CN101596391A - The pressure swing adsorption and staged concentrated method of a kind of low concentration gas - Google Patents
The pressure swing adsorption and staged concentrated method of a kind of low concentration gas Download PDFInfo
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- CN101596391A CN101596391A CNA2009100625276A CN200910062527A CN101596391A CN 101596391 A CN101596391 A CN 101596391A CN A2009100625276 A CNA2009100625276 A CN A2009100625276A CN 200910062527 A CN200910062527 A CN 200910062527A CN 101596391 A CN101596391 A CN 101596391A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/20—Capture or disposal of greenhouse gases of methane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses the pressure swing adsorption and staged concentrated method of a kind of low concentration gas, the steps include: that the preliminary treatment of (1) Device in Gas: A. carries out dedusting to Device in Gas; B. dewater, before advancing pressure-swing absorber, establish a drier, remove the moisture in the Device in Gas; C. remove CO
2, between drier and pressure-swing absorption apparatus, implement pre-filtering, CO
2Kinetic diameter be 0.33nm, it is less to compare, and is CO with the pore carbon molecular sieve
2Adsorbent, CO
2Discharge from methane and chain hydrocarbon with high selectivity; (2) the pressure swing adsorption and staged of dry Device in Gas concentrates: low-concentration methane divides 2～6 grades, avoids the gas explosion limit 5～16%, and exchange 2～4 suction-Tuo Ta continuous concentration are to high concentration methane, and suction-Tuo Tanei fills 1～2 kind of CH efficiently
4The gas adsorbent.Methane recovery surpasses 90%, methane concentration surpasses 95%, has high heating value, has reduced the discharging of hot room effect methane gas, and is energy-conservation, reduce discharging.
Description
Technical field
The present invention relates to the separation and purification technical field of industrial gasses.More specifically relate to the pressure swing adsorption and staged concentrated method of a kind of low concentration gas, be applicable to low concentration gas gas simmer down to high concentration methane gas, product-methane of the present invention is as industrial chemicals, domestic gas, motor vehicle fuel, can save a large amount of energy, reduce hot room effect methane (carbon dioxide 21 times) gas purging simultaneously, had a global Significance for Environment of energy-conservation economy, reduction of discharging.
Background technology
Coal mine mash gas (title coal bed gas) is the associated gas in colliery, and the coal bed gas main component is: methane (CH
4), carbon dioxide (CO
2), carbon monoxide (CO), ethene (C
2H
4), propane (C
2H
6), wherein CO, C
2H
4, C
2H
6Three kinds of gas in coal bed gas content seldom, its typical component following (representing): methane (CH with percentage by volume
4): 20-60%, nitrogen (N
2): 50-60%, oxygen+argon gas (O
2+ Ar): 12-18%, water (H
2O) saturated.Every meter
3Coal can produce 15～30 meters of Device in Gas
3, expect discharge of methane amount in 2010 and will increase to 28Mt, wherein 70% is from CH
4Concentration is lower than in 1% the mine return, and the coal bed gas methane utilization rate of the U.S. only is 27%.
And the methane of the present coal mine associated Device in Gas 70-90% of China discharges because of the no value of concentration low (＜20%), and this part Device in Gas is because CH
4Gas concentration is low, and the oxygen content height is in close proximity to CH
4The explosion ratio of gas (5-16%) scope or just at CH
4In the explosion ratio scope of gas, therefore be difficult to direct utilization.China is as big coal country, and gas resources is very abundant; Coal seam tolerance in China 2000m reaches 35 tcms (being equivalent to 45,000,000,000 tons of mark coals, 35,000,000,000 tons of mark oil), and is suitable with land conventional gas resource." safety regulations in coal mine " regulation, methane concentration was not less than 30% when gas drainage under suction utilized, and avoided the gas explosion limit for safety, was lower than at 25% o'clock and did not utilize and discharge.2002, it was 43.1 hundred million m that there is the gas emission of 193 mines of 53 Mining Group in the whole nation
3, mash gas extraction amount 11.461 hundred million m
3
The annual gas emission in Huainan City, Anhui Province is 500,000,000 m
3(pure CH
4, down with), mash gas extraction amount 200,000,000 m
3, utilize 0.4 hundred million m
3, utilize 3 kinds of modes: combustion gas, generating (3.5 degree electricity/m
3CH
4), boiler combustion gas, overall utilization＜10%, the common situation of representing China coal bed gas methane to utilize.
Coal bed gas not only resource potential is huge, and of many uses, can be used as Domestic Gas, industrial fuel and industrial chemicals usefulness gas, motor vehicle fuel and generating, and it is current just in the technology of active development wherein utilizing coal bed gas generating.If the whole nation is with m in every year 43.1 hundred million
380% the utilizing of gas, be equivalent to annual 4680000 t of increasing mark coal.
CH
4Influence accounts for 15～20%, CH to the atmosphere greenhouse effects
4Be CO
221 times of molecule greenhouse effects are 7 times of carbon dioxide to the depletion of the ozone layer ability, with CH
4Be discharged in the atmosphere, caused the serious waste of resource on the one hand, cause greenhouse effects on the other hand.Therefore, rationally carry CH in the low dense gas of dense utilization
4Have energy-conservation and the environmental protection double meaning, press for a kind of technology that can safely low concentration gas gas enrichment method be become high concentration gas.
Summary of the invention
The objective of the invention is to be to provide a kind of low concentration gas pressure swing adsorption and staged concentrated method, a kind of methane gas of high concentration is provided.Making methane recovery 〉=90%, can obtain the high concentration methane of variable concentrations (〉=25%), concentration can be 〉=and 95%; Method of the present invention can make low-calorie coal mine mash gas of giving it up be enriched to the high concentration methane gas that has high heating value and extensive use is arranged.
The present invention is by earlier carrying out preliminary treatment to Device in Gas, adopts transformation absorption and concentration technique step by step then, utilizes many component (CH of gas
4, N
2, O
2, CO
2, H
2O etc.) the pressure-dependent principle of the adsorbance on adsorbent, transformation absorption concentrates step by step, divide 2～6 grades, exchange the enrichment method of 2～4 suction-Tuo Ta continuous concentration from low-concentration methane to high concentration methane, mix with low-concentration methane gas to improve the method for methane gas concentration with the high concentration methane gas, avoid the gas explosion limit (5～16%), make in the gas that methane recovery surpasses 90%, methane concentration surpasses 95%.
The pressure swing adsorption and staged concentrated method of a kind of low concentration gas the steps include:
(1) preliminary treatment of Device in Gas:
A, dedusting:
Carry out dedusting with the gas dust removal filter, dust is for CH in protection, maintenance and the subsequent process of equipment
4The regeneration of gas adsorbent has a significant impact, and must establish a gas dust removal filter and earlier Device in Gas be carried out dedusting, reduces the corrosion to equipment, improves separating effect; Described gas dust removal filter is a sack cleaner, by filtering material, grit is filtered with ash-laden gas, and filtering material captures coarse dust mainly by the inertial collision effect, capture grain dust mainly by diffusion and sieving actoion, the dust layer of filtrate also has certain filtration.
B, the Device in Gas after the dedusting is dewatered:
In order to obtain dry methane rich product gas, before advancing pressure-swing absorber, establish MAD low-grade fever regeneration adsorption dehumifier, to remove the moisture in the Device in Gas.The drier that described drier uses can be pore ball-type silica gel, any one or its two to the three kinds of combinations in the blue glue of ball-type, the aluminum oxide molecular sieve.
C, removing carbon dioxide (CO
2):
Coal mine gas is carried out before gas concentrates, must be carbon dioxide (CO
2) from coal mine gas, remove, between drier and pressure-swing absorption apparatus, implement pre-filtering, (the CO of carbon dioxide
2) kinetic diameter is 0.33nm, it is less to compare, and is CO with the pore carbon molecular sieve
2Adsorbent, CO
2Discharge from methane and chain hydrocarbon with high selectivity, described pressure-swing absorption apparatus is for dividing 2～6 grades, the pressure-swing absorption apparatus of exchange 2～4 suction-Tuo Ta.
(2), the pressure swing adsorption and staged of dry Device in Gas concentrates:
Low-concentration methane divides 2～6 grades, mixes with low-concentration methane gas to improve the method for methane gas concentration with the high concentration methane gas, avoid the gas explosion limit (5～16%), exchange 2～4 suction-Tuo Ta continuous concentration methane, obtain the high concentration methane of variable concentrations (〉=25%), concentration can be 〉=and 95%, suction-Tuo Tanei fills 1～2 kind of CH efficiently
4The gas adsorbent.The CH of described suction-Tuo Tanei
4The gas adsorbent can be any one or its combination of two kinds in zeolite molecular sieve, the carbon molecular sieve.
To divide 4 grades of simmer down to examples:
A, transformation absorption for the first time:
Transformation absorption is big with adsorbent adsorption capacity to adsorbate under high pressure (adsorptive pressure), and low pressure (desorption pressures) down adsorption capacity little be characterized as foundation, alternately switch circulation technology by what select that absorption and desorption and regeneration two stages form.
Sky branch technology based on present maturation, when utilizing the adsorbent pressurization, gas (methane) in the absorption mist, the air that is not adsorbed will be discharged from the adsorption tower outlet, when being decompressed to 0.1～0.02MPa negative pressure, the gas that is adsorbed is discharged desorb subsequently, concentrates the product gas-methane that becomes high concentration step by step, then, the adsorption capacity of adsorbent is restored again with the method that vacuumizes.The CH of described suction-Tuo Tanei
4The gas adsorbent can be any one or its combination of two kinds in zeolite molecular sieve, the carbon molecular sieve.
Dry Device in Gas through transformation absorption for the first time after, concentration less than 5% methane gas.
B, mixing, avoid the gas explosion limit:
Being 30～95% methane gas with concentration mixes to improve the method for methane gas concentration, improves steps A product gas concentration to 20%～35%, thereby effectively avoid the gas explosion limit with steps A product (concentration less than 5% methane gas) gas;
C, transformation absorption for the second time:
After the product gas (concentration is 20%～35% methane gas) of step B carried out the transformation absorption second time, methane concentration was increased to 25%～50%;
D, transformation absorption for the third time:
After the product gas (concentration is 25%～50% methane gas) of step C carried out transformation absorption for the third time, methane concentration was increased to 40%～85%;
E, the 4th transformation absorption:
After the product gas (concentration is 40%～85% methane gas) of step D carried out the 4th transformation absorption, methane concentration was increased to 95% or greater than 95%
Described low-concentration methane gas concentration is less than 5% methane gas.
Described CH
4The pressure swing adsorption technique parameter is as follows: the pressure of pressurization absorption is controlled in 0.8～2.4MPa scope, and the pressure of depressurization desorption is controlled in 0.1～0.02MPa range of negative pressure, 4～25 ℃ of temperature.
Be used to realize the pressure swing adsorption and staged concentrated technology of low concentration gas of the object of the invention, it is characterized in that:, before advancing pressure-swing absorber, can Device in Gas not removed water pretreatment if required high concentration methane product gas allows to contain saturation moisture.
Be used to realize the pressure swing adsorption and staged concentrated technology of low concentration gas of the object of the invention, it is characterized in that: can select corresponding classification to concentrate according to the methane gas concentration requirement, obtain the methane gas in the finite concentration scope.
Be used to realize the pressure swing adsorption and staged concentrated technology of low concentration gas of the object of the invention, it is characterized in that: methane recovery surpasses 90%, can obtain the high concentration methane of variable concentrations (〉=25%), and concentration can be 〉=and 95%.The invention has the beneficial effects as follows:
(1) the present invention adopts transformation absorption and classification concentration technique, concentrates CH
4, make low-calorie coal mine mash gas of giving it up be enriched to the methane-rich gas that has high heating value and extensive use is arranged, realize the comprehensive utilization of low concentration extraction coal bed gas;
(2) the present invention can make methane recovery 〉=90%, can obtain the high concentration methane of variable concentrations (〉=25%), concentration can 〉=95%;
(3) product-methane of the present invention can be used as industrial chemicals, domestic gas, motor vehicle fuel etc., saves a large amount of energy, has reduced hot room effect methane (CO simultaneously
221 times) gas purging.
(4) the present invention fully utilizes coal bed gas resource, has important economy and Significance for Environment for improvement and optimization energy resource structure, guarantee Safety of Coal Mine Production, reduction Coal Production cost, minimizing atmosphere pollution.
The specific embodiment
Embodiment 1:
The pressure swing adsorption and staged concentrated method of a kind of low concentration gas the steps include:
(1), the preliminary treatment of Device in Gas:
A, dedusting: earlier Device in Gas is carried out dedusting with the gas dust removal filter:
Dust is for CH in protection, maintenance and the subsequent process of equipment
4The regeneration of gas adsorbent has a significant impact, establish-the gas dust removal filter is first to carry out dedusting to Device in Gas, reduces the corrosion to equipment, improves separating effect; Described CH
4The gas adsorbent is to be any one or its combination of two kinds in zeolite molecular sieve, the carbon molecular sieve.Described gas dust removal filter is a sack cleaner, by filtering material, grit is filtered with ash-laden gas, and filtering material captures coarse dust mainly by the inertial collision effect, capture grain dust mainly by diffusion and sieving actoion, the dust layer of filtrate also has certain filtration.
B, the Device in Gas after the dedusting is dewatered:
In order to obtain dry methane rich product gas, before advancing pressure-swing absorber, establish MAD low-grade fever regeneration adsorption dehumifier, to remove the moisture in the Device in Gas.The drier that described drier uses can be pore ball-type silica gel, any one or its two to the three kinds of combinations in the blue glue of ball-type, the aluminum oxide molecular sieve.
C, removing carbon dioxide (CO
2):
Coal mine gas is carried out before gas concentrates, must be carbon dioxide (CO
2) from coal mine gas, remove, between drier and pressure-swing absorption apparatus, implement pre-filtering, CO
2Kinetic diameter be 0.33nm, it is less to compare, and is CO with the pore carbon molecular sieve
2Adsorbent, CO
2Discharge from methane and chain hydrocarbon with high selectivity, described pressure-swing absorption apparatus is for dividing 2～6 grades, the pressure-swing absorption apparatus of exchange 2～4 suction-Tuo Ta.
(2), the pressure swing adsorption and staged of dry Device in Gas concentrates:
Transformation absorption with in zeolite molecular sieve, the carbon molecular sieve any one or its be combined as CH
4The gas adsorbent, the pressure of pressurization absorption is 0.9 or 1.2 or 1.8 or 2.3MPa, and the pressure of depressurization desorption is 0.09 or 0.08 or 0.06 or the 0.03MPa negative pressure, and temperature is 4 or 10 or 15 or 20 ℃, divide 3 grades to concentrate, concentration is 40 or 50 or 60 or 70 or 75 or 80 or 88 or 95% methane gas.Be specially:
A, transformation absorption for the first time:
Dry Device in Gas is through after transformation is adsorbed for the first time, and methane concentration is 2 or 3%;
B, flushing, avoid the gas explosion limit:
With 30 or 40 or 50 or 60% methane gas rinsing step A product gas, improve steps A product gas concentration to 20 or 30 or 40 or 50%, thereby effectively avoid the gas explosion limit;
C, transformation absorption for the second time:
After the product gas of step B carried out the transformation absorption second time, methane concentration was increased to 25 or 40 or 50 or 60%;
D, transformation absorption for the third time:
After the product gas of step C carried out transformation absorption for the third time, methane concentration was increased to 40 or 50 or 60 or 70 or 75 or 80 or 88 or 95%, promptly got concentration and be 40 or 50 or 60 or 70 or 75 or 80 or 88 or 95% methane gas.
Embodiment 2:
Coal mine mash gas passes through dedusting, dewaters, removes CO
2Preliminary treatment (with example 1), transformation absorption with in zeolite molecular sieve, the carbon molecular sieve any one or its be combined as CH
4The gas adsorbent, the pressure of pressurization absorption is 0.8 or 1.2 or 1.8 or 2.0MPa, and the pressure of depressurization desorption is 0.1 or 0.08 or 0.06 or the 0.04MPa negative pressure, and temperature is 4 or 8 or 15 or 20 ℃, divide 4 grades to concentrate, concentration is 50 or 60 or 70 or 85 or 90 or 95 or 96% methane gas.Be specially:
A, transformation absorption for the first time:
Dry Device in Gas is through after transformation is adsorbed for the first time, and methane concentration is 2 or 3%;
B, flushing, avoid the gas explosion limit:
With 30 or 40 or 50 or 60% methane gas rinsing step A product gas, improve steps A product gas concentration to 20 or 30 or 40 or 50%, thereby effectively avoid the gas explosion limit;
C, transformation absorption for the second time:
After the product gas of step B carried out the transformation absorption second time, methane concentration was increased to 25 or 40 or 50 or 60%;
D, transformation absorption for the third time:
After the product gas of step C carried out transformation absorption for the third time, methane concentration was increased to 40 or 50 or 60 or 70%;
E, the 4th transformation absorption:
After the product gas of step D carried out the 4th transformation absorption, methane concentration was increased to 50 or 60 or 70 or 85 or 90 or 95 or 96%, promptly got concentration and be 50 or 60 or 70 or 85 or 90 or 95 or 96% methane gas.
Embodiment 3:
Coal mine mash gas passes through dedusting, dewaters, removes CO
2Preliminary treatment (with example 1), transformation absorption with in zeolite molecular sieve, the carbon molecular sieve any one or its be combined as CH
4The gas adsorbent, the pressure of pressurization absorption is 0.8 or 1.5 or 2.0 or 2.4MPa, and the pressure of depressurization desorption is 0.1 or 0.08 or 0.06 or the 0.04MPa negative pressure, and temperature is 5 or 10 or 18 or 25 ℃, divide 5 grades to concentrate, concentration is 60 or 70 or 80 or 90 or 95 or 95.5 or 97% methane gas.Be specially:
A, transformation absorption for the first time:
Dry Device in Gas is through after transformation is adsorbed for the first time, and methane concentration is 2 or 3%;
B, flushing, avoid the gas explosion limit:
With 30 or 40 or 50 or 60% methane gas rinsing step A product gas, improve steps A product gas concentration to 20 or 30 or 40 or 50%, thereby effectively avoid the gas explosion limit;
C, transformation absorption for the second time:
After the product gas of step B carried out the transformation absorption second time, methane concentration was increased to 25 or 35 or 45 or 60%;
D, transformation absorption for the third time:
After the product gas of step C carried out transformation absorption for the third time, methane concentration was increased to 45 or 50 or 65 or 70%;
E, the 4th transformation absorption:
After the product gas of step D carried out the 4th transformation absorption, methane concentration was increased to 50 or 60 or 70 or 85% or greater than 85%;
F, the 5th transformation absorption:
After the product gas of step e carried out the 5th transformation absorption, methane concentration was increased to 60 or 70 or 80 or 90 or 95 or 95.5 or 97%, promptly got concentration and be 60 or 70 or 80 or 90 or 95 or 95.5 or 97% methane gas.
Embodiment 4
Coal mine mash gas passes through dedusting, dewaters, removes CO
2Preliminary treatment (with example 1), transformation absorption with in zeolite molecular sieve, the carbon molecular sieve any one or its be combined as adsorbent, the pressure of pressurization absorption is 0.9 or 1.5 or 1.8 or 2.2MPa, the pressure of depressurization desorption is 0.1 or 0.09 or 0.07 or the 0.05MPa negative pressure, temperature is 6 or 12 or 15 or 24 ℃, divide 6 grades to concentrate, obtain concentration and be 65 or 75 or 85 or 95 or 96 or 96.5% methane gas.Be specially:
A, transformation absorption for the first time:
Dry Device in Gas is through after transformation is adsorbed for the first time, and methane concentration is 2 or 3%;
B, flushing, avoid the gas explosion limit:
With 30 or 40 or 50 or 60% methane gas rinsing step A product gas, improve steps A product gas concentration to 20 or 30 or 40 or 50%, thereby effectively avoid the gas explosion limit;
C, transformation absorption for the second time:
After the product gas of step B carried out the transformation absorption second time, methane concentration was increased to 25 or 35 or 45 or 55%;
D, transformation absorption for the third time:
After the product gas of step C carried out transformation absorption for the third time, methane concentration was increased to 45 or 50 or 60 or 72%;
E, the 4th transformation absorption:
After the product gas of step D carried out the 4th transformation absorption, methane concentration was increased to 55 or 60 or 70 or 83%;
F, the 5th transformation absorption:
After the product gas of step e carried out the 5th transformation absorption, methane concentration was increased to 60 or 70 or 80 or 90%;
G, the 6th transformation absorption:
After the product gas of step F carried out the 5th transformation absorption, methane concentration was increased to 65 or 75 or 85 or 95 or 96 or 96.5%, promptly obtained concentration and be 65 or 75 or 85 or 95 or 96 or 96.5% methane gas.
Claims (4)
1, the pressure swing adsorption and staged concentrated method of a kind of low concentration gas the steps include:
(1) preliminary treatment of Device in Gas:
A, dedusting are carried out dedusting with the gas dust removal filter, establish a gas dust removal filter and earlier Device in Gas are carried out dedusting, and described gas dust removal filter is a sack cleaner, and by filtering material, grit is filtered with ash-laden gas;
B, the Device in Gas after the dedusting is dewatered,, before advancing pressure-swing absorber, establish MAD low-grade fever regeneration adsorption dehumifier, to remove the moisture in the Device in Gas in order to obtain dry methane rich product gas;
C, removing carbon dioxide, coal mine gas carry out must removing carbon dioxide from coal mine gas before gas concentrates, and implement pre-filtering between drier and pressure-swing absorption apparatus, and the kinetic diameter of carbon dioxide is 0.33nm, is CO with the pore carbon molecular sieve
2Adsorbent, CO
2Discharge from methane and chain hydrocarbon, described pressure-swing absorption apparatus is for dividing 2～6 grades, the pressure-swing absorption apparatus of exchange 2～4 suction-Tuo Ta;
(2), the pressure swing adsorption and staged of dry Device in Gas concentrates:
Low-concentration methane divides 2～6 grades, be that 30～95% methane gas is mixed with low-concentration methane gas to improve the method for methane gas concentration with concentration, avoid the gas explosion limit 5～16%, exchange 2～4 suction-Tuo Ta continuous concentration are to high concentration methane, and suction-Tuo Tanei fills 1～2 kind of CH
4The gas adsorbent;
The drier that described drier uses is pore ball-type silica gel, any one or its two to the three kinds of combinations in the blue glue of ball-type, the aluminum oxide molecular sieve.
2, the pressure swing adsorption and staged concentrated method of a kind of low concentration gas according to claim 1 is characterized in that: the CH of described suction-Tuo Tanei
4The gas adsorbent is any one or its combination in zeolite molecular sieve, the carbon molecular sieve.
3, the pressure swing adsorption and staged concentrated method of a kind of low concentration gas according to claim 1 is characterized in that: described high concentration methane product gas contains saturation moisture, Device in Gas is not removed water pretreatment before advancing pressure-swing absorber.
4, the pressure swing adsorption and staged concentrated method of a kind of low concentration gas according to claim 1 is characterized in that: described CH
4The pressure swing adsorption technique parameter is as follows: the pressure of pressurization absorption is controlled in 0.8～2.4MPa scope, and the pressure of depressurization desorption is controlled in 0.1～0.02MPa range of negative pressure, and temperature is 4～25 ℃.
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| CN101955825A (en) * | 2010-08-18 | 2011-01-26 | 煤炭科学研究总院 | Method for concentrating and separating methane in deoxidized coal bed gas |
| CN101732946B (en) * | 2009-12-31 | 2012-09-05 | 四川省达科特能源科技有限公司 | Production method for pressure-swing adsorption concentration of methane in gas |
| CN101732947B (en) * | 2010-01-13 | 2013-05-01 | 北京科技大学 | Method for safe adsorption and enrichment of gas with low concentration |
| CN103301711A (en) * | 2013-07-03 | 2013-09-18 | 中煤科工集团重庆研究院 | Multi-tower type ventilation air methane temperature swing adsorption concentration device |
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| CN111748390A (en) * | 2020-07-02 | 2020-10-09 | 煤炭科学技术研究院有限公司 | Produced gas CO2Separation and purification process |
| CN112943186A (en) * | 2021-02-07 | 2021-06-11 | 中国矿业大学 | Pressure swing adsorption concentration and yield increasing system and method for extracted gas in coal mine |
| CN113041998A (en) * | 2021-03-18 | 2021-06-29 | 安徽理工大学 | Preparation method and application of anti-static carbon molecular sieve |
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| CN104998516A (en) * | 2015-07-10 | 2015-10-28 | 天津大学 | Method for oxygen removal and methane concentration by pressure swing adsorption of oxygen-bearing coal mine methane |
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- 2009-06-05 CN CN2009100625276A patent/CN101596391B/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732946B (en) * | 2009-12-31 | 2012-09-05 | 四川省达科特能源科技有限公司 | Production method for pressure-swing adsorption concentration of methane in gas |
| CN101732947B (en) * | 2010-01-13 | 2013-05-01 | 北京科技大学 | Method for safe adsorption and enrichment of gas with low concentration |
| CN101955825B (en) * | 2010-08-18 | 2013-06-12 | 煤炭科学研究总院 | Method for concentrating and separating methane in deoxidized coal bed gas |
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