CN101362974A - Absorbent for deeply removing carbon dioxide - Google Patents
Absorbent for deeply removing carbon dioxide Download PDFInfo
- Publication number
- CN101362974A CN101362974A CNA2007100586018A CN200710058601A CN101362974A CN 101362974 A CN101362974 A CN 101362974A CN A2007100586018 A CNA2007100586018 A CN A2007100586018A CN 200710058601 A CN200710058601 A CN 200710058601A CN 101362974 A CN101362974 A CN 101362974A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- absorption agent
- mdea
- removing carbon
- hydramine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
-
- 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
Landscapes
- Gas Separation By Absorption (AREA)
Abstract
The invention provides an absorbent with deep removal of carbon dioxide, comprising water and alcohol amine; the improvement thereof is as follows, the alcohol amine is mixed solution of more than two types of alcohol amine, one of which is methyldiethanolamine (MDEA); the concentration by the weight percentage of the mixed alcohol amine solution is 45 percent to 50 percent; the concentration by the weight percentage of the methyldiethanolamine (MDEA) in the mixed alcohol amine solution is 30 percent to 40 percent; the absorbent is used in the deep removal technology of the carbon dioxide of natural gas, the content of the carbon dioxide in purified gas can be reduced to 50ppmv; the energy consumption of a reboiler of a regeneration tower can also be reduced, the degree of degradation and metamorphism of the absorbent can be reduced; the corrosion to a decarbonization system device and a pipeline can further be alleviated, the loss of the absorbent can be simultaneously reduced, the operation cost is low and the effect is satisfactory.
Description
Technical field
The present invention relates to decarburizer, relate in particular to a kind of absorption agent that is applied to the deeply removing carbon dioxide of natural gas conditioning.
Background technology
As clean energy, Sweet natural gas is obtaining application more and more widely.For the ease of transportation, Sweet natural gas usually needs liquefaction, to reduce volume.Need deep cooling to-162 ℃ approximately in the gas deliquescence process, could be transformed into liquid state by gaseous state.For fear of occluding device and the pipeline of occur freezing in the low-temperature liquefaction process, Sweet natural gas must purify before liquefaction, removed sour gas in the Sweet natural gas (as H
2S, CO
2Deng) and water.Because the temperature of natural gas liquefaction is very low, for preventing CO
2Form dry ice occluding device and pipeline at low temperatures, need carry out depth decarburization, make CO
2Content is lower than 50ppmv.
Hydramine method at present commonly used is carried out decarburization, and this processing method through practice for many years, has been updated development since coming out from the thirties in 20th century, has been widely used in the purification of Sweet natural gas, refinery gas etc. at present.
At least include 1 hydroxyl and 1 amido in the molecular structure of alcamine compound.The former effect is the vapour pressure that reduces compound, and increases that it is water-soluble; The latter then provides necessary basicity for the aqueous solution, promotes the absorption to acid gas components.CO in alkanolamine solution and Sweet natural gas, the refinery gas
2Reaction forms carbaminate and carbonate cpds, thereby gas is purified.
The hydramine that is usually used in decarburization in the hydramine method decarbonization process comprises: Monoethanolamine MEA BASF (MEA), diethanolamine (DEA), trolamine (TEA), diisopropanolamine (DIPA) (DIPA), diglycolamine and methyldiethanolamine (MDEA).
Domestic several natural gas liquefaction plants of having gone into operation adopt MEA process to carry out depth decarburization mostly.It is good that MEA process has chemical reactivity, swift characteristics; But the CO in scavenging process in MEA and the unstripped gas
2Can side reaction take place and generate degraded products such as being difficult to Zai Sheng De oxazolidone, cause the partial solvent incapacitation; With carbonylsulfide (COS), dithiocarbonic anhydride (CS
2) reaction then be irreversible, thereby can cause solvent loss and degraded product in solution, to accumulate.Simultaneously, the regeneration temperature of MEA is higher, and not only the energy consumption height also easily causes the regeneration system rapidly seriously corroded, and is very next at high acid gas load.
Because have easily foaming, easily degraded is rotten, energy consumption is high, to the shortcomings such as seriously corroded of equipment and pipeline, MEA process is replaced by MDEA mixing hydramine method just gradually.
MDEA is a tertiary alkanolamine, does not have active H atom in the molecule, thereby chemical stability is good, and it is rotten that solvent is difficult for degraded; And the foaming tendency of solution and corrodibility also all are lower than MEA and DEA; Have advantages such as low, the difficult degraded of energy consumption.Since its alkalescence a little less than, so also there is slow, the not high shortcoming of gas purification degree of speed of response in this method.Find in the practice, if in methyldiethanolamine (MDEA), add a certain amount of Monoethanolamine MEA BASF (MEA) or diethanolamine (DEA) composition alcohol mixture amine solvent, by Monoethanolamine MEA BASF (MEA) or diethanolamine (DEA) energy and CO
2The characteristic that rapid reaction generation carbaminate takes place activates MDEA, thereby can improve MDEA and CO
2Speed of reaction, satisfy the gas sweetening requirement.The mixed amine method is mainly used in the shallow degree decarburization of industries such as gas conditioning, chemical fertilizer at present, because the Decarburized depth difference, the solvent formula of shallow degree decarburization is different.The mixed amine method is used for the Sweet natural gas depth decarburization and has just just begun research and development at home.
MDEA mixing hydramine method decarbonization process, key is rationally to determine the proportioning of MDEA and MEA or DEA in the absorption agent, could satisfy the requirement of natural gas liquefaction project to gas purification degree, reach the effect that cuts down the consumption of energy with running cost simultaneously, this is that the sector needs the constantly important topic of research.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that currently available products exists, and a kind of absorption agent of deeply removing carbon dioxide is provided, and is used for the deeply removing carbon dioxide technology of Sweet natural gas, and carbon dioxide content can be reduced to 50ppmv in the purified gas; And can reduce the energy consumption of regenerator column reboiler, and the degraded metamorphic grade that reduces absorption agent; Can also alleviate the corrosion to decarbonization system equipment and pipeline, can reduce the waste of absorption agent simultaneously, process cost is low, and is satisfactory for result.
The objective of the invention is to realize by following technical scheme.
The absorption agent of deeply removing carbon dioxide of the present invention comprises water and hydramine; It is characterized in that described hydramine is the mixed solution of two or more hydramine, wherein a kind of is methyldiethanolamine (MDEA); The weight percent concentration of alcohol mixture amine aqueous solution is 45% to 50%; The weight percent concentration of methyldiethanolamine in the alcohol mixture amine aqueous solution (MDEA) is 30% to 40%.
The absorption agent of aforesaid deeply removing carbon dioxide is characterized in that, described hydramine mixed solution is the mixed solution of methyldiethanolamine (MDEA) and Monoethanolamine MEA BASF (MEA) or diethanolamine (DEA).
The absorption agent of aforesaid deeply removing carbon dioxide is characterized in that, described water is deionized water.
The preparation method of the absorption agent of deeply removing carbon dioxide of the present invention is characterized in that, two or more hydramine and deionized water at normal temperatures and pressures by certain mass than after mixing, the back that stirs forms the mixed amine solvent.
The application of the absorption agent of deeply removing carbon dioxide of the present invention in purified natural gas.
The beneficial effect of the absorption agent of deeply removing carbon dioxide of the present invention, it is compared with MEA depth decarburization technology with present shallow degree decarbonization process, and the MDEA mixed amine solvent of forming by this proportioning has the following advantages: 1, the purification manner height of Sweet natural gas.The Sweet natural gas carbon dioxide content of handling through absorption agent of the present invention is lower than 50ppmv; 2, because MDEA is weakly alkaline, with CO
2Reactant easily decompose, can reduce the energy consumption of regenerator column reboiler; 3, the degraded metamorphic grade of absorption agent is low, can alleviate the corrosion to decarbonization system equipment and pipeline, and can reduce the waste of absorption agent; 5, process cost is low.
Embodiment
The absorption agent of deeply removing carbon dioxide of the present invention comprises water and hydramine; Its improvements are that hydramine is the mixed solution of two or more hydramine, and wherein a kind of is methyldiethanolamine (MDEA); The weight percent concentration of alcohol mixture amine aqueous solution is 45% to 50%; The weight percent concentration of methyldiethanolamine in the alcohol mixture amine aqueous solution (MDEA) is 30% to 40%.
The absorption agent of deeply removing carbon dioxide of the present invention, wherein the hydramine mixed solution is the mixed solution of methyldiethanolamine (MDEA) and Monoethanolamine MEA BASF (MEA) or diethanolamine (DEA); Water is deionized water.
The preparation method of the absorption agent of deeply removing carbon dioxide of the present invention is characterized in that, two or more hydramine and deionized water at normal temperatures and pressures by certain mass than after mixing, the back that stirs forms the mixed amine solvent.
The application of the absorption agent of deeply removing carbon dioxide of the present invention in purified natural gas.
Embodiment one, the preparation of absorption agent.
Select the corrosion resistant Steel Vessel for use, add 5000 kilograms deionized water earlier, take by weighing 3800 kilograms of MDEA then respectively, 1200 kilograms of DEA; With 3800 kilograms of MDEA, 1200 kilograms of DEA join in 5000 kilograms the deionized water, at room temperature are stirred to mix, and form mixed amine liquid, promptly become absorption agent of the present invention.
Embodiment two, purified natural gas
Utilize an existing cover 25000Sm
3The Sweet natural gas decarbonization device of/h, this device mainly is made up of absorption tower, flash tank, regenerator column, reboiler, recycle pump and air cooler etc., and wherein absorption tower, flash tank, regenerator column, reboiler, recycle pump and air cooler etc. are existing commercially available prod.Infeed the absorption agent of preparing among the embodiment one by recycle pump to the absorption tower, make that the circular flow of absorption agent remains 90000 kilograms/hour in the decarbonization device, feed Sweet natural gas again in decarbonization device, gas supplying pressure is 4500kPaG, temperature is 45 ℃, CO in the Sweet natural gas
2Volume content be 10%, make absorption agent and Sweet natural gas counter current contact, to absorb the carbonic acid gas in the Sweet natural gas, can reduce to below the 50ppmv by 10% through the volume content of the carbon dioxide in natural after purifying.The purification process of Sweet natural gas is a prior art, so no longer give unnecessary details.
Analyze through red, orange, green, blue, yellow (ROGBY), the Sweet natural gas after present embodiment is purified detects, and the content of the carbonic acid gas in the purified gas is about 40ppmv.
The reaction mechanism of the absorption agent of deeply removing carbon dioxide of the present invention is that the reaction mechanism of mixed amine and carbonic acid gas is as follows:
R
2NH+CO
2←→R
2NCOOH
R
2NCOOH+R
2NCH
3+H
2O←→R
2NH+R
2CH
3NH+HCO
3
Because the characteristic of MDEA itself determines its aqueous solution and CO
2Between reaction very slow, can accelerate decarburizing reaction speed by adding primary alconol amine and secondary alcohol amine, improve decarburization efficient.But the concentration with primary alconol amine in the solution and secondary alcohol amine increases, the corresponding increase of regeneration energy consumption, and the trend of amine liquid degraded simultaneously strengthens, and corrodibility strengthens, and therefore should rationally determine the concentration of primary alconol amine and secondary alcohol amine.For depth decarburization technology, it is higher that primary alconol amine and secondary alcohol amine content are increased to 10～15% (wt) decarburization efficient.In order to guarantee the decarburization effect, total amine concentration should not be low excessively, and total amine concentration can reach best decarburization effect and energy consumption about 45%.But total amine concentration is unsuitable too high, because along with the increase of total amine concentration, is dissolved in the CO of water
2Reduce the CO of amine liquid
2The receptivity increase is more and more littler, and strength of solution is too high, and its viscosity rises very fast, and quality transfering rate reduces, and pressure reduction increases, and has influence on the normal running operation on absorption tower.
The advantage of the absorption agent of deeply removing carbon dioxide of the present invention is: (1) regeneration energy consumption is low.MEA process regeneration energy consumption is about 198MJ/kmol CO
2, adopt this absorbent regeneration energy consumption to be about 170MJ/kmol CO
2, the energy consumption reduction is about 15%, obvious energy conservation.(2) the degraded metamorphic grade is low.This absorption agent principal constituent is MDEA, is tertiary alkanolamine, does not have active H atom in the molecule, thereby chemical stability is good, and it is rotten that solvent is difficult for degraded.(3) can alleviate corrosion to decarbonization system equipment and pipeline.According to actual engineering statistics, the corrosion of MEA device is the most serious, and DEA takes second place, and MDEA is smaller.DEA is at temperature and CO
2Chemical degradation takes place when dividing potential drop is all higher easily, and its main degradation products is hydroxyethyl oxazolidone (HEOZD), trihydroxyethyl quadrol (THEED) and dihydroxy ethyl piperazine (DHEP).Because THEED (ethylene diamine derivative) has sequestering action to metal, be corrosion promotor, corrosion of equipment there is certain influence.There is not the thermal destruction product in the MDEA device and the etching problem that causes basically.(4) waste of absorption agent is low.The boiling point of this absorption agent main component MDEA is about 250 ℃, and vapour pressure is less than 1.38Pa (20 ℃), and the boiling point of MEA is about 170 ℃, the about 38Pa of vapour pressure (20 ℃), so the relative volatility of this absorption agent greatly reduces, and can effectively make a price reduction the absorption agent waste.MDEA is difficult for degraded simultaneously, has also reduced the loss of absorption agent.(5) process cost is low.General 15% (m) that adopt of MEA strength of solution the highlyest also is no more than 20%; And the acid gas load also generally can only be got about 0.3 mole (acid gas)/mole (hydramine); This absorbent solution concentration may be up to 50%, and the acid gas load can reach 0.5 mole (acid gas)/mole (hydramine), can significantly reduce the absorption agent internal circulating load, the corresponding power consumption that reduces amine liquid recycle pump.Because be difficult for degraded, waste is little, has reduced the magnitude of recruitment of amine liquid, reduces process cost.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. the absorption agent of a deeply removing carbon dioxide comprises water and hydramine; It is characterized in that described hydramine is the mixed solution of two or more hydramine, wherein a kind of is methyldiethanolamine (MDEA); The weight percent concentration of alcohol mixture amine aqueous solution is 45% to 50%; The weight percent concentration of methyldiethanolamine in the alcohol mixture amine aqueous solution (MDEA) is 30% to 40%.
2. the absorption agent of deeply removing carbon dioxide according to claim 1 is characterized in that, described hydramine mixed solution is the mixed solution of methyldiethanolamine (MDEA) and Monoethanolamine MEA BASF (MEA) or diethanolamine (DEA).
3. the absorption agent of deeply removing carbon dioxide according to claim 1 is characterized in that, described water is deionized water.
4. the preparation method of the absorption agent of a deeply removing carbon dioxide as claimed in claim 1 is characterized in that, two or more hydramine and deionized water at normal temperatures and pressures by certain mass than after mixing, the back that stirs forms the mixed amine solvent.
5. the application of the absorption agent of the described deeply removing carbon dioxide of claim 1 in purified natural gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100586018A CN101362974A (en) | 2007-08-06 | 2007-08-06 | Absorbent for deeply removing carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100586018A CN101362974A (en) | 2007-08-06 | 2007-08-06 | Absorbent for deeply removing carbon dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101362974A true CN101362974A (en) | 2009-02-11 |
Family
ID=40389582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100586018A Pending CN101362974A (en) | 2007-08-06 | 2007-08-06 | Absorbent for deeply removing carbon dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101362974A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143236A (en) * | 2013-03-06 | 2013-06-12 | 胜利油田胜利勘察设计研究院有限公司 | Decarburization solution for recovering and removing carbon dioxide gas from carbon dioxide flooding produced gas of oilfield |
| CN102049173B (en) * | 2009-11-09 | 2013-07-17 | 中国石油化工股份有限公司 | Method for deeply removing carbon dioxide from gas mixture |
| CN103357248A (en) * | 2013-08-02 | 2013-10-23 | 北京交通大学 | Composite absorbent for capturing carbon dioxide in flue gas based on membrane contactor and use method thereof |
| CN105413396A (en) * | 2015-10-21 | 2016-03-23 | 中石化节能环保工程科技有限公司 | Layered absorbent for trapping CO2 in tail gas |
| CN105536437A (en) * | 2016-01-19 | 2016-05-04 | 北京化工大学 | MDEA compound absorbent for acid gas separation and separation method |
| CN105642089A (en) * | 2014-11-10 | 2016-06-08 | 江苏庆峰国际环保工程有限公司 | Absorption process for CO2 by using organic amine solution |
| CN105709566A (en) * | 2016-01-19 | 2016-06-29 | 北京化工大学 | Method using high-viscosity absorbent to separate CO2 based on dissolution assisting effect |
| CN106311149A (en) * | 2015-06-17 | 2017-01-11 | 中国石油化工股份有限公司 | Absorbent used for natural gas decarburization |
| CN109420410A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司 | The absorbent of organic sulfur in a kind of efficient removal acidic mixed gas |
| CN109893964A (en) * | 2019-03-25 | 2019-06-18 | 辽宁石油化工大学 | A kind of absorption storage CO2Method |
| CN112143536A (en) * | 2019-06-27 | 2020-12-29 | 中石化南京化工研究院有限公司 | Absorption liquid for corrosion prevention of decarburization system in natural gas |
| CN113134282A (en) * | 2021-05-10 | 2021-07-20 | 重庆丰淼生态环境科技有限责任公司 | Flue gas decarbonizing agent |
-
2007
- 2007-08-06 CN CNA2007100586018A patent/CN101362974A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049173B (en) * | 2009-11-09 | 2013-07-17 | 中国石油化工股份有限公司 | Method for deeply removing carbon dioxide from gas mixture |
| CN103143236A (en) * | 2013-03-06 | 2013-06-12 | 胜利油田胜利勘察设计研究院有限公司 | Decarburization solution for recovering and removing carbon dioxide gas from carbon dioxide flooding produced gas of oilfield |
| CN103357248A (en) * | 2013-08-02 | 2013-10-23 | 北京交通大学 | Composite absorbent for capturing carbon dioxide in flue gas based on membrane contactor and use method thereof |
| CN105642089A (en) * | 2014-11-10 | 2016-06-08 | 江苏庆峰国际环保工程有限公司 | Absorption process for CO2 by using organic amine solution |
| CN106311149A (en) * | 2015-06-17 | 2017-01-11 | 中国石油化工股份有限公司 | Absorbent used for natural gas decarburization |
| CN106311149B (en) * | 2015-06-17 | 2019-02-22 | 中国石油化工股份有限公司 | A kind of absorbent for natural gas decarbonization |
| CN105413396A (en) * | 2015-10-21 | 2016-03-23 | 中石化节能环保工程科技有限公司 | Layered absorbent for trapping CO2 in tail gas |
| CN105709566A (en) * | 2016-01-19 | 2016-06-29 | 北京化工大学 | Method using high-viscosity absorbent to separate CO2 based on dissolution assisting effect |
| CN105709566B (en) * | 2016-01-19 | 2018-08-03 | 北京化工大学 | One kind detaching CO based on hydrotropy effect application high viscosity absorbent2Method |
| CN105536437B (en) * | 2016-01-19 | 2018-10-23 | 北京化工大学 | A kind of MDEA composite absorbers and separation method for sour gas separation |
| CN105536437A (en) * | 2016-01-19 | 2016-05-04 | 北京化工大学 | MDEA compound absorbent for acid gas separation and separation method |
| CN109420410A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司 | The absorbent of organic sulfur in a kind of efficient removal acidic mixed gas |
| CN109893964A (en) * | 2019-03-25 | 2019-06-18 | 辽宁石油化工大学 | A kind of absorption storage CO2Method |
| CN112143536A (en) * | 2019-06-27 | 2020-12-29 | 中石化南京化工研究院有限公司 | Absorption liquid for corrosion prevention of decarburization system in natural gas |
| CN113134282A (en) * | 2021-05-10 | 2021-07-20 | 重庆丰淼生态环境科技有限责任公司 | Flue gas decarbonizing agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101362974A (en) | Absorbent for deeply removing carbon dioxide | |
| CA1090098A (en) | Removal of co.sub.2 and/or h.sub.2s and/or cos from gases containing these constituents | |
| JP4865530B2 (en) | Mixed absorbent for carbon dioxide separation | |
| CN100493673C (en) | Compound decarburization solution for recovering carbon dioxide in gas mixture | |
| CN101745289B (en) | Method for selectively removing H2S from gas mixture containing CO2 | |
| US5609840A (en) | Method for the removal of hydrogen sulfide present in gases | |
| CN101822932B (en) | Composite decarbonization solvent for eliminating carbon dioxide in natural gases | |
| CN101143286B (en) | Method for removing COS from acid airflow | |
| CN101612509A (en) | Capture the composite decarbonizing solution of carbon dioxide in the mist | |
| CN1035103C (en) | Method of removing carbon dioxide from mix gas | |
| CN102423620B (en) | Compound decarbonizing solvent for removing carbon dioxide from biogas | |
| CN112546840B (en) | Carbon dioxide absorbent and carbon dioxide absorption method thereof | |
| JP2006240966A (en) | Method for recovering carbon dioxide in exhaust gas by absorption and releasing | |
| CN112023662B (en) | Composite desulfurizer for purifying petroleum and natural gas | |
| CN102284227A (en) | Method for capturing carbon dioxide in mixed gas by using composite decarbonizing solution | |
| CN102284229A (en) | Composite decarbonization solution for capturing carbon dioxide in mixed gas | |
| CN102974203A (en) | Novel absorbent for capturing and separating carbon dioxide | |
| CN100584432C (en) | From acid gas stream, remove the absorbent and the method for mercaptan | |
| CN102658000A (en) | Method and absorption solvent for removing sulfur dioxide from flue gas | |
| AU2016202116B2 (en) | Acidic gas absorbing agent, method for removing acidic gas and apparatus for removing acidic gas | |
| CN101816878A (en) | Novel high-efficient compound decarbonization solvent | |
| CN102794095B (en) | Application of tri-(2-aminoethyl) amine as carbon dioxide absorbent | |
| CN100384511C (en) | Method for separating carbon dioxide dissolvent from gas mixture | |
| JP2016000381A (en) | Acidic gas treatment method and acidic gas treatment device | |
| CN1962032A (en) | Solvent and method for simultaneous removal of hydrogen sulphide and carbon dioxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090211 |