CN203333608U - Marsh gas purification system - Google Patents
Marsh gas purification system Download PDFInfo
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- CN203333608U CN203333608U CN2013202445566U CN201320244556U CN203333608U CN 203333608 U CN203333608 U CN 203333608U CN 2013202445566 U CN2013202445566 U CN 2013202445566U CN 201320244556 U CN201320244556 U CN 201320244556U CN 203333608 U CN203333608 U CN 203333608U
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- gas
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- carbon dioxide
- marsh gas
- storage tank
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Abstract
The utility model discloses a marsh gas purification system which solves the problems of high investment cost, high operating cost, high failure rate and low purification purity in the existing system. The marsh gas purification system comprises an anaerobic tank (1), a granular filter (2), a drying tower (3), a desulfurizing tower (4), a gas receiver (5), a steam-water separator (6), a low-pressure marsh gas compressor (7), an interception-type prefilter (8), a freeze drying machine (9), a coalescing filter (10), an oil-water separation filter (11), a precise ultimate filter (12), a heater (13), a first CO2/CH4 high-efficiency separation membrane (14), a second CO2/CH4 high-efficiency separation membrane (19) and a marsh gas storage tank (20), wherein a rich gas port (15) of the first CO2/CH4 high-efficiency separation membrane (14) is communicated with a carbon dioxide purifier (16); and the carbon dioxide purifier (16) is connected with a carbon dioxide storage tank (17). The utility model can remove carbon dioxide in raw gas, and has high purification rate.
Description
Technical field
The utility model relates to a kind of methane purification system, particularly a kind of to comprising that several large class environments such as plant, animal and movement thereof, rubbish and organic waste water produce the system of carrying out methane purification of biogas.
Background technology
In biogas, the content of methane is 60%-65%, and the content of carbonic acid gas is 35%-40%, and also contains a small amount of hydrogen sulfide.The existence of carbon dioxide in methane has reduced the energy density of biogas, if biogas used need to reach Natural gas standard or be used as automobile fuel, so just must be removed carbonic acid gas wherein.At present, the method of methane purification technique has high-pressure washing method, pressure swing adsorption process, chemical absorption method etc., and these technology and equipments exist that cost of investment is high, running cost is high, failure rate is high, maintenance cost is high, can not regulate continuously, the problem such as large, the contaminate environment of noise while working.
Summary of the invention
The utility model provides a kind of methane purification system, has solved the problem that cost of investment is high, running cost is high, failure rate is high and purification purity is low that existing system exists.
The utility model is to solve by the following technical programs above technical problem:
A kind of methane purification system, comprise anaerobic jar, be connected with particulate filter on anaerobic jar, be connected with drying tower on particulate filter, be connected with thionizer on drying tower, be connected with gas holder on thionizer, be connected with steam separator on gas holder, be connected with the low pressure marsh gas compressor on steam separator, be connected with the intercept type prefilter on the low pressure marsh gas compressor, be connected with freezing type drier on the intercept type prefilter, be connected with the coagulation type strainer on freezing type drier, be connected with oil water separation filtering on the coagulation type strainer, be connected with accurate ultimate filter on oil water separation filtering, be connected with well heater on accurate ultimate filter, the gas delivery port of well heater and a CO
2/ CH
4the input aperture of high-efficient diffusion barrier is communicated with, a CO
2/ CH
4the delivery port of high-efficient diffusion barrier and the 2nd CO
2/ CH
4the input aperture of separatory membrane is communicated with, the 2nd CO
2/ CH
4the delivery port of separatory membrane is communicated with the input aperture of biogas storage tank, the delivery port of biogas storage tank by middle pressure Marsh gas compression machine with add gas holder and be communicated with, be connected with respectively natural gas vehicle cashier's office in a shop and add smelly cabinet in aerating.
The one CO
2/ CH
4the rich gas mouth of high-efficient diffusion barrier is communicated with carbon dioxide purifying device, is connected with carbon dioxide storage tank on carbon dioxide purifying device, at the 2nd CO
2/ CH
4the rich gas mouth of separatory membrane is communicated with the input aperture of low pressure marsh gas compressor.
The methane purification system that the utility model relates to has the following advantages: the methane purification rate is high, can effectively remove the carbonic acid gas in biogas, and the biogas concentration after purification can reach more than 99.6%; Adopt two-stage film group to carry out methane purification, utilize the absorption property difference of two-stage film group to be removed carbonic acid gas, and can be to CO
2/ CH
4the waste gas carbonic acid gas of high-efficient diffusion barrier is recycled, and avoids the discharge to sky to cause topsoil.And to CO
2/ CH
4the backflow gas of separatory membrane is confluxed to be used again, and its rate of recovery can be up to 95%; The characteristics such as embrane method methane purification technique has that little, the various gaseous constituent on-line monitoring of floor space, running cost are low, failure rate is low, maintenance cost are low, can regulate continuously, operating noise is low.
The utility model can fall the co 2 removal in unstripped gas, and purification rate is high, and the carbonic acid gas in unstripped gas can be recycled, and avoid the discharge to sky to pollute, and a whole set of processing unit can be realized full-automatic operation.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of methane purification system, comprise anaerobic jar 1, be connected with particulate filter 2 on anaerobic jar 1, be connected with drying tower 3 on particulate filter 2, be connected with thionizer 4 on drying tower 3, be connected with gas holder 5 on thionizer 4, be connected with steam separator 6 on gas holder 5, be connected with low pressure marsh gas compressor 7 on steam separator 6, be connected with intercept type prefilter 8 on low pressure marsh gas compressor 7, be connected with freezing type drier 9 on intercept type prefilter 8, be connected with coagulation type strainer 10 on freezing type drier 9, be connected with oil water separation filtering 11 on coagulation type strainer 10, be connected with accurate ultimate filter 12 on oil water separation filtering 11, be connected with well heater 13 on accurate ultimate filter 12, the gas delivery port of well heater 13 and a CO
2/ CH
4the input aperture of high-efficient diffusion barrier 14 is communicated with, a CO
2/ CH
4the delivery port of high-efficient diffusion barrier 14 and the 2nd CO
2/ CH
4the input aperture of separatory membrane 19 is communicated with, the 2nd CO
2/ CH
4the delivery port of separatory membrane 19 is communicated with the input aperture of biogas storage tank 20, the delivery port of biogas storage tank 20 by middle pressure Marsh gas compression machine 21 with add gas holder 23 and be communicated with, be connected with respectively natural gas vehicle 24 and add smelly cabinet 22 adding on gas holder 23.
The one CO
2/ CH
4the rich gas mouth 15 of high-efficient diffusion barrier 14 is communicated with carbon dioxide purifying device 16, is connected with carbon dioxide storage tank 17 on carbon dioxide purifying device 16, at the 2nd CO
2/ CH
4the rich gas mouth 18 of separatory membrane 19 is communicated with the input aperture of low pressure marsh gas compressor 7.
A kind of methane purification technique comprises the following steps:
At first the first step, the biogas that will produce from anaerobic jar 1 be input to particulate filter 2, until particulate matter, with after condensation product is separated, reenter in drying tower 3 and will carry out moisture removal;
The biogas of second step, drying enters thionizer 4 and carries out desulfurization, and the biogas after desulfurization enters gas holder 5 again;
Biogas in the 3rd step, gas holder 5 enters low pressure marsh gas compressor 7 after steam separator 6, biogas after compression enters methane purifying system, and biogas enters well heater 13 and heated after intercept type prefilter 8, freezing type drier 9, coagulation type strainer 10, oil water separation filtering 11, accurate ultimate filter 12;
The 4th step, the biogas after heating enter a CO at the temperature of 28 ℃-55 ℃
2/ CH
4high-efficient diffusion barrier 14 carries out carbonic acid gas and methane high efficiency separation, and the carbon dioxide after separation is through a CO
2/ CH
4high-efficient diffusion barrier rich gas mouth 15 enters after carbon dioxide purifying device 16 is purified and enters into carbon dioxide storage tank 17;
The 5th step, through a CO
2/ CH
4biogas after high-efficient diffusion barrier 14 separates enters into the 2nd CO
2/ CH
4separatory membrane 19 further carries out methane and carbon dioxide separation, through the 2nd CO
2/ CH
4the gas of rich gas mouth 18 discharge of separatory membrane 19 is got back to before compressor 7 purification that again circulates, through the 2nd CO
2/ CH
4the biogas that separatory membrane 19 film delivery ports are discharged enters biogas storage tank 20;
Biogas in the 6th step, biogas storage tank 20 through in press Marsh gas compression machine 21 to be pressurized to 40 handkerchiefs, and added after smelly and enter 23 pairs of natural gas vehicles of aerating cabinet 24 and carry out aerating through adding smelly cabinet 22.
The utility model is different from the infiltration rate of methane in the hollow-fibre membrane group according to carbonic acid gas, and carbonic acid gas is removed and recycled, and produces pure biogas, can be used for industrial chemicals, domestic fuel etc.
Claims (2)
1. a methane purification system, comprise anaerobic jar (1), be connected with particulate filter (2) on anaerobic jar (1), be connected with drying tower (3) on particulate filter (2), be connected with thionizer (4) on drying tower (3), be connected with gas holder (5) on thionizer (4), be connected with steam separator (6) on gas holder (5), be connected with low pressure marsh gas compressor (7) on steam separator (6), be connected with intercept type prefilter (8) on low pressure marsh gas compressor (7), be connected with freezing type drier (9) on intercept type prefilter (8), be connected with coagulation type strainer (10) on freezing type drier (9), be connected with oil water separation filtering (11) on coagulation type strainer (10), be connected with accurate ultimate filter (12) on oil water separation filtering (11), be connected with well heater (13) on accurate ultimate filter (12), the gas delivery port of well heater (13) and a CO
2/ CH
4the input aperture of high-efficient diffusion barrier (14) is communicated with, a CO
2/ CH
4the delivery port of high-efficient diffusion barrier (14) and the 2nd CO
2/ CH
4the input aperture of separatory membrane (19) is communicated with, the 2nd CO
2/ CH
4the delivery port of separatory membrane (19) is communicated with the input aperture of biogas storage tank (20), the delivery port of biogas storage tank (20) by middle pressure Marsh gas compression machine (21) with add gas holder (23) and be communicated with, be connected with respectively natural gas vehicle (24) and add smelly cabinet (22) adding on gas holder (23).
2. a kind of methane purification system according to claim 1, is characterized in that, a CO
2/ CH
4the rich gas mouth (15) of high-efficient diffusion barrier (14) is communicated with carbon dioxide purifying device (16), is connected with carbon dioxide storage tank (17) on carbon dioxide purifying device (16), at the 2nd CO
2/ CH
4the rich gas mouth (18) of separatory membrane (19) is communicated with the input aperture of low pressure marsh gas compressor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202445566U CN203333608U (en) | 2013-05-08 | 2013-05-08 | Marsh gas purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202445566U CN203333608U (en) | 2013-05-08 | 2013-05-08 | Marsh gas purification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203333608U true CN203333608U (en) | 2013-12-11 |
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ID=49702298
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202445566U Expired - Fee Related CN203333608U (en) | 2013-05-08 | 2013-05-08 | Marsh gas purification system |
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| Country | Link |
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| CN (1) | CN203333608U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087355A (en) * | 2014-06-17 | 2014-10-08 | 吉林省惠泽燃气有限公司 | Biomass biogas purification method |
| CN104909456A (en) * | 2015-05-25 | 2015-09-16 | 上海成越新能源科技有限公司 | Landfill leachate anaerobic biogas purification method |
| CN104927951A (en) * | 2015-05-22 | 2015-09-23 | 宁夏宝塔石化科技实业发展有限公司 | Decarbonization and dehydration process for natural gas |
-
2013
- 2013-05-08 CN CN2013202445566U patent/CN203333608U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087355A (en) * | 2014-06-17 | 2014-10-08 | 吉林省惠泽燃气有限公司 | Biomass biogas purification method |
| CN104087355B (en) * | 2014-06-17 | 2016-04-27 | 吉林省惠泽燃气有限公司 | A kind of biomass marsh gas method of purification |
| CN104927951A (en) * | 2015-05-22 | 2015-09-23 | 宁夏宝塔石化科技实业发展有限公司 | Decarbonization and dehydration process for natural gas |
| CN104909456A (en) * | 2015-05-25 | 2015-09-16 | 上海成越新能源科技有限公司 | Landfill leachate anaerobic biogas purification method |
| CN104909456B (en) * | 2015-05-25 | 2018-01-05 | 上海成越新能源科技有限公司 | Percolate anaerobic methane purification method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 |