CN103232871A - Methane purification system and methane purification technology thereof - Google Patents
Methane purification system and methane purification technology thereof Download PDFInfo
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- CN103232871A CN103232871A CN2013101664842A CN201310166484A CN103232871A CN 103232871 A CN103232871 A CN 103232871A CN 2013101664842 A CN2013101664842 A CN 2013101664842A CN 201310166484 A CN201310166484 A CN 201310166484A CN 103232871 A CN103232871 A CN 103232871A
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- biogas
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Abstract
The invention discloses a methane purification system and a methane purification technology thereof, solving problems of high investment cost, high operation cost, high fault rate and low purification purity of a conventional system. The system comprises an anaerobic tank (1), a particle filter (2), a drying tower (3), a desulfurizing tower (4), a gasometer (5), a steam-water separation device (6), a low-pressure methane compressor (7), an interception type prefilter (8), a refrigeration drying machine (9), an agglomeration type filter (10), an oil-water separation filter (11), a precise ultimate filter (12), a heater (13), a first CO2/CH4 efficient separation membrane (14), a second CO2/CH4 efficient separation membrane (19) and a methane storage tank (20), wherein a methane-enrichment port (15) of the first CO2/CH4 efficient separation membrane (14) is communicated with a carbon dioxide purification device (16), and a carbon dioxide storage tank (17) is connected with the carbon dioxide purification device (16). The purification technology has high purification rate; and the whole set of technology can realize full-automatic operation.
Description
Technical field
The present invention relates to a kind of methane purification system, particularly a kind of to comprising the system that biogas is purified that carries out of several big class biogas that environment produces such as plant, animal and movement thereof, rubbish and organic waste water, and the processing method of utilizing this system to purify.
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 spot of hydrogen sulfide.The existence of carbonic acid gas has reduced the energy density of biogas in the biogas, if used biogas need reach the Sweet natural gas standard or be used as automobile fuel, so just must remove carbonic acid gas wherein.At present the method for biogas purifying technique has high-pressure washing method, pressure swing adsorption process, chemical absorption method etc., has cost of investment height, running cost height, failure rate height, maintenance cost height, can not regulate continuously, problem such as big, the contaminate environment of noise when working.And these traditional biogas purification process can only be removed a part of impurity in the biogas, fail comparatively completely biogas to be purified.
Summary of the invention
The invention provides a kind of methane purification system and biogas purifying technique thereof, solved cost of investment height, running cost height, failure rate height and the low problem of purification purity that existing system exists.
The present invention solves above technical problem by the following technical programs:
A kind of methane purification system, comprise anaerobic jar, be connected with particulate filter at anaerobic jar, be connected with drying tower at particulate filter, be connected with thionizer at drying tower, be connected with gas holder at thionizer, be connected with steam separator at gas holder, be connected with low pressure biogas compressor at steam separator, be connected with the intercept type prefilter at low pressure biogas compressor, be connected with freezing type drier at the intercept type prefilter, be connected with the coagulation type strainer at freezing type drier, be connected with the oily water separation strainer at the coagulation type strainer, be connected with accurate ultimate filter at the oily water separation strainer, be connected with well heater at 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 biogas compressor with add gas holder and be communicated with, be connected with natural gas vehicle cashier's office in a shop respectively and add smelly cabinet in aerating.
The one CO
2/ CH
4The rich gas mouth of high-efficient diffusion barrier is communicated with the carbonic acid gas purifying plant, is connected with carbon dioxide storage tank at the carbonic acid gas purifying plant, at the 2nd CO
2/ CH
4The rich gas mouth of separatory membrane is communicated with the input aperture of low pressure biogas compressor.
A kind of biogas purifying technique may further comprise the steps:
The first step, will at first be input to the particulate filter from the biogas that anaerobic jar produces, after treating particulate matter and condensation product separating, reenter and carry out moisture removal in the drying tower;
The biogas of second step, drying enters thionizer and carries out desulfurization, and the biogas after desulfurization enters gas holder again;
Biogas in the 3rd step, the gas holder enters low pressure biogas compressor behind steam separator, biogas after compression enters methane purifying system, enters well heater behind biogas process intercept type prefilter, freezing type drier, coagulation type strainer, oily water separation strainer, the accurate ultimate filter and heats;
The 4th step, the biogas after heating enter a CO under 28 ℃～55 ℃ temperature
2/ CH
4High-efficient diffusion barrier carries out carbonic acid gas and methane high efficiency separation, and the carbon dioxide after the separation is through a CO
2/ CH
4High-efficient diffusion barrier rich gas mouth enters and enters into carbon dioxide storage tank after the carbonic acid gas purifying plant is purified;
The 5th the step, through a CO
2/ CH
4Biogas behind the high efficiency separation membrane sepn enters into the 2nd CO
2/ CH
4Separatory membrane further carries out methane and carbon dioxide separation, through the 2nd CO
2/ CH
4The gas of the rich gas mouth of separatory membrane discharging is got back to the purification that circulates again before the compressor, through the 2nd CO
2/ CH
4The biogas that separatory membrane film delivery port is discharged enters the biogas storage tank;
The 6th step, the biogas in the biogas storage tank through in press the biogas compressor to be pressurized to 40 handkerchiefs, and add and enter the aerating cabinet after smelly natural gas vehicle is carried out aerating through adding smelly cabinet.
The biogas purifying technique that the present invention relates to has the following advantages: biogas purification rate height, can effectively remove the carbonic acid gas in the biogas, and the biogas concentration after the purification can reach more than 99.6%; Adopt two-stage film group to carry out biogas and purify, utilize the absorption property difference of two-stage film group that carbonic acid gas is removed, and can be to CO
2/ CH
4The waste gas carbonic acid gas of high-efficient diffusion barrier is recycled, and avoids sky discharging is caused topsoil.And to CO
2/ CH
4The backflow gas of separatory membrane confluxes and is used again, and its rate of recovery can be up to 95%; Embrane method biogas purifying technique has characteristics such as floor space is little, all gases composition on-line monitoring, running cost is low, failure rate is low, maintenance cost is low, can regulate continuously, operating noise is low.
The present invention can fall the co 2 removal in the unstripped gas, and purification efficiency height, and the carbonic acid gas in the unstripped gas can recycle avoids that discharging pollutes to sky, and a whole set of technology can realize full-automatic operation.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
A kind of methane purification system, comprise anaerobic jar 1, be connected with particulate filter 2 at anaerobic jar 1, be connected with drying tower 3 at particulate filter 2, be connected with thionizer 4 at drying tower 3, be connected with gas holder 5 at thionizer 4, be connected with steam separator 6 at gas holder 5, be connected with low pressure biogas compressor 7 at steam separator 6, be connected with intercept type prefilter 8 at low pressure biogas compressor 7, be connected with freezing type drier 9 at intercept type prefilter 8, be connected with coagulation type strainer 10 at freezing type drier 9, be connected with oily water separation strainer 11 at coagulation type strainer 10, be connected with accurate ultimate filter 12 at oily water separation strainer 11, be connected with well heater 13 at 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 biogas compressor 21 with add gas holder 23 and be communicated with, be connected with natural gas vehicle 24 on the gas holder 23 respectively and add smelly cabinet 22 adding.
The one CO
2/ CH
4The rich gas mouth 15 of high-efficient diffusion barrier 14 is communicated with carbonic acid gas purifying plant 16, is connected with carbon dioxide storage tank 17 at carbonic acid gas purifying plant 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 biogas compressor 7.
A kind of biogas purifying technique may further comprise the steps:
The first step, will at first be input to the particulate filter 2 from the biogas that anaerobic jar 1 produces, after treating particulate matter and condensation product separating, reenter and carry out moisture removal in the drying tower 3;
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, the gas holder 5 enters low pressure biogas compressor 7 behind steam separator 6, biogas after compression enters methane purifying system, enters well heater 13 behind biogas process intercept type prefilter 8, freezing type drier 9, coagulation type strainer 10, oily water separation strainer 11, the accurate ultimate filter 12 and heats;
The 4th step, the biogas after heating enter a CO under 28 ℃～55 ℃ temperature
2/ CH
4High-efficient diffusion barrier 14 carries out carbonic acid gas and methane high efficiency separation, and the carbon dioxide after the separation is through a CO
2/ CH
4High-efficient diffusion barrier rich gas mouth 15 enters and enters into carbon dioxide storage tank 17 after carbonic acid gas purifying plant 16 is purified;
The 5th the 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 discharging of separatory membrane 19 is got back to the purification that circulates again before the compressor 7, through the 2nd CO
2/ CH
4The biogas that separatory membrane 19 film delivery ports are discharged enters biogas storage tank 20;
The 6th step, the biogas in the biogas storage tank 20 through in press biogas compressor 21 to be pressurized to 40 handkerchiefs, and add and enter 23 pairs of natural gas vehicles of aerating cabinet 24 after smelly and carry out aerating through adding smelly cabinet 22.
The present invention is different with 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, is used for industrial chemicals, domestic fuel etc.
Claims (3)
1. methane purification system, comprise anaerobic jar (1), be connected with particulate filter (2) at anaerobic jar (1), be connected with drying tower (3) at particulate filter (2), be connected with thionizer (4) at drying tower (3), be connected with gas holder (5) at thionizer (4), be connected with steam separator (6) at gas holder (5), be connected with low pressure biogas compressor (7) at steam separator (6), be connected with intercept type prefilter (8) at low pressure biogas compressor (7), be connected with freezing type drier (9) at intercept type prefilter (8), be connected with coagulation type strainer (10) at freezing type drier (9), be connected with oily water separation strainer (11) at coagulation type strainer (10), be connected with accurate ultimate filter (12) at oily water separation strainer (11), be connected with well heater (13) at 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 biogas compressor (21) with add gas holder (23) and be communicated with, be connected with natural gas vehicle (24) on the gas holder (23) respectively and add smelly cabinet (22) adding.
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 carbonic acid gas purifying plant (16), is connected with carbon dioxide storage tank (17) at carbonic acid gas purifying plant (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 biogas compressor (7).
3. biogas purifying technique may further comprise the steps:
The first step, will at first be input to the particulate filter (2) from the biogas that anaerobic jar (1) produces, after treating particulate matter and condensation product separating, reenter in the drying tower (3) and 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, the gas holder (5) enters low pressure biogas compressor (7) behind steam separator (6), biogas after compression enters methane purifying system, enters well heater (13) behind biogas process intercept type prefilter (8), freezing type drier (9), coagulation type strainer (10), oily water separation strainer (11), the accurate ultimate filter (12) and heats;
The 4th step, the biogas after heating enter a CO under 28 ℃-55 ℃ temperature
2/ CH
4High-efficient diffusion barrier (14) carries out carbonic acid gas and methane high efficiency separation, and the carbon dioxide after the separation is through a CO
2/ CH
4High-efficient diffusion barrier rich gas mouth (15) enters and enters into carbon dioxide storage tank (17) after carbonic acid gas purifying plant (16) is purified;
The 5th the 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) discharging of separatory membrane (19) is got back to the preceding purification that circulates again of compressor (7), through the 2nd CO
2/ CH
4The biogas that separatory membrane (19) film delivery port is discharged enters biogas storage tank (20);
The 6th step, the biogas in the biogas storage tank (20) through in press biogas compressor (21) to be pressurized to 40 handkerchiefs, and add and enter aerating cabinet (23) after smelly natural gas vehicle (24) is carried out aerating through adding smelly cabinet (22).
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| CN2013101664842A CN103232871A (en) | 2013-05-08 | 2013-05-08 | Methane purification system and methane purification technology thereof |
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| CN2013101664842A CN103232871A (en) | 2013-05-08 | 2013-05-08 | Methane purification system and methane purification technology thereof |
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Cited By (15)
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| CN103674156A (en) * | 2013-12-30 | 2014-03-26 | 农业部环境保护科研监测所 | Metering device and metering method of laboratory trace gases |
| CN103667355A (en) * | 2013-11-20 | 2014-03-26 | 青岛天人环境股份有限公司 | Method for preparing fuel gas for vehicle by using organic waste |
| CN103667024A (en) * | 2013-11-20 | 2014-03-26 | 青岛天人环境股份有限公司 | Device for preparing vehicle fuel gas from organic waste |
| CN103666614A (en) * | 2013-11-20 | 2014-03-26 | 青岛天人环境股份有限公司 | Device for purifying and preparing natural gas for automobile from biogas through decarbonization |
| CN103834449A (en) * | 2014-03-18 | 2014-06-04 | 界首市德广牧业有限公司 | Methane liquefying method |
| WO2014206248A1 (en) * | 2013-06-24 | 2014-12-31 | 北京合力清源科技有限公司 | Container-type biogas purification film method purification system |
| CN104449925A (en) * | 2014-12-26 | 2015-03-25 | 北京神雾环境能源科技集团股份有限公司 | Separating system for removing CO2 from synthesis gas/ natural gas |
| CN104711060A (en) * | 2015-02-27 | 2015-06-17 | 安徽寅时压缩机制造有限公司 | Multistage filtering type natural gas compressor |
| CN105132062A (en) * | 2015-09-21 | 2015-12-09 | 七台河宝泰隆煤化工股份有限公司 | Method for preparing LNG through methane |
| CN105132059A (en) * | 2015-07-10 | 2015-12-09 | 常州市南飞机械有限公司 | Permeating separation desulfurization apparatus and permeating separation desulfurization method |
| CN106119091A (en) * | 2016-06-24 | 2016-11-16 | 公安县前锋科技能源有限公司 | A kind of methane purification and canned system and technique |
| CN106430888A (en) * | 2016-11-30 | 2017-02-22 | 黑龙江省科学院科技孵化中心 | Movable sewage treatment device and treatment method thereof |
| CN106497760A (en) * | 2016-12-03 | 2017-03-15 | 上海垣锦机电设备制造有限公司 | Biogas membrance separation purifying plant |
| CN108929735A (en) * | 2018-06-11 | 2018-12-04 | 焦作市华中能源科技有限公司 | It is a kind of using pressurization filter membrane come the purifying technique of purifying biogas |
| CN111961509A (en) * | 2020-08-18 | 2020-11-20 | 北京中持绿色能源环境技术有限公司 | Biogas membrane purification system and method |
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| CN103667024A (en) * | 2013-11-20 | 2014-03-26 | 青岛天人环境股份有限公司 | Device for preparing vehicle fuel gas from organic waste |
| CN103666614A (en) * | 2013-11-20 | 2014-03-26 | 青岛天人环境股份有限公司 | Device for purifying and preparing natural gas for automobile from biogas through decarbonization |
| CN103674156B (en) * | 2013-12-30 | 2016-06-22 | 农业部环境保护科研监测所 | A kind of metering method utilizing laboratory micro gas-metering device |
| CN103674156A (en) * | 2013-12-30 | 2014-03-26 | 农业部环境保护科研监测所 | Metering device and metering method of laboratory trace gases |
| CN103834449A (en) * | 2014-03-18 | 2014-06-04 | 界首市德广牧业有限公司 | Methane liquefying method |
| CN104449925A (en) * | 2014-12-26 | 2015-03-25 | 北京神雾环境能源科技集团股份有限公司 | Separating system for removing CO2 from synthesis gas/ natural gas |
| CN104711060B (en) * | 2015-02-27 | 2017-02-01 | 安徽寅时压缩机制造有限公司 | Multistage filtering type natural gas compressor |
| CN104711060A (en) * | 2015-02-27 | 2015-06-17 | 安徽寅时压缩机制造有限公司 | Multistage filtering type natural gas compressor |
| CN105132059A (en) * | 2015-07-10 | 2015-12-09 | 常州市南飞机械有限公司 | Permeating separation desulfurization apparatus and permeating separation desulfurization method |
| CN105132062A (en) * | 2015-09-21 | 2015-12-09 | 七台河宝泰隆煤化工股份有限公司 | Method for preparing LNG through methane |
| CN106119091A (en) * | 2016-06-24 | 2016-11-16 | 公安县前锋科技能源有限公司 | A kind of methane purification and canned system and technique |
| CN106430888A (en) * | 2016-11-30 | 2017-02-22 | 黑龙江省科学院科技孵化中心 | Movable sewage treatment device and treatment method thereof |
| CN106497760A (en) * | 2016-12-03 | 2017-03-15 | 上海垣锦机电设备制造有限公司 | Biogas membrance separation purifying plant |
| CN106497760B (en) * | 2016-12-03 | 2019-07-02 | 上海垣锦机电设备制造有限公司 | Biogas UF membrane purifying plant |
| CN108929735A (en) * | 2018-06-11 | 2018-12-04 | 焦作市华中能源科技有限公司 | It is a kind of using pressurization filter membrane come the purifying technique of purifying biogas |
| CN111961509A (en) * | 2020-08-18 | 2020-11-20 | 北京中持绿色能源环境技术有限公司 | Biogas membrane purification system and method |
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Application publication date: 20130807 |