CN109652150A - It is a kind of to utilize biogas development coal extraction extremely low concentration gas electricity method - Google Patents
It is a kind of to utilize biogas development coal extraction extremely low concentration gas electricity method Download PDFInfo
- Publication number
- CN109652150A CN109652150A CN201811426690.1A CN201811426690A CN109652150A CN 109652150 A CN109652150 A CN 109652150A CN 201811426690 A CN201811426690 A CN 201811426690A CN 109652150 A CN109652150 A CN 109652150A
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- China
- Prior art keywords
- gas
- biogas
- low concentration
- extremely low
- electricity
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Classifications
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- 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
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
-
- C—CHEMISTRY; METALLURGY
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- 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
-
- 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
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention patent utilizes biogas development coal extraction extremely low concentration gas electricity method to be a kind of.Belong to energy development and pollution reduction field, and in particular to a kind of collection coal mine periphery organic waste progress biogas production, the electricity-generating method of mixed extraction extremely low concentration gas (CH4≤5%).The present invention, which mainly solves extremely low concentration gas, can not efficiently use environmental problem caused by direct emission；It is personal that its electricity generated can be used for coal mine plant area, the heat of generation can be used for marsh-gas fermentation tank heat with long-term heat supply, improve the economic benefit of biogas development.It is low that the present invention solves extremely low concentration gas utilization rate, the problems such as environmental pollution, bad mining area safety, and, high reliablity simple using biogas development coal extraction extremely low concentration gas electricity system operation maintenance, the energy brings benefits obviously, has stronger novelty.
Description
Technical field
The invention belongs to energy developments and pollution reduction field, and in particular to a kind of collection coal mine periphery organic waste
Carry out biogas production, mixed extraction extremely low concentration gas (CH4≤ 5%) it generates electricity, can not have to reduce extremely low concentration gas
Environmental problem caused by effect utilization is in line also improves the economic benefit of biogas development.
Background technique
Gas, also known as coal bed gas, gas reserves are huge, and only just there are 36,000,000,000,000 cubes of reserves in China, and major coal mine is every
Year gas drainage amount is more than 10,000,000,000 cubes, but due to the restriction of the factors such as technical restriction, geological conditions, causes present coal mine
The total release accounting example of the low-concentration gas of concentration < 10% is very big in extraction, more than 60%-70%.Wherein, in extraction process
In, there are a large amount of extremely low concentration gas (CH4≤ 5%), big using difficulty due to it, proportion of utilization is extremely low, current each mine with
Direct emission in atmosphere based on, not only cause a large amount of waste of resource, also environment caused greatly to destroy.Existing gas electricity is set
Mixing methane gas that is standby, being generally only applicable in 8%~30% concentration range, in addition, coal mine gas tolerance and CH4With pumping
The increase of time is adopted, the trend of decaying is also gradually appeared.On the other hand, there are a large amount of organic domestic waste and agricultures for coal mine life
Crop material, discarded or open burning will cause severe environments and security risk.
Summary of the invention
It is an object of the present invention to overcome the prior art to extremely low concentration gas (CH4≤ 5%) it can not utilize, one kind is provided
It is to utilize coal mine and the organic waste on periphery production biogas (CH4Content is 50%-70%), it is carried out with extremely low concentration device in Gas
Mixture makes mixed gas CH4>=8%, while by the regulation of fermentation process, the tolerance and makings of mixed gas is effectively ensured, improves
The economic benefit of the steady in a long-term and coal mine gas exploitation of electricity generation system, guarantees the permanently effective exploitation of coal mine extremely low concentration gas
With power generation supply steady in a long-term.
The purpose of the present invention is achieved through the following technical solutions:
It is of the invention using biogas development coal extraction extremely low concentration gas electricity system by air distribution system, electricity generation system and
Waste heat temperature-increasing system composition, bionethanation system is it is characterized in that control natural pond according to the amount (organic matter feed loading) of fermented feed liquid (2)
Gas output number, feed pump (1) is set in dosing chamber, feed pump (1) and marsh-gas fermentation tank (5) pass through feed pipe (4) company
It connects, heat exchanger (19) is set in marsh-gas fermentation tank (5), biogas gas-guide tube (6) are arranged in marsh-gas fermentation tank (5) top, biogas air guide
Pipe (6) is connect with biogas storage cabinet (7), and biogas storage cabinet (7) outlet is connect with biogas pipe (9), and biogas is arranged on (9) in biogas pipe
Frequency modulation blower (8), coal mine (10) is interior to be arranged gas gas-guide tube (11), and gas gas-guide tube (11) is connect with gas gas-holder (12),
Gas gas-holder (12) outlet is connect with gas pipe (14), gas frequency modulation blower (13) is arranged on gas pipe (14), biogas pipe (9)
Collaborate with gas pipe (14), connect by generator air inlet pipe (15) with generator (16), generator electricity production passes through cable (17)
It is transported to use, heat production is transported to use by heating network (18).
The principle of the present invention is: extraction extremely low concentration gas can be obtained preferably by the temporary and homogeneous of gas gas-holder
Gas source stabilization, the specific gas of makings.Biogas production then can pass through the control of inlet amount according to the demand of methane in the unit time
The output of system regulation biogas, the biogas and gas of production realize setting ratio dispatching by frequency modulation blower, to generator requirement
Mixed combustion gas can carry out cogeneration of heat and power, the electricity of generation can be used for that coal mine plant area is personal, and the heat of generation is for marsh-gas fermentation tank increasing
Mild long-term heat supply.Since coal mine is variation in the tolerance and makings of different times extraction extremely low concentration gas, and biogas
Output then can more power demand and distribution require, motor-driven at any time to be adjusted, therefore can guarantee that steadily in the long term extraction is extremely low
The effective exploitation of concentration gas, while generator heat production utilizes nearby, and the utilization efficiency of heat production is effectively guaranteed.
The beneficial effects of the present invention are: (1) present invention setting marsh gas fermenting system, it can be by handling coal mine periphery nearby
Organic waste, maneuverability production high methane content biogas, can be permanently effective guarantee distribution gas source stability,
The utilization efficiency of extraction extremely low concentration gas can be significantly improved, operating cost is reduced.(2) present invention is directed to extraction extremely low concentration watt
This produces that gas is unstable, the unfixed feature of makings, can effective mixture using carrying out targetedly distribution after gas-holder homogeneous peak regulation
Tolerance, air pressure and the bright stabilization of methane row, can preferably guarantee combustion gas using digestion, promoted generator power generation and fever effect
Rate.(3) present invention controls the yield of biogas using the input amount of organic waste, has effectively eliminated the unstable of distribution member
Property, it solves and supplies unstable deficiency by other gas sources, the plant maintenance investment of gas source deposit can continue forever and guarantee pole nearby
The exploitation and utilization of low concentration gas, it is ensured that the economy and stability of extraction extremely low concentration gas exploitation.(4) present invention utilizes
Biomass develops and uses extraction extremely low concentration gas, realizes especially with biological flue gas and controls the dynamic with gas source, makes it
High reliablity, maintenance management are convenient, do not depend on other energy, be suitable for carrying out extraction extremely low concentration in the vast mining area in China
Gas exploitation.
Therefore, the present invention overcomes extraction extremely low concentration gas in the prior art to utilize, and a large amount of emptyings cause environment
The deficiency that pollution is big, mining area safety is bad, what is provided utilizes biogas development coal extraction extremely low concentration gas electricity system can
The organic stabilizers gas-to electricity of effective extraction extremely low concentration gas, effectively improves the economy of coal mine, reduces coal mining
Problem of environmental pollution in journey, Operation and Maintenance is simple, high reliablity, and benefit is evident for Energy output, guarantees extraction extremely low concentration watt
This is developed steadily in the long term, has adapted to the high status of China's coal-mine plant area organic waste collection property.
Detailed description of the invention
Fig. 1 is schematic diagram of the invention.
In attached drawing, 1: feed pump；2: fermented feed liquid；3: dosing chamber；4: feed pipe；5: marsh-gas fermentation tank；6: biogas air guide
Pipe；7: biogas storage cabinet；8: biogas frequency modulation blower；9: biogas pipe；10: coal mine；11: gas gas-guide tube；12: gas gas-holder；
13: gas frequency modulation blower；14: gas pipe；15: generator air inlet pipe；16: generator；17: cable；18: heating network；19: changing
Hot device.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments, but the present invention is not limited only to the embodiment.
This example using biogas development coal extraction extremely low concentration gas electricity system as shown in Figure 1, coal mine and periphery
The wastes such as organic domestic waste and agricultural crop straw enter dosing chamber (3) by feed pump (1), are added and are fermented according to inlet amount
The mixture of waste and fermentation liquid importing marsh-gas fermentation tank (5) is then fermented by feed pipe (4), is fermented by feed liquid (2)
Biogas is stored in biogas storage cabinet (7) by biogas gas-guide tube (6) after the completion, and the biogas in biogas storage cabinet (7) can pass through
Heat exchanger (19) is transported to use through heating tube (18) net.Extremely low concentration gas in coal mine (10) passes through gas gas-guide tube (11)
Into gas gas-holder (12), then entered through gas frequency modulation blower (13) from generator air inlet pipe (15) by gas pipe (14)
Generator (16), with the natural pond for entering generator from generator air inlet pipe (15) after biogas frequency modulation blower (8) by biogas pipe (9)
Gas carries out mixture；The electricity that generator generates is transported to use by cable (17).
Claims (9)
1. a kind of utilize biogas development coal extraction extremely low concentration gas power generation technology and method, it is characterised in that:
It is transported and storage system, automatic gas air distribution system, electricity generation system and waste heat including biogas generation system, low concentration gas
It is formed using system.
Bionethanation system is characterized in that: utilizing the organic matters such as the stalk in farmland, plant around coal mine or the kitchen rubbish on coal mine periphery
Rubbish, according to the amount (organic matter feed loading) of fermented feed liquid control biogas production amount number, feed pump is set in dosing chamber, into
Material pump is connected with marsh-gas fermentation tank by feed pipe, and heat exchanger is arranged in marsh-gas fermentation tank, and biogas is arranged in marsh-gas fermentation tank top
Gas-guide tube, biogas gas-guide tube are connect with biogas storage cabinet, and biogas storage cabinet outlet is connect with biogas pipe, and biogas is arranged in biogas pipe
Frequency modulation blower.
Low concentration gas is transported to be characterized in that with storage system: extremely low concentration (< 5%) gas in underground passes through coal mine from underground extraction
The gas of interior setting transports pipeline into the storage tank on ground, transport tube road setting anti-backfire, anti-blowback, datonation-inhibition, ground connection etc.
Safety device.
Automatic gas distribution system is characterized in that: extremely low concentration gas is transported from gas storage tank or transport tube road direction gas electricity unit
In the process, apart from gas electricity unit certain distance, automatic biogas adding set is set, which can pass through low concentration pipeline
In gas density and flow sensor, according to the aimed concn and flow that can be utilized after mixing, calculating needs natural pond to be added
Gas concentration and flow, and aimed concn and flow are realized by explosion-proof solenoid valve control flow and mixed concentration, after mixing
Gas can be attached with gas electricity system.
Electricity generation system is characterized in that: extremely low concentration gas electricity system can mixing gas to 5-16% concentration and biogas carry out
It utilizes.Electricity generation system electricity production is by cable transfer to electricity consumption place, while the heat generated is transported to by heating network with heat
Place.
2. a kind of utilization biogas development coal extraction extremely low concentration gas power generation technology and method according to claim 1,
It is characterized in that, the bionethanation system includes feed pump, feed pipe, marsh-gas fermentation tank, biogas storage cabinet, biogas gas-guide tube, natural pond
Tracheae and biogas frequency modulation blower, and according to the amount of fermented feed liquid (organic matter feed loading) control biogas production amount number.
3. a kind of utilization biogas development coal extraction extremely low concentration gas power generation technology and method according to claim 2,
It is characterized in that, heat exchanger is arranged in the marsh-gas fermentation tank, and pass through the biogas gas-guide tube and biogas on marsh-gas fermentation tank top
Gas-holder is connected.
4. a kind of utilization biogas development coal extraction extremely low concentration gas power generation technology and method according to claim 3,
It is characterized in that, the outlet of the biogas storage cabinet is connect with biogas pipe, and biogas frequency modulation blower is set in biogas pipe.
5. a kind of utilization biogas development coal extraction extremely low concentration gas power generation technology and method according to claim 1,
It is characterized in that, it includes gas gas-guide tube, gas gas-holder, gas pipe and gas that the low concentration gas, which is transported with storage system,
Frequency modulation blower, and the safety devices such as anti-backfire, anti-blowback, datonation-inhibition, ground connection are set on transport tube road.
6. a kind of utilization biogas development coal extraction extremely low concentration gas power generation technology and method according to claim 5,
It is characterized in that, the gas gas-guide tube is connected with gas gas-holder, gas gas-holder outlet is connected with gas pipe, and watt
Gas frequency modulation blower is set on this pipe.
7. a kind of utilization biogas development coal extraction extremely low concentration gas power generation technology and method according to claim 1,
It is characterized in that, the automatic biogas adding set of setting, the device can make biogas storage cabinet on demand in the automatic gas distribution system
Interior biogas mix with the low concentration gas in gas pipe by biogas pipe, mixed gas pass through generator air inlet pipe and watt
This electricity generation system is attached.
8. a kind of utilization biogas development coal extraction extremely low concentration gas power generation technology and method according to claim 1,
It is characterized in that, the electricity generation system by generator air inlet pipe import 5-16% concentration gas and biogas mixed gas into
Row power generation.Electricity generation system electricity production is by cable transfer to electricity consumption place, while the heat generated is transported to use by heating network
Thermally point.
9. a kind of utilization biogas development coal extraction extremely low concentration gas electricity skill according to any one of claims 1 to 8
Art and method, which is characterized in that the bionethanation system controls biogas production according to the amount (organic matter feed loading) of fermented feed liquid
Amount number；The low concentration gas transports and the transport tube of storage system road setting anti-backfire, anti-blowback, datonation-inhibition, ground connection
Equal safety devices；The automatic gas distribution system connects after can mixing low concentration gas with biogas with gas electricity system
It connects；The electricity generation system electricity production is by cable transfer to electricity consumption place, while the heat generated is transported to use by heating network
Thermally point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811426690.1A CN109652150A (en) | 2018-11-27 | 2018-11-27 | It is a kind of to utilize biogas development coal extraction extremely low concentration gas electricity method |
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| CN201811426690.1A CN109652150A (en) | 2018-11-27 | 2018-11-27 | It is a kind of to utilize biogas development coal extraction extremely low concentration gas electricity method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539078A (en) * | 2020-11-23 | 2021-03-23 | 安徽理工大学 | Biological method hydraulic fracturing strengthens coal seam gas drainage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539078A (en) * | 2020-11-23 | 2021-03-23 | 安徽理工大学 | Biological method hydraulic fracturing strengthens coal seam gas drainage system |
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Application publication date: 20190419 |