuse embedded gas to produce hot water, and refuse embedded gas directly burns through steam boiler, obtains hot water through plate-type heat exchanger.This method is simple, investment is low, but refuse landfill is away from the urban district, and landfill gas tolerance is bigger, and utilizing of hot water is limited, can't make full use of the value of landfill gas.
One Chinese patent application No.CN1279006C discloses a kind of method that reclaims methane that from refuse embedded gas, purifies; Through compression, desulfurization, freezing separatory, it is the methane product gas of 80-90%, yield 80-95% that alternating temperature absorption (TSA) and transformation absorption (PSA) operation obtain purity with refuse embedded gas.The methane yield of this method is lower.
One Chinese patent application No.CN1274648C discloses a kind of method and equipment thereof of from garbage loading embeading gas, producing methane; Refuse embedded gas is through compression, lyophilize, cascade filtration; At the pretreatment technology that carries out adsorption dry; Carry out high pressure absorption again, co-current and pressure equalization, the cycle production process of normal pressure regenerated transformation absorption.This method is purification process commonly used, and product gas again can be directly as compressed natural gas used as vehicle fuel (CNG) through compression, but CO
2Not as the utilization of resources, and the yield of methane is not high.
One Chinese patent application No.CN101219919B discloses a kind of method that reclaims methane that from refuse embedded gas, purifies, and refuse embedded gas can be removed to 20mg/m with the total sulfur in the refuse embedded gas through overdraft desulfurization, transformation absorption, deoxidation, temperature swing adsorption process
3, O
2＜0.2%, H
2S＜3ppm, all the other trace impurities are removed to below the 50ppm, and dew point＜-40 ℃ purify back gases methane purity 90%-95%, and the recovery reaches 90%, can be directly as being fuel for motor vehicle confession user use.This method operation cost is higher.
One Chinese patent application No.CN101108988B discloses a kind of biogas cleaning equipment and purification process thereof; Technology is that the various kinds of amine of main solute is that the aqueous solution of acvator is absorption liquid with MDEA; Adopt heat regeneration absorption liquid, methane recovery＞96% contains H in the purified gas
2S＜5mg/m
3This method purified gas purity is higher, but adopts normal pressure to absorb, and equipment volume is bigger, invest higherly, and adopts heat regeneration to consume energy higher.
The utility model content
A purpose of the utility model provides a kind of utilization system that is beneficial to extensive biogas and refuse embedded gas application.
According to an aspect of the utility model, a kind of biogas utilization system is provided, comprising: the producer gas generator that utilizes the generation of waste materials fermentation gas; With the gas separating film module, being communicated with and will separating into first gas products and the staple that staple is a methane from the fermentation gas of said producer gas generator with said producer gas generator is second gas products of carbonic acid gas.
According to a preferred embodiment of the utility model, said producer gas generator is a fermentor tank.
Another preferred embodiment according to the utility model also comprises: the biogas cabinet, be communicated with said fermentor tank, and be used to store fermentation gas from said fermentor tank; First compressor is communicated with said biogas cabinet, is used to compress the fermentation gas from said biogas cabinet; And strainer, its inlet is communicated with said first compressor, and outlet is communicated with the inlet of said gas delivery membrane module, is used for filtering out solid particulate and the moisture from the fermentation gas of said first compressor.
According to another preferred embodiment of the utility model, a side of generation first gas products of said gas delivery membrane module is connected with gas ductwork, and being used for to gas ductwork supply staple is first gas products of methane.
Another preferred embodiment according to the utility model also comprises: dehydration equipment, be communicated with a side of generation first gas products of said gas delivery membrane module, and be used for removing the moisture of first gas products; With second compressor, be communicated with said dehydration equipment, be used to compress first gas products, thereby obtain compressed natural gas used as vehicle fuel from said dehydration equipment.
Another preferred embodiment according to the utility model also comprises: sweetener, be communicated with a side of generation second gas products of said gas delivery membrane module, and be used for removing the sulfur-bearing thing of second gas products; The 3rd compressor is communicated with said sweetener, is used to compress second gas products from said sweetener; And cooling apparatus; Be communicated with said the 3rd compressor; Be used to cool off second gas products from said the 3rd compressor; Thereby the acquisition liquefied carbon dioxide gas, and the top of said cooling apparatus with transport pipeline connection from first gas products of said gas delivery membrane module, be used for second gas products be not cooled liquefaction gas phase partly be transported in first gas products.
Another preferred embodiment according to the utility model also comprises: catalyticcombustion equipment, be communicated with said sweetener, and second gas products from said sweetener is used to burn; With the hot water pump group, hot tie-in between said catalyticcombustion equipment and said fermentor tank is used for the heat that catalyticcombustion equipment produces is delivered to fermentor tank.
Another preferred embodiment according to the utility model also comprises: catalyticcombustion equipment, be communicated with said sweetener, and second gas products from said sweetener is used to burn; Gentle fertile application apparatus is communicated with said catalyticcombustion equipment, is used to receive the gas from after the burning of said catalyticcombustion equipment.
According to another preferred embodiment of the utility model, the fertile application apparatus of said gas is both culturing microalgae equipment or agricultural planting booth.
According to another preferred embodiment of the utility model, said producer gas generator is the refuse landfill gas trap.
According to another preferred embodiment of the utility model, said refuse landfill gas trap comprises: the gas collection pipes that is distributed in refuse landfill; And gas blower, be communicated with said gas collection pipes, utilize negative pressure to aspirate fermentation gas from gas collection pipes.
Another preferred embodiment according to the utility model also comprises: strainer, be communicated with said gas blower, and be used for filtering out solid particulate and moisture from the fermentation gas of said gas blower; With first compressor, its inlet is communicated with said strainer, and outlet is communicated with the inlet of said gas delivery membrane module, is used to compress the fermentation gas from said strainer.
According to another preferred embodiment of the utility model, a side of generation first gas products of said gas delivery membrane module is connected with gas ductwork, and being used for to gas ductwork supply staple is first gas products of methane.
Another preferred embodiment according to the utility model also comprises: dehydration equipment, be communicated with a side of generation first gas products of said gas delivery membrane module, and be used for removing the moisture of first gas products; With second compressor, be communicated with said dehydration equipment, be used to compress first gas products, thereby obtain compressed natural gas used as vehicle fuel from said dehydration equipment.
Another preferred embodiment according to the utility model also comprises: sweetener, be communicated with a side of generation second gas products of said gas delivery membrane module, and be used for removing the sulfur-bearing thing of second gas products; The 3rd compressor is communicated with said sweetener, is used to compress second gas products from said sweetener; And cooling apparatus; Be communicated with said the 3rd compressor; Be used to cool off second gas products from said the 3rd compressor; Thereby the acquisition liquefied carbon dioxide gas, and the top of said cooling apparatus with transport pipeline connection from first gas products of said gas delivery membrane module, be used for second gas products be not cooled liquefaction gas phase partly be transported in first gas products.
Another preferred embodiment according to the utility model also comprises: the fertile application apparatus of gas, be communicated with said catalyticcombustion equipment, and be used to receive gas from after the burning of said catalyticcombustion equipment.
According to another preferred embodiment of the utility model, the fertile application apparatus of said gas is little algae conversion unit or agricultural planting booth.
Another preferred embodiment according to the utility model also comprises: catalyticcombustion equipment, be communicated with said sweetener, and second gas products from said sweetener is used to burn; And heat-transfer devices, with the hot tie-in of said catalyticcombustion equipment, be used for that the heat that catalyticcombustion equipment produces is delivered to heat and utilize equipment again.
In the utility model; Through the gas delivery membrane module fermentation gas is separated into the methane gas of high density and the dioxide gas of high density; Thereby can methane gas be applied directly to gas ductwork or be compressed into compressed natural gas used as vehicle fuel; Can supply both culturing microalgae, agriculture prodn to use dioxide gas simultaneously, improve product production and quality as gas is fertile.
Description of drawings
Fig. 1 shows the biogas utilization system architecture diagram according to first preferred embodiment of the utility model; With
Fig. 2 shows the biogas utilization system architecture diagram of second preferred embodiment in addition according to the utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, do further bright specifically to the technical scheme of the utility model.In specification sheets, same or analogous drawing reference numeral is indicated same or analogous parts.Followingly the explanation of the utility model embodiment is intended to the overall utility model design of the utility model is made an explanation, and is not to be understood that and is a kind of restriction the utility model with reference to accompanying drawing.
[first embodiment]
Fig. 1 shows the biogas utilization system architecture diagram according to first preferred embodiment of the utility model.
Of Fig. 1, this biogas utilization system mainly comprises: utilize the producer gas generator of generation of waste materials fermentation gas, for example, fermentor tank 101; Biogas cabinet 102 is communicated with fermentor tank 101, is used to store the fermentation gas from fermentor tank 101; First compressor 103 is communicated with biogas cabinet 102, is used to compress the fermentation gas from biogas cabinet 102; Strainer 104 is communicated with said first compressor 103, is used for filtering out solid particulate and the moisture from the fermentation gas of first compressor 103; With gas separating film module 105, be communicated with strainer 104 and the fermentation gas of the device of inherent filtration in the future 104 to separate into first gas products and the staple that staple is a methane be second gas products of carbonic acid gas.
In the embodiment shown in fig. 1, a side of generation first gas products of gas delivery membrane module 105 is connected with gas ductwork 106, and being used for to gas ductwork 106 supply staples is first gas products of methane.
In the embodiment shown in fig. 1, the biogas utilization system also comprises: dehydration equipment 108, and a side of generation first gas products of membrane module 105 separated from the gas is communicated with, and is used for removing the moisture of first gas products; With second compressor 109, be communicated with dehydration equipment 108, be used to compress first gas products, thereby obtain compressed natural gas used as vehicle fuel from dehydration equipment 108.
In the embodiment shown in fig. 1, the biogas utilization system also comprises: sweetener 107, and a side of generation second gas products of membrane module 105 separated from the gas is communicated with, and is used for removing the sulfur-bearing thing of second gas products; The 3rd compressor 112 is communicated with sweetener 107, is used to compress second gas products from sweetener 107; With cooling apparatus 113; Be communicated with the 3rd compressor 112; Be used to cool off second gas products from the 3rd compressor 112; Thereby the acquisition liquefied carbon dioxide gas, and the top of cooling apparatus 113 with transport pipeline connection from first gas products of gas delivery membrane module 105, be used for second gas products be not cooled liquefaction gas phase partly be transported in first gas products.
In the embodiment shown in fig. 1, the biogas utilization system also comprises: catalyticcombustion equipment 110, be communicated with sweetener 107, and second gas products from sweetener 107 is used to burn; With hot water pump group 111, hot tie-in between catalyticcombustion equipment 110 and fermentor tank 101 is used for the heat that catalyticcombustion equipment 110 produces is delivered to fermentor tank 101.
In the embodiment shown in fig. 1, the biogas utilization system also comprises: catalyticcombustion equipment 110, be communicated with sweetener 107, and second gas products from sweetener 107 is used to burn; Gentle fertile application apparatus is communicated with catalyticcombustion equipment 110, is used to receive the gas from after the burning of catalyticcombustion equipment 110.
In the embodiment shown in fig. 1, the fertile application apparatus of gas can be both culturing microalgae equipment or agricultural planting booth.
To specify the working process of first embodiment of the utility model below by Fig. 1:
1) biogas of anaerobic fermentation tank 101 generations is stored in the biogas storage cabinet 102, removes part moisture; Boost to 0.5-0.8Mpa through no oily biogas compressor 103; The water coolant of biogas compressor 103 can be for membrane module 105 insulations, and through thermopair controlled chilling hydro-thermal water bypass flow regulator, temperature is controlled at 20-50 ℃;
2) biogas after boosting filters through tornado dust collector, 5-10 micron accurate filter 104 through preliminary condensation, deviates from most of solid particulate and moisture;
3) entering of the biogas after rough purification gas delivery membrane module 105 carries out gas delivery;
4) neutral gas and rare gas element at gas delivery membrane module 105 on the pressure side can not see through film, become product gas (first gas products), and staple is a methane;
5) product gas side is through gas on-line monitoring device analysis CH
4Content is regulated product gas side pressure regulation valve, makes product side gaseous constituent satisfy national standard;
6) sour gas and polar gas penetrate the film of gas delivery membrane module 105, become sub product gas, and staple is carbonic acid gas, moisture and hydrogen sulfide (second gas products);
7) according to customer need, the product gas that obtains can directly feed gas distributing system or dewater after compressor 109 further is compressed to 25MPa, processes compressed natural gas used as vehicle fuel (CNG) through dehydration equipment 108, sells the steam supply car outward and uses;
8) contain most H in the biogas in the sub product gas phase that obtains
2S can be earlier through sweetener 107 biological desulphurizations, and recovery part sulphur passes through the desulfurization of dry type red stone again, make that H2S is lower than 10mg/Nm in the bi-product gas
3
9) contain 90%CO in the sub product gas phase that obtains
2, 5-10%CH
4, behind two-step desulfurization, be compressed to 5MPa, be cooled to 15 ℃ through compressor 112 again through cooling apparatus 113, obtain liquid CO
2Product is sold outward as industrial chemicals; Major part is CH in the gas phase of liquid upper
4, incorporate in the product gas phase, improve CH in the biogas
4Yield to 98%-99%;
10) the sub product CO that obtains
2In contain the CH of the 5-10% that has an appointment
4, behind two-step desulfurization, catalytic combustion technology also capable of using reclaims heat energy, for example through hot water pump group 111 and fermentor tank 101 hot tie-ins, is used for fermentor tank insulation and fermentation raw material heating, reduces the fermentation stage energy expenditure;
11) tail gas behind the catalyticcombustion also can utilize, and major ingredient is the CO of about 40%-50%
2With 50% N
2, can be used as the fertile use of gas of both culturing microalgae, agricultural greenhouse production, improve agricultural output, kill pests, economic benefit is higher.
First embodiment of the utility model shown in Figure 1 has following advantage at least:
The utility model makes the CH in the biogas
4And CO
2Farthest utilized, obtained purity 90%-95%CH
4Supply gas ductwork or further compression system compressed natural gas used as vehicle fuel (CNG); CO
2Supply both culturing microalgae, agriculture prodn to use, improve product production and quality as gas is fertile;
The utility model membrane sepn working pressure is 0.5-0.8MPa, and far below the 1.5-3.6MPa of external membrane module, working pressure is low, and the device fabrication cost is low, and working cost is low;
20-50 ℃ of the utility model membrane separation assemblies service temperature, compressor cooling circulating water capable of using need not additional heat consumption as heating, be incubated thermal source;
The used membrane module form of the utility model can be tubular fibre formula, flat, spiral wound, tubular type;
The used membrane material of the utility model is the organic polymer material of surface-coated organic amine, optionally sees through sour gas;
The membrane module of the utility model is a flash trapping stage, also can adopt the two-stage membrane separation process for improving product gas side methane concentration more than 95%, and promptly one-level membrane sepn gas further separates through second membrane module again;
The product gas CH that the utility model obtains through membrane sepn
4Pressure reduces less, presses pipe network or decompression back to get into low-pressure pipe network in can directly charging into without boosting, and perhaps through further dewatering, be compressed to 25Mpa, reaches the compressed natural gas used as vehicle fuel standard, drives automobile, and income is bigger;
The utility model mainly consists of 90%CO mutually through the sub product that membrane sepn obtains
2, 5-10%CH
4, and most H in the biogas
2S;
Sub product contains most H in the biogas in mutually
2S, through biological desulphurization, recovery part sulphur passes through the desulfurization of dry type red stone again, makes H in the bi-product gas through earlier
2S is lower than 10mg/Nm
3
The utility model contains the CH of the 5-10% that has an appointment in mutually through sub product that membrane sepn obtains
4, behind two-step desulfurization, obtain liquid CO through compression, cooling again
2Product is sold outward as industrial chemicals; Major part is CH in the gas phase of liquid upper
4, incorporate in the product gas phase, improve CH in the biogas
4Yield;
The utility model contains the CH of the 5-10% that has an appointment in mutually through sub product that membrane sepn obtains
4, behind two-step desulfurization, catalytic combustion technology also capable of using reclaims heat energy, is used for fermentor tank insulation and fermentation raw material heating, reduces the fermentation stage energy expenditure;
The utility model is through the tail gas behind the catalyticcombustion, and major ingredient is the CO of about 40%-50%
2With 50% N
2, can be used as the fertile use of gas of both culturing microalgae, agricultural greenhouse production, improve agricultural output, kill pests, economic benefit is higher.
Introduce the instance of three practical applications of biogas utilization system shown in Figure 1 below.
[instance 1]
Certain methane station, fermentation raw material are chicken manure, and biogas output is 20000Nm
3/ d.Adopt the utility model to carry out purification processes, purify back gas and charge into local gas distributing system, and the recovering liq carbonic acid gas.The refuse embedded gas gas composition is as shown in table 1:
Table 1
| Composition | CH 4 | CO 2 | N 2 | H 2 | H 2S | Other |
| Content % | 63 | 35 | 1 | 0.1 | 0.03 | 0-1 |
Algorithm:
1) biogas of anaerobic fermentation tank generation is stored in the biogas storage cabinet, removes part moisture; Boost to 0.8Mpa, compressor power 90Kw through no oily biogas compressor 1;
2) the biogas temperature of compressor outlet is through tentatively being condensed to 40 ℃, and through the tornado dust collector dedusting, 5 microns accurate filters filter;
3) entering of the biogas after rough purification gas delivery membrane module carries out gas delivery, and membrane module is sealed in the tank, utilizes compressor water coolant heat to be incubated, and cooling water flow is through thermopair feedback Flux Valve Control, and temperature is controlled at 40 ℃;
4) product gas methane content is controlled at 95%;
5) product airshed 525Nm
3/ h, methane recovery 95% charges into and presses gas distributing system in the locality;
6) sub product gas 308Nm
3/ h boosts to 5MPa through CO again through the desulfurization of dry oxidation iron, is cooled to 15 ℃, obtains liquid CO
213.3 ton; Methane content is higher in the gas phase mixes with product gas; Compressor power 90Kw.
Met " Sweet natural gas (GB17820-1999) " secondary gas standard Sweet natural gas 525Nm through the utility model
3/ h, CH
4The recovery 99%, the about 0.45Kw/Nm of power consumption
3Product gas is far below existing stripping technique.Obtain 13.3 tons of liquid carbon dioxides simultaneously, better economic benefit.
[instance 2]
Certain methane station, fermentation raw material are corn straw, and biogas output is 10000Nm
3/ d adopts present method to handle, and purifies back gas and charges into local gas distributing system, and carbonic acid gas does not reclaim, through catalyticcombustion recovery part heat energy.Unstripped gas is formed like table 2.
Table 2
| Composition | CH 4 | CO 2 | N 2 | H 2 | H 2S | Other |
| Content % | 57 | 40 | 2 | 0.1 | 0.03 | 0-1 |
Met " Sweet natural gas (GB17820-1999) " secondary gas standard Sweet natural gas 237,5Nm through test through the utility model
3/ h, CH
4The recovery 95%, the about 0.25Kw/Nm of power consumption
3Product gas.
[instance 3]
Certain rubbish from cooking treatment station utilizes high-temperature anaerobic fermentation to produce biogas, daily output 10000Nm
3Further compression obtained CNG after/d biogas, plan adopted the purification purification techniques to process bio-natural gas, supplied local automobile use, and carbonic acid gas is not recycled, through catalyticcombustion recovery part heat energy.Virgin gas is formed as shown in table 3 below.
Table 3
| Composition | CH 4 | CO 2 | N 2 | H 2 | H 2S | Other |
| Content % | 67 | 30 | 1 | 0.1 | 0.3 | 0-2 |
Product gas obtains the higher CNG of quality, natural gas compressor power 55Kw through further compression behind the two-stage membrane sepn.
Met " compressed natural gas used as vehicle fuel (GB18047-2000) " standard C NG264Nm through the utility model
3/ h, CH
4The recovery 90%, the about 0.55Kw/Nm of power consumption
3CNG, recovery heat energy satisfies fermentor tank and is incubated outward.
[second embodiment]
Fig. 2 shows that the refuse embedded gas according to second preferred embodiment of the utility model utilizes system architecture diagram.
Of Fig. 2, this refuse embedded gas utilizes system, mainly comprises: the gas collection pipes (not shown) that is distributed in refuse landfill; Gas blower 202 is communicated with gas collection pipes, utilizes negative pressure to aspirate fermentation gas from gas collection pipes; Strainer 104 is communicated with gas blower 202, is used for filtering out solid particulate and the moisture from the fermentation gas of gas blower 202; First compressor 103 is communicated with strainer 104, is used to compress the fermentation gas from strainer 104; With gas separating film module 105, be communicated with first compressor 103, being used for the fermentation gas from first compressor 103 is separated into first gas products and the staple that staple is a methane is second gas products of carbonic acid gas.
In an embodiment shown in Figure 2, a side of generation first gas products of gas delivery membrane module 105 is connected with gas ductwork 106, and being used for to gas ductwork 106 supply staples is first gas products of methane.
In an embodiment shown in Figure 2, refuse embedded gas utilizes system also to comprise: second compressor 109, and a side of generation first gas products of membrane module 105 separated from the gas is communicated with, and is used to compress first gas products from gas delivery membrane module 105; With dehydration equipment 108, be communicated with second compressor 109, be used for removing the moisture of first gas products, thereby obtain compressed natural gas used as vehicle fuel.
In an embodiment shown in Figure 2, refuse embedded gas utilizes system also to comprise: sweetener 107, and a side of generation second gas products of membrane module 105 separated from the gas is communicated with, and is used for removing the sulfur-bearing thing of second gas products; The 3rd compressor 112 is communicated with sweetener 107, is used to compress second gas products from sweetener 107; With cooling apparatus 113; Be communicated with the 3rd compressor 112; Be used to cool off second gas products from the 3rd compressor 112; Thereby the acquisition liquefied carbon dioxide gas, and the top of cooling apparatus 113 with transport pipeline connection from first gas products of gas delivery membrane module 105, be used for second gas products be not cooled liquefaction gas phase partly be transported in first gas products.
In an embodiment shown in Figure 2, the biogas utilization system also comprises: the fertile application apparatus of gas, be communicated with sweetener 107, and be used to receive gas from after the desulfurization of sweetener 107.
In an embodiment shown in Figure 2, the fertile application apparatus of gas is little algae conversion unit or agricultural planting booth.
In an embodiment shown in Figure 2, refuse embedded gas utilizes system also to comprise: catalyticcombustion equipment 110, and a side of generation second gas products of membrane module 105 separated from the gas is communicated with, and second gas products from gas delivery membrane module 105 is used to burn; And heat-transfer devices, with 110 hot tie-ins of catalyticcombustion equipment, be used for that the heat that catalyticcombustion equipment 110 produces is delivered to heat and utilize equipment again, for example, steam heating, absorption type air-conditioner etc.
To specify the working process of second embodiment of the utility model below by Fig. 2:
1) refuse embedded gas utilizes Root's blower 202 negative pressure-pumpings to treating plant through collecting pipe network;
2) through after tornado dust collector, 104 filtrations of 5-10 micron accurate filter, deviate from most of solid particulate and moisture;
3) utilize oil free compressor 103 to boost to 0.5-0.8Mpa, landfill gas gets into gas delivery membrane module 105 and carries out gas delivery;
4) neutral gas and rare gas element at gas delivery membrane module 105 on the pressure side can not see through film, and (staple is CH to become product gas
4First gas products);
5) product gas side is through gas on-line monitoring device analysis CH
4Content is regulated product gas side pressure regulation valve, makes product side gaseous constituent satisfy national standard;
6) sour gas and polar gas penetrate the film of gas delivery membrane module 105, and (staple is CO to become sub product gas
2Second gas products);
7) according to customer need, the product gas that obtains can directly feed gas distributing system 106 or further be compressed to 25MPa, after dehydration equipment 108 dehydrations, processes compressed natural gas used as vehicle fuel (CNG), the recovery of methane about 95% again through compressor 109;
8) CH that contains about 5%-10% in the sub product gas that obtains
4H with the overwhelming majority
2S carries out catalyticcombustion through catalyticcombustion equipment 110, is translated into heat energy recycle, but heating of supplied gas purifying station and absorption type air-conditioner refrigeration, and the tail gas monitoring meets the gaseous emission standard;
9) CO in the sub product gas that obtains
2Content 90%-95% according to customer need, can be compressed to 5MPa after cooling apparatus 113 is cooled to 15 ℃ through compressor 112 after sweetener 107 further desulfurization, obtain liquid CO
2The methane gas of cooling liquid phase top can directly get into product gas side without separating, and can make the recovery of methane bring up to 98%-99% like this.
10) sub product gas can be used as plant gas fertilizer behind dry desulfurization, improves agricultural output and quality, prevents insect pest.
Second embodiment of the utility model shown in Figure 2 has following advantage at least:
The utility model can make two kinds of maximum gas CH of component in the refuse embedded gas
4And CO
2Farthest utilized, obtained purity 85%-95%CH
4Supply gas ductwork or further compression system CNG; Liquid CO
2Supply agriculture gas fertilizer, both culturing microalgae, chemical industry etc.;
The utility model membrane sepn working pressure is 0.5-0.8MPa, and far below the 1.5-3.6MPa of external membrane module, working pressure is low, and the device fabrication cost is low, and working cost is low;
20-50 ℃ of the utility model membrane separation assemblies service temperature, compressor cooling circulating water capable of using need not additional heat consumption as heating, be incubated thermal source;
The used membrane module form of the utility model can be tubular fibre formula, flat, spiral wound, tubular type;
The used membrane material of the utility model is the organic polymer material of surface-coated organic amine, optionally sees through sour gas;
The product gas CH that the utility model obtains through membrane sepn
4Pressure reduces less, presses pipe network in can directly getting into without boosting or reducing pressure;
The sub product CO that the utility model obtains through membrane sepn
2Can further compress cooling and obtain liquid carbon dioxide;
The utility model sub product CO
2Like need liquefaction, can adopt rearmounted thionizer, can reduce tower body volume and void tower flow velocity than the preposition desulfurization of tradition, reduce construction investment;
The utility model sub product CO
2Produce the CH that contains in the cooling gas phase in the liquid carbon dioxide process
4Mix with product gas, can improve the CH of system
4Yield reaches 99%;
The sub product CO that the utility model obtains through membrane sepn
2In contain the CH of the 5-10% that has an appointment
4With most H
2S, catalytic burning technology for recovery partial heat energy also capable of using, and remove the objectionable constituent in the tail gas.
Introduce the instance that refuse embedded gas shown in Figure 2 utilizes three practical applications of system below.
[instance 1]
Certain southern refuse landfill has the about 20000Nm of refuse embedded gas at present approximately
3/ d does not effectively utilize, through the torch burning disposal.Adopt present method to handle, purify back gas and charge into local gas distributing system, and the recovering liq carbonic acid gas.The refuse embedded gas gas composition is as shown in table 4:
Table 4
| Composition | CH 4 | CO 2 | N 2 | H 2 | H 2S | Other |
| Content % | 57 | 38 | 3 | 0.1 | 0.03 | 0-2 |
Algorithm:
1) utilize Root's blower as vacuum pump, the negative pressure-pumping refuse embedded gas, Root's blower total head 68.4Kpa, power 30Kw has condensate drain outlet before the gas blower;
2) remove dust, PM for particulate matter and portion water steam through tornado dust collector;
3) filter further dedusting and dehydration through 5 microns accurate filters again;
4) utilize reciprocating type oil-free gas compressor to boost to 0.8Mpa, compressor power 90Kw utilizes recirculated water to cool off, and gas gets into membrane separation unit to be separated;
5) membrane module is sealed in the tank, utilizes compressor water coolant heat to be incubated, and cooling water flow is through thermopair feedback Flux Valve Control, and temperature is controlled at 40 ℃;
6) see through membrane module product gas and analyze CH through On-Line Monitor Device of Gas
4Content, control electric press variable valve is regulated product gas wall pressure, guarantees CH in the product gas
4Concentration is not less than 90%, H
2S is lower than 10mg/Nm
3
7) product airshed 500Nm
3/ h, methane recovery 95% charges into and presses gas distributing system in the locality;
8) sub product gas 336Nm
3/ h boosts to 5MPa through CO again through the desulfurization of dry oxidation iron, is cooled to 15 ℃, obtains liquid CO
216 tons; Methane content is higher in the gas phase mixes with product gas; Compressor power 90Kw.
Met " Sweet natural gas (GB17820-1999) " secondary gas standard Sweet natural gas 501Nm through the present invention
3/ h, CH
4The recovery 99%, the about 0.45Kw/Nm of power consumption
3Product gas is far below existing stripping technique.Obtain 16 tons of liquid carbon dioxides simultaneously.
[instance 2]
Certain southern refuse landfill has the about 10000Nm of refuse embedded gas at present approximately
3/ d does not effectively utilize, through the torch burning disposal.Adopt present method to handle, purify back gas and charge into local gas distributing system, carbonic acid gas does not reclaim.Unstripped gas form as before.
Met " Sweet natural gas (GB17820-1999) " secondary gas standard Sweet natural gas 250Nm through calculating through the present invention
3/ h, CH
4The recovery 95%, the about 0.25Kw/Nm of power consumption
3Product gas.
[instance 3]
Certain poulty house utilizes anaerobically fermenting to handle chicken manure, and biogas 10000Nm is arranged at present approximately
3/ d is used for generating, and further compression obtained CNG after plan adopted the purification purification techniques to process bio-natural gas, supplied local automobile use, and carbonic acid gas is not recycled.Virgin gas is formed as shown in table 5 below.
Table 5
| Composition | CH 4 | CO 2 | N 2 | H 2 | H 2S | Other |
| Content % | 67 | 30 | 1 | 0.1 | 0.3 | 0-2 |
Product gas obtains the higher CNG of quality, natural gas compressor power 55Kw through further compression behind the two-stage membrane sepn.
Met " compressed natural gas used as vehicle fuel (GB18047-2000) " standard C NG264Nm through the present invention
3/ h, CH
4The recovery 90%, the about 0.55Kw/Nm of power consumption
3CNG.
Though in conjunction with accompanying drawing the utility model is illustrated, disclosed embodiment is intended to the utility model preferred implementation is carried out exemplary illustration in the accompanying drawing, and can not be interpreted as a kind of restriction to the utility model.
Though some embodiment of this overall utility model design are shown and explain; Those skilled in the art will appreciate that; Under the situation of principle that does not deviate from this overall utility model design and spirit; Can make a change these embodiment, the scope of the utility model limits with claim and their equivalent.
Claims (10)
1. a biogas utilization system is characterized in that, comprising:
Utilize the producer gas generator of generation of waste materials fermentation gas; With
Gas delivery membrane module (105), being communicated with and will separating into first gas products and the staple that staple is a methane from the fermentation gas of said producer gas generator with said producer gas generator is second gas products of carbonic acid gas.
2. biogas utilization according to claim 1 system, it is characterized in that: said producer gas generator is fermentor tank (101).
3. biogas utilization according to claim 1 system, it is characterized in that: said producer gas generator is refuse landfill gas trap (201).
4. according to each described biogas utilization system in the claim 1 to 3, it is characterized in that, also comprise:
First compressor (103) is used to compress the fermentation gas from producer gas generator; With
Strainer (104), its inlet is communicated with said first compressor (103), and outlet is communicated with the inlet of said gas delivery membrane module (105), is used for filtering out solid particulate and the moisture from the fermentation gas of said first compressor (103).
5. biogas utilization according to claim 4 system; It is characterized in that; One side of generation first gas products of said gas delivery membrane module (105) is connected with gas ductwork (106), and being used for to gas ductwork (106) supply staple is first gas products of methane.
6. biogas utilization according to claim 4 system is characterized in that, also comprises:
Dehydration equipment (108) is communicated with a side of generation first gas products of said gas delivery membrane module (105), is used for removing the moisture of first gas products; With
Second compressor (109) is communicated with said dehydration equipment (108), is used for first gas products of compression from said dehydration equipment (108), thereby obtains compressed natural gas used as vehicle fuel.
7. biogas utilization according to claim 4 system is characterized in that, also comprises:
Sweetener (107) is communicated with a side of generation second gas products of said gas delivery membrane module (105), is used for removing the sulfur-bearing thing of second gas products;
The 3rd compressor (112) is communicated with said sweetener (107), is used for second gas products of compression from said sweetener (107); With
Cooling apparatus (113); Be communicated with said the 3rd compressor (112); Be used for second gas products of cooling from said the 3rd compressor (112); Thereby the acquisition liquefied carbon dioxide gas, and the top of said cooling apparatus (113) with transport pipeline connection from first gas products of said gas delivery membrane module (105), be used for second gas products be not cooled liquefaction gas phase partly be transported in first gas products.
8. biogas utilization according to claim 4 system is characterized in that, also comprises:
Catalyticcombustion equipment (110) is communicated with said sweetener (107), is used for second gas products of burning from said sweetener (107); With
The fertile application apparatus of gas is communicated with said catalyticcombustion equipment (110), is used for receiving from the gas after the burning of said catalyticcombustion equipment (110).
9. biogas utilization according to claim 2 system is characterized in that, also comprises:
Biogas cabinet (102) is communicated with said fermentor tank (101), is used for storing the fermentation gas from said fermentor tank (101).
10. biogas utilization according to claim 3 system is characterized in that said refuse landfill gas trap (201) also comprises:
Be distributed in the gas collection pipes of refuse landfill; With
Gas blower (202) is communicated with said gas collection pipes, utilizes negative pressure to aspirate fermentation gas from gas collection pipes.
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|---|---|---|---|
| CN2011204708232U CN202322831U (en) | 2011-11-24 | 2011-11-24 | Methane and landfill gas utilization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204708232U CN202322831U (en) | 2011-11-24 | 2011-11-24 | Methane and landfill gas utilization system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
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