CN103589472A - Mobile low-concentration coal bed gas concentration device and concentration method thereof - Google Patents
Mobile low-concentration coal bed gas concentration device and concentration method thereof Download PDFInfo
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Abstract
The invention relates to a mobile low-concentration coal bed gas concentration device which comprises a PLC (programmable logic controller) centralized control system arranged on a flat-plate mine car for mine; a primary anti-explosion air compressor in a housing is connected with a gas preprocessing system and a primary pressure swing adsorption concentration system in sequence through high-pressure rubber pipes. The device is characterized in that the primary pressure swing adsorption concentration system is connected with a secondary anti-explosion air compressor and a secondary pressure swing adsorption concentration system in the housing in sequence through high-pressure rubber pipes. Meanwhile, the invention discloses a concentration method of the device. The device is integrated on the flat-plate mine car for mine in a modularization manner, quick connection and motion are realized, the requirements of synchronous mining and extraction and mobile mining and extraction are met, the secondary anti-explosion air compressor and the secondary pressure swing adsorption concentration system are used, low-concentration coal bed gas is concentrated by a two-stage pressure swing adsorption technology in combination with the concentration method, the daily treatment capacity is not less than 24,000 m<3>, the methane content in the coal bed gas is not less than 80%, the methane recovery rate is not less than 60%, and the energy consumption of unit finished gas subjected to concentration is not more than 1.2 kWh/Nm<3>.
Description
Technical field
The present invention relates to a kind of low concentration coal-bed gas concentrating unit and concentration method, especially adopt portable two-stage pressure swing adsorption, realize low concentration coal-bed gas (coal-mine gas) concentrated device and concentration method.
Background technology
Coal-seam gas, the coal-mine gas that is otherwise known as, is a kind of and coal association, with adsorbed state, is stored in the unconventional Sweet natural gas in coal seam, and main component is CH
4.China's coal bed gas resource is abundant, occupies third place in the world, and buried depth 2000m is with shallow coal-seam gas geological resources approximately 36 tcms.The coal-seam gas of methane concentration between 1%-30%, is called low concentration coal-bed gas, and it is mainly exploited by gas drainage system of coal mine.The exploitation of low concentration coal-bed gas can effectively reduce the quantity of wind gas-removing, improve mine safety production condition, improve gas accident and take precautions against level, effectively GHG (Greenhouse Gases) emissions mitigation produce huge economic benefit.
Coal-seam gas is a kind of energy of high-quality cleaning, the calorific value of 1 cubic metre of pure coal-seam gas is equivalent to 1.13kg gasoline, 1.21kg standard coal, its calorific value and Sweet natural gas are suitable, can be mixed defeated mixed with Sweet natural gas, and very clean after burning, produce hardly any waste gas, be first-class industry, chemical industry, generating and resident living fuel, in the current energy structure of China, still take coal under main situation, develop coal bed gas resource and have important practical significance.
Extraction coal-seam gas is also the important means of prevention coal mine gas explosion simultaneously, first exploiting coal bed methane before mining, coal mine gas from explosion rate will reduce by 70% to 85%, strengthen the utilization ratio of coal-seam gas, for improving gas accident, take precautions against level, there is obvious safety effectiveness.
Coal-seam gas is a kind of to the extremely strong greenhouse gases of environmental destruction, and its Greenhouse effect are about 21 times of carbonic acid gas, if be directly discharged in atmosphere, will cause great destruction to environment.
The comprehensive utilization of coal-seam gas is for improvement and optimize the increasingly severe energy structure of China, improves mine safety production condition, ensures that Safety of Coal Mine Production, reduction coal production cost, minimizing topsoil have important economic and social profit.
In recent years, China's coal-seam gas extraction amount improves year by year, is increased to 115 billion cubic meters of 2011 by 22.3 billion cubic meters of 2005.The first half of the year in 2012, China's coal-seam gas extraction amount reaches 64.3 billion cubic meters, increase by 22.8% on a year-on-year basis, wherein, coal mine gas drainage 50.6 billion cubic meters, utilize 16.3 billion cubic meters, according to the 148 relevant regulations of < < safety regulations in coal mine > >, during gas utilization, methane content must not be lower than 30%, therefore, cause the low concentration coal-bed gas that accounts for larger proportion in coal-mine gas total flow rate to be put by sky, coal-seam gas overall utilization rate is only 32.3%, especially vast medium and small colliery, in colliery coal-seam gas extraction process, affected by the airtight factor such as not tight of boring and drainage system, gas utilization rate is lower.Before 2010, China is confined to methane concentration in more than 30% part substantially to the utilization of coal-seam gas, causing China's low concentration coal-bed gas utilization ratio major cause on the low side is to lack effective, economic low concentration coal-bed gas to utilize technology and equipment, concentrated technology and the equipment of utilizing of low concentration coal-bed gas that be especially applicable to medium and small colliery coal-seam gas extraction feature, can move between each extraction place of mine and mine, this also becomes the basic reason of restriction China coal gas industry development.
At present, it is mainly civilian after purifying and the mode such as generating, the oil engine direct generation of electricity, the generating of catalyzed oxidation gas-turbine that China's low concentration coal-bed gas utilizes mode, and method of purification mainly contains three kinds of low-temperature deep method, membrane separation process and pressure swing adsorption processs, wherein:
1. low-temperature deep method gas product methane concentration and the rate of recovery are high, but device running cost and one-time investment volume are large, and only when separated mass air flow, just have economy, are not suitable for the concentrated purification processes of middle and small scale low concentration coal-bed gas extraction;
2. Mehra technique and metal matrix liquid-absorbant technique, the former utilizes hydrocarbon solvent separation of nitrogen, and the latter utilizes metal matrix liquid-absorbant separation of methane and nitrogen, but both are all only in the experimental study stage, do not drop into commercialized running, technical development is not mature enough;
3. membrane separation process has flexibly technological merit easily, but is subject to mould material to select to affect with filming technology, present stage gas separation effect not ideal enough, cost of investment is high in addition, has limited it and has promoted on a large scale;
4. pressure swing adsorption process is easy to operate, and technique is practical, is comparatively fast applied in recent years, as pressure-variable adsorption extracts low concentration coal-bed gas methane technology, CH in gas product
4more than content>=96%, O
2≤ 0.1%, result of use is good, but such technology is only suitable for being applied to fixed, the extensive low concentration coal-bed gas in ground to be processed, facility investment is simultaneously large, running cost is high, for in low scale low concentration coal-bed gas process, because low concentration coal-bed gas extraction amount is limited, many and on-the-spot actual demand is not inconsistent with performance driving economy for large-scale pressure-swing adsorption concentration technical matters working time, the length of service.
In sum, China's present stage shortage is applicable to the extraction of middle and small scale low concentration coal-bed gas, cost-effective coal-seam gas concentration technique and equipment, causes a large amount of coal-seam gas to be drained, and causes lower concentration utilization ratio extremely low.Therefore, in conjunction with domestic medium and small colliery gas drainage with adopting with taking out, the feature such as mobile drainage, extraction scale be limited, concentrated technology and the equipment of utilizing of low concentration coal-bed gas of low, the conveniently moving of research and development unit consumption of energy, excellent property, for effective control China's coal-mine Gas Disaster, improve low concentration coal-bed gas utilization ratio, improve energy consumption structure, reduce environmental pollution and have important practical significance.
Summary of the invention
The object of the invention is to overcome the fixed extensive low concentration coal-bed gas concentrating unit in existing ground and move inconvenience, for middle and small scale coal-seam gas, process poor for applicability, cannot meet middle-size and small-size mine gas drainage condition, and Current Domestic gas utilization field lacks for middle and small scale low concentration coal-bed gas treatment technology equipment disadvantageous effect, a kind of movable low concentration coal-bed gas pressure-swing adsorption concentration device is provided, this device both can be used alone and also can multi-platform combined high-efficient operation form extensive coal-seam gas concentration systems, meet China's medium and small colliery coal-seam gas extraction adopts with adopting with taking out more, the particular requirement of mobile drainage, and can between each extraction place and mine, move flexibly, for improving the level of utilizing of middle and small scale coal mine coal-seam gas extraction, provide reliable equipment Safeguard, adopt portable two-stage pressure swing adsorption, the target that realizes the concentrated methane of low concentration coal-bed gas and utilize, the rationalization that simultaneously realizes coal bed gas resource efficiently utilizes and effectively reduces the topsoil that the discharge of coal-seam gas causes.
The technical solution adopted for the present invention to solve the technical problems is: a kind of portable low concentration coal-bed gas concentrating unit and concentration method are provided.
A kind of portable low concentration coal-bed gas concentrating unit, it comprises the PLC centralized monitoring system being arranged on mining dull and stereotyped mine car, one-level Antiexplosion air compressor in shell is by high-pressure rubber pipe be linked in sequence gas pretreatment system, one-level pressure-swing adsorption concentration system, and feature is: secondary Antiexplosion air compressor, secondary pressure-swing adsorption concentration system that one-level pressure-swing adsorption concentration system is linked in sequence in shell by high-pressure rubber pipe.
Wherein: gas pretreatment system sequentially comprises that gac oil eliminator, several strainer, several accurate filter, one-level gas compression system air accumulator pipe connect.
Wherein: one-level pressure-swing adsorption concentration system comprises that gas pretreatment system pipe connecting is sequentially managed and connects vertical two tower structure pressure-swing absorbers, the one-level pressure-variable adsorption gas product storage tank consist of one-level pressure-swing absorber, in two one-level pressure-swing absorbers, filling carbonaceous molecular sieve absorption agent is nonpolar carbon materials, and production number is CMS-220.
Wherein: one-level pressure-swing adsorption concentration system pipe connecting pipe connects secondary Antiexplosion air compressor.
Wherein: secondary pressure-swing adsorption concentration system comprises that secondary Antiexplosion air compressor pipe connecting is sequentially managed and connects secondary gas compression system air accumulator, the vertical two tower structure pressure-swing absorbers that consist of secondary pressure-swing absorber, secondary pressure-variable adsorption finished product gas storage tank, in two secondary pressure-swing absorbers, filling carbonaceous molecular sieve absorption agent is nonpolar carbon materials, and production number is 3KT-172.
Wherein: first mining dull and stereotyped mine car is loaded with one-level Antiexplosion air compressor, second mining dull and stereotyped mine car is loaded with gas pretreatment system, the 3rd mining dull and stereotyped mine car is loaded with one-level pressure-swing adsorption concentration system, the 4th mining dull and stereotyped mine car is loaded with secondary Antiexplosion air compressor, and the 5th mining dull and stereotyped mine car is loaded with secondary pressure-swing adsorption concentration system.
A kind of concentration method of portable low concentration coal-bed gas concentrating unit, utilize the low concentration coal-bed gas of mine gas drainage system discharge, by PLC centralized monitoring system, control portable low concentration coal-bed gas concentrating unit, after order is carried out one-level gas compression, gas pre-treatment, one-level pressure-swing adsorption concentration, oxygen is emptying, and feature is: the one-level pressure-variable adsorption gas product after one-level pressure-swing adsorption concentration sequentially carries out entering secondary pressure-variable adsorption finished product gas storage tank after secondary gas compression, secondary pressure-swing adsorption concentration nitrogen purge.
A kind of concentration method of portable low concentration coal-bed gas concentrating unit, utilize the low concentration coal-bed gas of mine gas drainage system discharge, by PLC centralized monitoring system, controlled, low concentration coal-bed gas is pressed into gas pretreatment system by one-level Antiexplosion air compressor, by the oil removing of gac oil eliminator, several strainers, several accurate filters dewater and dedusting after, be pressed into one-level gas compression system air accumulator, gas enters one-level pressure-swing adsorption concentration system, by vertical two tower structure pressure-swing absorbers carry out mixed gas deoxygenation emptying after, gas enters one-level pressure-variable adsorption gas product storage tank, feature is: the gas in one-level pressure-variable adsorption gas product storage tank is pressed into secondary pressure-swing adsorption concentration system by secondary Antiexplosion air compressor, be compressed to enter after secondary gas compression system air accumulator vertical two tower structure pressure-swing absorbers carry out mixed gas denitrogenate emptying after, enter secondary pressure-variable adsorption finished product gas storage tank.
The invention has the beneficial effects as follows: a kind of portable low concentration coal-bed gas concentrating unit of the present invention adopts modular design, complete assembly is comprised of five modules, all be incorporated into standard gauge colliery with on dull and stereotyped mine car, thereby realize, connect fast with mobile, met coal-seam gas with adopting with taking out, the requirement of mobile extraction, secondary Antiexplosion air compressor 10, secondary pressure-swing adsorption concentration system 11 is used, concentration method in conjunction with a kind of portable low concentration coal-bed gas concentrating unit adopts two-stage pressure swing adsorption concentrating low-concentration coal-seam gas, more than daily handling ability reaches 2.4 ten thousand steres, in gas product, methane content can reach more than 80%, methane recovery can reach more than 60%, after device is concentrated, unit finished product gas energy consumption is≤1.2kWh/Nm
3, this device both can be used alone, and can form again the low concentration coal-bed gas concentration systems of multimachine co-operation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is a kind of portable low concentration coal-bed gas concentrating unit principle schematic;
Fig. 2 is a kind of portable low concentration coal-bed gas concentrating unit structural representation;
Fig. 3 is a kind of portable low concentration coal-bed gas concentrating unit PLC centralized monitoring system principle schematic;
Fig. 4 is a kind of concentration method principle schematic of portable low concentration coal-bed gas concentrating unit.
In figure: 1. one-level Antiexplosion air compressor, 2. gas pretreatment system, 3. gac oil eliminator, 4. strainer, 5. accurate filter, 6. one-level gas compression system air accumulator, 7. one-level pressure-swing adsorption concentration system, 8. one-level pressure-swing absorber, 9. one-level pressure-variable adsorption gas product storage tank, 10. secondary Antiexplosion air compressor, 11. secondary pressure-swing adsorption concentration systems, 12. secondary gas compression system air accumulators, 13. secondary pressure-swing absorbers, 14. secondary pressure-variable adsorption finished product gas storage tanks, 15. mining dull and stereotyped mine cars, 16. shells, 201. one-level gas compressions, 202. gas pre-treatment, 203. one-level pressure-swing adsorption concentrations, 204. secondary gas compressions, 205. secondary pressure-swing adsorption concentrations.
Embodiment
embodiment mono-
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of portable low concentration coal-bed gas concentrating unit, it comprises the PLC centralized monitoring system being arranged on mining dull and stereotyped mine car 15, one-level Antiexplosion air compressor 1 in shell 16 is by high-pressure rubber pipe be linked in sequence gas pretreatment system 2, one-level pressure-swing adsorption concentration system 7, and feature is: secondary Antiexplosion air compressor 10, secondary pressure-swing adsorption concentration system 11 that one-level pressure-swing adsorption concentration system 7 is linked in sequence in shell by high-pressure rubber pipe.
Wherein: gas pretreatment system 2 order comprises that gac oil eliminator 3, two strainers 4, three accurate filters 5, one-level gas compression system air accumulator 6 pipes connect.
Wherein: one-level pressure-swing adsorption concentration system 7 comprises that gas pretreatment system 2 pipe connectings are sequentially managed and connects vertical two tower structure pressure-swing absorbers, the one-level pressure-variable adsorption gas product storage tank 9 consist of one-level pressure-swing absorber 8, two the interior filling carbonaceous molecular sieve of one-level pressure-swing absorber 8 absorption agents are nonpolar carbon materials, and production number is CMS-220.
Wherein: one-level pressure-swing adsorption concentration system 7 pipe connecting pipes connect secondary Antiexplosion air compressor 10.
Wherein: secondary pressure-swing adsorption concentration system 11 comprises vertical two tower structure pressure-swing absorbers, the secondary pressure-variable adsorption finished product gas storage tank 14 that secondary Antiexplosion air compressor 10 pipe connectings are sequentially managed connection secondary gas compression system air accumulator 12, consisted of secondary pressure-swing absorber 13, two the interior filling carbonaceous molecular sieve of secondary pressure-swing absorber 13 absorption agents are nonpolar carbon materials, and production number is 3KT-172.
Wherein: first mining dull and stereotyped mine car is loaded with one-level Antiexplosion air compressor 1, second mining dull and stereotyped mine car 15 is loaded with gas pretreatment system 2, comprise gac oil eliminator 3, two strainers 4, three accurate filters 5, one-level gas compression system air accumulator 6, the 3rd mining dull and stereotyped mine car is loaded with one-level pressure-swing adsorption concentration system 7, comprise the vertical two tower structure pressure-swing absorbers that formed by one-level pressure-swing absorber 8, one-level pressure-variable adsorption gas product storage tank 9, the 4th mining dull and stereotyped mine car is loaded with secondary Antiexplosion air compressor 10, the 5th mining dull and stereotyped mine car is loaded with secondary pressure-swing adsorption concentration system 11, comprise secondary gas compression system air accumulator 12, the vertical two tower structure pressure-swing absorbers that formed by secondary pressure-swing absorber 13, secondary pressure-variable adsorption finished product gas storage tank 14.
embodiment bis-
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of concentration method of portable low concentration coal-bed gas concentrating unit, utilize the low concentration coal-bed gas of mine gas drainage system discharge, by PLC centralized monitoring system, control portable low concentration coal-bed gas concentrating unit, order is carried out one-level gas compression 201, gas pre-treatment 202, the rear oxygen of one-level pressure-swing adsorption concentration 203 is emptying, feature is: the one-level pressure-variable adsorption gas product after one-level pressure-swing adsorption concentration 203 sequentially carries out secondary gas compression 204, after secondary pressure-swing adsorption concentration 205 nitrogen purge, enter secondary pressure-variable adsorption finished product gas storage tank 14.
embodiment tri-
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of concentration method of portable low concentration coal-bed gas concentrating unit, utilize the low concentration coal-bed gas of mine gas drainage system discharge, by PLC centralized monitoring system, controlled, low concentration coal-bed gas is pressed into gas pretreatment system 2 by one-level Antiexplosion air compressor 1, by 3 oil removings of gac oil eliminator, two strainers 4, three accurate filters 5 dewater and dedusting after, be pressed into one-level gas compression system air accumulator 6, gas enters one-level pressure-swing adsorption concentration system 7, by vertical two tower structure pressure-swing absorbers carry out mixed gas deoxygenation emptying after, gas enters one-level pressure-variable adsorption gas product storage tank 9, feature is: the gas in one-level pressure-variable adsorption gas product storage tank 9 is pressed into secondary pressure-swing adsorption concentration system 11 by secondary Antiexplosion air compressor 10, be compressed to enter after secondary gas compression system air accumulator 12 vertical two tower structure pressure-swing absorbers carry out mixed gas denitrogenate emptying after, enter secondary pressure-variable adsorption finished product gas storage tank 14.
Claims (11)
1. a portable low concentration coal-bed gas concentrating unit, it comprises the PLC centralized monitoring system being arranged on mining dull and stereotyped mine car, one-level Antiexplosion air compressor in shell, by high-pressure rubber pipe be linked in sequence gas pretreatment system, one-level pressure-swing adsorption concentration system, is characterised in that: secondary Antiexplosion air compressor, secondary pressure-swing adsorption concentration system that one-level pressure-swing adsorption concentration system is linked in sequence in shell by high-pressure rubber pipe.
2. a kind of portable low concentration coal-bed gas concentrating unit according to claim 1, is characterized in that: gas pretreatment system sequentially comprises that gac oil eliminator, several strainer, several accurate filter, one-level gas compression system air accumulator pipe connect.
3. a kind of portable low concentration coal-bed gas concentrating unit according to claim 1, it is characterized in that: one-level pressure-swing adsorption concentration system comprises that gas pretreatment system pipe connecting is sequentially managed and connects vertical two tower structure pressure-swing absorbers, the one-level pressure-variable adsorption gas product storage tank consist of one-level pressure-swing absorber, in two one-level pressure-swing absorbers, filling carbonaceous molecular sieve absorption agent is nonpolar carbon materials, and production number is CMS-220.
4. a kind of portable low concentration coal-bed gas concentrating unit according to claim 2, it is characterized in that: one-level pressure-swing adsorption concentration system comprises that gas pretreatment system pipe connecting is sequentially managed and connects vertical two tower structure pressure-swing absorbers, the one-level pressure-variable adsorption gas product storage tank consist of one-level pressure-swing absorber, in two one-level pressure-swing absorbers, filling carbonaceous molecular sieve absorption agent is nonpolar carbon materials, and production number is CMS-220.
5. a kind of portable low concentration coal-bed gas concentrating unit according to claim 1, it is characterized in that: one-level pressure-swing adsorption concentration system pipe connecting pipe connects secondary Antiexplosion air compressor, secondary pressure-swing adsorption concentration system comprises that secondary Antiexplosion air compressor pipe connecting is sequentially managed and connects secondary gas compression system air accumulator, the vertical two tower structure pressure-swing absorbers that consist of secondary pressure-swing absorber, secondary pressure-variable adsorption finished product gas storage tank, in two secondary pressure-swing absorbers, filling carbonaceous molecular sieve absorption agent is nonpolar carbon materials, and production number is 3KT-172.
6. a kind of portable low concentration coal-bed gas concentrating unit according to claim 2, it is characterized in that: one-level pressure-swing adsorption concentration system pipe connecting pipe connects secondary Antiexplosion air compressor, secondary pressure-swing adsorption concentration system comprises that secondary Antiexplosion air compressor pipe connecting is sequentially managed and connects secondary gas compression system air accumulator, the vertical two tower structure pressure-swing absorbers that consist of secondary pressure-swing absorber, secondary pressure-variable adsorption finished product gas storage tank, in two secondary pressure-swing absorbers, filling carbonaceous molecular sieve absorption agent is nonpolar carbon materials, and production number is 3KT-172.
7. a kind of portable low concentration coal-bed gas concentrating unit according to claim 3, it is characterized in that: one-level pressure-swing adsorption concentration system pipe connecting pipe connects secondary Antiexplosion air compressor, secondary pressure-swing adsorption concentration system comprises that secondary Antiexplosion air compressor pipe connecting is sequentially managed and connects secondary gas compression system air accumulator, the vertical two tower structure pressure-swing absorbers that consist of secondary pressure-swing absorber, secondary pressure-variable adsorption finished product gas storage tank, in two secondary pressure-swing absorbers, filling carbonaceous molecular sieve absorption agent is nonpolar carbon materials, and production number is 3KT-172.
8. a kind of portable low concentration coal-bed gas concentrating unit according to claim 4, it is characterized in that: one-level pressure-swing adsorption concentration system pipe connecting pipe connects secondary Antiexplosion air compressor, secondary pressure-swing adsorption concentration system comprises that secondary Antiexplosion air compressor pipe connecting is sequentially managed and connects secondary gas compression system air accumulator, the vertical two tower structure pressure-swing absorbers that consist of secondary pressure-swing absorber, secondary pressure-variable adsorption finished product gas storage tank, in two secondary pressure-swing absorbers, filling carbonaceous molecular sieve absorption agent is nonpolar carbon materials, and production number is 3KT-172.
9. according to a kind of portable low concentration coal-bed gas concentrating unit described in claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8, it is characterized in that: first mining dull and stereotyped mine car is loaded with one-level Antiexplosion air compressor, second mining dull and stereotyped mine car is loaded with gas pretreatment system, the 3rd mining dull and stereotyped mine car is loaded with one-level pressure-swing adsorption concentration system, the 4th mining dull and stereotyped mine car is loaded with secondary Antiexplosion air compressor, and the 5th mining dull and stereotyped mine car is loaded with secondary pressure-swing adsorption concentration system.
10. the concentration method of a portable low concentration coal-bed gas concentrating unit, utilize the low concentration coal-bed gas of mine gas drainage system discharge, by PLC centralized monitoring system, control portable low concentration coal-bed gas concentrating unit, after order is carried out one-level gas compression, gas pre-treatment, one-level pressure-swing adsorption concentration, oxygen is emptying, is characterised in that: the one-level pressure-variable adsorption gas product after one-level pressure-swing adsorption concentration sequentially carries out entering secondary pressure-variable adsorption finished product gas storage tank after secondary gas compression, secondary pressure-swing adsorption concentration nitrogen purge.
The concentration method of 11. 1 kinds of portable low concentration coal-bed gas concentrating uniies, utilize the low concentration coal-bed gas of mine gas drainage system discharge, by PLC centralized monitoring system, controlled, low concentration coal-bed gas is pressed into gas pretreatment system by one-level Antiexplosion air compressor, by the oil removing of gac oil eliminator, several strainers, several accurate filters dewater and dedusting after, be pressed into one-level gas compression system air accumulator, gas enters one-level pressure-swing adsorption concentration system, by vertical two tower structure pressure-swing absorbers carry out mixed gas deoxygenation emptying after, gas enters one-level pressure-variable adsorption gas product storage tank, be characterised in that: the gas in one-level pressure-variable adsorption gas product storage tank is pressed into secondary pressure-swing adsorption concentration system by secondary Antiexplosion air compressor, be compressed to enter after secondary gas compression system air accumulator vertical two tower structure pressure-swing absorbers carry out mixed gas denitrogenate emptying after, enter secondary pressure-variable adsorption finished product gas storage tank.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436993A (en) * | 2014-11-27 | 2015-03-25 | 煤炭科学技术研究院有限公司 | Concentration separation method for methane in low-concentration gas |
| CN104449924A (en) * | 2014-11-27 | 2015-03-25 | 煤炭科学技术研究院有限公司 | Concentration separation method for methane in low-concentration coal-bed gas |
| CN104479781A (en) * | 2014-11-27 | 2015-04-01 | 煤炭科学技术研究院有限公司 | Method for concentrating and separating methane from gas within explosive limit |
| CN104745260A (en) * | 2015-04-10 | 2015-07-01 | 常州大学 | Method and equipment for preparing and storing high-quality natural gas from marsh gas |
| CN110342476A (en) * | 2019-05-28 | 2019-10-18 | 苏州海宇气体设备有限公司 | A kind of swing adsorption nitrogen producing apparatus |
| CN111396010A (en) * | 2020-05-08 | 2020-07-10 | 新疆维吾尔自治区煤田地质局煤层气研究开发中心 | Clean energy taking system and method for coal bed gas field |
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| CN201186883Y (en) * | 2007-08-24 | 2009-01-28 | 戚励 | Mobile pressure swing adsorption nitrogen producing apparatus |
| CN201924909U (en) * | 2011-01-11 | 2011-08-10 | 常州大学 | Coalbed gas separation device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436993A (en) * | 2014-11-27 | 2015-03-25 | 煤炭科学技术研究院有限公司 | Concentration separation method for methane in low-concentration gas |
| CN104449924A (en) * | 2014-11-27 | 2015-03-25 | 煤炭科学技术研究院有限公司 | Concentration separation method for methane in low-concentration coal-bed gas |
| CN104479781A (en) * | 2014-11-27 | 2015-04-01 | 煤炭科学技术研究院有限公司 | Method for concentrating and separating methane from gas within explosive limit |
| CN104745260A (en) * | 2015-04-10 | 2015-07-01 | 常州大学 | Method and equipment for preparing and storing high-quality natural gas from marsh gas |
| CN110342476A (en) * | 2019-05-28 | 2019-10-18 | 苏州海宇气体设备有限公司 | A kind of swing adsorption nitrogen producing apparatus |
| CN110342476B (en) * | 2019-05-28 | 2021-08-06 | 苏州海宇分离技术有限公司 | Pressure swing adsorption nitrogen making device |
| CN111396010A (en) * | 2020-05-08 | 2020-07-10 | 新疆维吾尔自治区煤田地质局煤层气研究开发中心 | Clean energy taking system and method for coal bed gas field |
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Application publication date: 20140219 |