CN102527192A - Carbon dioxide absorbent containing ionic liquid - Google Patents
Carbon dioxide absorbent containing ionic liquid Download PDFInfo
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- CN102527192A CN102527192A CN2011104379846A CN201110437984A CN102527192A CN 102527192 A CN102527192 A CN 102527192A CN 2011104379846 A CN2011104379846 A CN 2011104379846A CN 201110437984 A CN201110437984 A CN 201110437984A CN 102527192 A CN102527192 A CN 102527192A
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- Prior art keywords
- absorbent
- amine
- carbon dioxide
- ionic liquid
- ion liquid
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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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- 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
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
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- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to an absorbent containing ionic liquid for capturing carbon dioxide, and belongs to the technical field of fine chemical industry. The absorbent contains 5-50wt% of ionic liquid, 5-50wt% of alcohol amine and 0-90wt% of water, wherein the anion is an anion with an amino acid structure, and the structural formula of the amino acid is H2N-R-COOH (R = CnH2n, n = 1-5); the cation is an organic amine salt cation, or organic alcohol amine cation; the alcohol amine is monoethanol amine, diethanol amine, triethanol amine, N-methyldiethanolamine, or 2-amino-2-methyl-1-propyl alcohol; and an inhibitor and an antioxidant can be added, the use methods and use amounts of the inhibitor and the antioxidant are known by the technical personnel in the field. The absorbent has the advantages of good stability, difficulty in volatilizing, low toxicity, designable structure, strong carbon dioxide absorption capability, low regeneration energy consumption and the like, thereby having good prospects in the field of large-scale carbon dioxide capture.
Description
Technical field
The invention belongs to the fine chemical technology field, relate to the ion liquid absorbent that contains of carbon dioxide in a kind of captured gas mixture.
Background technology
Global warming is more and more serious, and the carbon dioxide of industrial discharge is considered to cause the main cause of climate warming.Therefore, the capture of carbon dioxide has become " focus " problem that the whole world is paid close attention to.The trapping technique of carbon dioxide comprises solvent absorption, absorption method, low temperature processing, membrane separation process etc., and the process energy consumption is high, equipment corrosion is serious, the absorption liquid rate of deterioration is fast, high volatility causes problems such as absorbent loss but exist at present.Therefore, need to develop method and material efficient, eco-friendly capturing carbon dioxide.
The molten salt system that under room temperature or nearly room temperature, is in a liquid state that ionic liquid is made up of specific organic cation and organic or inorganic anion; It is extremely low to have good heat endurance and chemical stability, vapour pressure; Advantage such as not volatile, that toxicity is very low, structure can design is one type of novel green medium.In recent years, the research of adopting ionic liquid to capture sour gas more and more receives people's attention.[Bates E D, Mayton R D, Ntai I, Davis J H J. CO such as Bates for example
2Capture by a Task-Specific Ionic Liquid. J. Am. Chem. Soc., 2002,124 (6): 926-927] synthesized and contained amino (NH
2) functionalized ion liquid 1-(3-the aminopropyl)-3-butyl imidazole tetrafluoroborate of functional group, find that it is to CO
2Absorption more do not contain-NH
2The conventional ion liquid of functional group significantly improves.Zhang etc. adopt [Zhang J M, Zhang S J, Dong K, Zhang Y Q, Shen Y Q, the Lu X M. Supported Absorption of CO such as aqueous solution Zhang of amino acid ion liquid
2By Tetrabutylphosphonium; Amino Acid Ionic Liquids. Chem. Eur. J.; 2006; 12:4021-4026] developed tetrabutyl phosphine amino acid ion liquid [P4444] [AA], discover that the pure ionic liquid of 1mol is 0.5mol to the saturated absorption amount of carbon dioxide.
Research shows; Ionic liquid can effectively solve problems such as the solvent volatility that exists in the present collecting carbonic anhydride technology is strong, the absorption liquid rate of deterioration is fast; But; It is high still to exist ion liquid cost, absorbs and regenerability problem such as be difficult to be optimized simultaneously, has limited the large-scale application of ionic liquid in the collecting carbonic anhydride field greatly.
Summary of the invention
The objective of the invention is to propose a kind of be used for captured gas mixture carbon dioxide novel and contain ion liquid absorbent.
Absorbent of the present invention has good stable property, not volatile, advantage such as toxicity is low, structure can design.Simultaneously, absorbent contains one or more hydramine, can when guaranteeing the carbon dioxide high absorbent capacity, effectively reduce the regenerative process energy consumption, reduces capturing process cost, therefore has good prospect in extensive collecting carbonic anhydride field.
The present invention contains ion liquid carbon-dioxide absorbent, and comprising ion liquid content is 5 ~ 50wt%, hydramine 5 ~ 50wt%, water 0 ~ 90wt%.
Usually, absorbent according to the invention also comprises corrosion inhibiter and antioxidant, and its usage and consumption are known in those skilled in the art.
Described ionic liquid can be the anion with amino acid structure, and amino acid whose structural formula is H
2N-R-COOH (R=C
nH
2n, n=1 ~ 5); Also can be organic amine salt cation, organic alcohol amine cationoid; Hydramine is monoethanolamine, diethanol amine, triethanolamine, N methyldiethanol amine, 2-amino-2-methyl-1-propanol; And ionic liquid and hydramine all be not limited to above-mentioned several kinds, can be wherein any one or multiple.
Described organic amine salt cation can be primary amine, secondary amine or tertiary amine.
The temperature that the present invention contains ion liquid absorbent capturing carbon dioxide is that 223K ~ 523K, pressure are in 80 atmospheric pressure.
The present invention contains ion liquid absorbent and can be used for capturing the carbon dioxide in the various gas mixtures such as flue gas, natural gas, various synthesis gas, vehicle exhaust.
Make carbon dioxide in the air-flow through containing ion liquid absorbent and contact and be removed with of the present invention, any known equipment in this area may be used to absorb, regenerate and other step.
The specific embodiment
The present invention explains with following instance, but the present invention is not limited to following embodiment.Before and after not breaking away from, under the scope of said aim, change and implement to be included in the technical scope of the present invention.
Embodiment 1
37.537g glycine (0.5mol) is mixed the back to wherein adding N methyldiethanol amine 59.6g (0.5mol) with 36.570g n-butylamine (0.5mol), be settled to 1000mL with deionized water.Measure absorbent 10mL as in the absorption bottle, absorption bottle is as in 30 ℃ of waters bath with thermostatic control, in absorption bottle, feeds CO with the speed of 10mL/min
2Gas, weighing absorption bottle weight at set intervals, absorption bottle weight no longer change to can be considered to absorb and reach balance.The final CO that is absorbed
2Be 0.308g.In 80 ℃ of 30min that regenerate down, regeneration rate is 47.7% with the system after absorbing.
Embodiment 2
37.537g glycine (0.5mol) is mixed the back to wherein adding 2-amino-2-methyl-1-propanol 44.57g (0.5mol) with 36.570g n-butylamine (0.5mol), be settled to 1000mL with deionized water.Measure absorbent 10mL as in the absorption bottle, absorption bottle is as in 30 ℃ of waters bath with thermostatic control, in absorption bottle, feeds CO with the speed of 10mL/min
2Gas, weighing absorption bottle weight at set intervals, absorption bottle weight no longer change to can be considered to absorb and reach balance.The final CO that is absorbed
2Be 0.385g.In 80 ℃ of regeneration down, regeneration rate is 65.4% with the system after absorbing.
Embodiment 3
22.522g glycine (0.3mol) is dissolved in the 200mL deionized water; To wherein adding 30.357g triethylamine (0.3mol); With system stirring reaction 24h under room temperature; To wherein adding N methyldiethanol amine 83.44g (0.7mol), adopt deionized water to be settled to 1000 mL system then.Measure absorbent 10mL as in the absorption bottle, absorption bottle is as in 30 ℃ of waters bath with thermostatic control, in absorption bottle, feeds CO with the speed of 10mL/min
2Gas, weighing absorption bottle weight at set intervals, absorption bottle weight no longer change to can be considered to absorb and reach balance.The final CO that is absorbed
2Be 0.277g.In 80 ℃ of regeneration down, regeneration rate is 45.1% with the system after absorbing.
Claims (10)
1. contain ion liquid carbon-dioxide absorbent, it is characterized in that it is 5 ~ 50wt% that said absorbent comprises ionic liquid content, hydramine 5 ~ 50wt%, water 0 ~ 90wt%.
2. absorbent according to claim 1 is characterized in that absorbent comprises corrosion inhibiter and antioxidant.
3. absorbent according to claim 1 is characterized in that said ionic liquid is the anion with amino acid structure, and amino acid whose structural formula is H
2N-R-COOH, wherein R=C
nH
2n, n=1 ~ 5.
4. absorbent according to claim 1, it is characterized in that said ionic liquid be organic amine salt cation, organic alcohol amine cationoid any one or multiple.
5. absorbent according to claim 4 is characterized in that said organic amine salt cation is primary amine, secondary amine or tertiary amine.
6. absorbent according to claim 4 is characterized in that said hydramine is one or more of monoethanolamine, diethanol amine, triethanolamine, N methyldiethanol amine, 2-amino-2-methyl-1-propanol.
7. according to the said absorbent of claim 1, it is characterized in that this pressure that contains ion liquid absorbent capturing carbon dioxide is in 80 atmospheric pressure.
8. according to the said absorbent of claim 1, it is characterized in that this temperature that contains ion liquid absorbent capturing carbon dioxide is 223K ~ 523K.
9. according to the said absorbent of claim 1, it is characterized in that this contains the carbon dioxide that ion liquid absorbent is used for capturing flue gas, natural gas, various synthesis gas or vehicle exhaust.
10. according to claim 1 or 9 said absorbents, it is characterized in that this contains ion liquid absorbent through contact the carbon dioxide of removing wherein with air-flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104379846A CN102527192A (en) | 2011-12-23 | 2011-12-23 | Carbon dioxide absorbent containing ionic liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104379846A CN102527192A (en) | 2011-12-23 | 2011-12-23 | Carbon dioxide absorbent containing ionic liquid |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265988A (en) * | 2013-06-15 | 2013-08-28 | 青岛新奥胶城燃气有限公司 | Method for purifying natural gas |
| CN105561757A (en) * | 2014-10-14 | 2016-05-11 | 中国石油化工股份有限公司 | Ionic liquid activated post-combustion carbon dioxide capture solvent |
| CN105561734A (en) * | 2014-10-14 | 2016-05-11 | 中国石油化工股份有限公司 | Thermosensitive amine group carbon dioxide absorbent |
| CN106512657A (en) * | 2016-12-18 | 2017-03-22 | 上海镁锶钡实业有限公司 | Inorganic waste gas absorbent and method for treating inorganic waste gas in air |
| CN106854478A (en) * | 2015-12-08 | 2017-06-16 | 中国石油化工股份有限公司 | A kind of absorbing liquid containing ionic liquid activator |
| EP3673973A1 (en) | 2018-12-24 | 2020-07-01 | Dalian University of Technology | Decarbonization solution for capturing carbon dioxide in mixed gas and capable of reducing impact of hygroscopicity |
| CN113491934A (en) * | 2020-04-08 | 2021-10-12 | 中石化南京化工研究院有限公司 | Ionic liquid carbon dioxide absorbent |
| CN113731489A (en) * | 2021-09-10 | 2021-12-03 | 湖南大学 | Ionic liquid catalyst for regeneration of carbon dioxide-rich amine solution |
| CN113813769A (en) * | 2021-10-15 | 2021-12-21 | 西南石油大学 | Method and device for removing organic sulfur in gas by using compound ionic liquid desulfurizer |
| CN115364623A (en) * | 2022-06-08 | 2022-11-22 | 郑州大学 | Efficient CO capture 2 The renewable ionic liquid compound solvent |
| WO2023066400A1 (en) * | 2021-10-22 | 2023-04-27 | 中国石油化工股份有限公司 | Carbon dioxide absorption liquid and method for capturing carbon dioxide from fuel gas |
| CN116199248A (en) * | 2023-03-24 | 2023-06-02 | 中国科学院兰州化学物理研究所 | Method for preparing nano calcium carbonate by recycling carbon dioxide absorbent |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700454A (en) * | 2009-11-25 | 2010-05-05 | 南京大学 | Green carbon dioxide absorbent |
-
2011
- 2011-12-23 CN CN2011104379846A patent/CN102527192A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700454A (en) * | 2009-11-25 | 2010-05-05 | 南京大学 | Green carbon dioxide absorbent |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265988A (en) * | 2013-06-15 | 2013-08-28 | 青岛新奥胶城燃气有限公司 | Method for purifying natural gas |
| CN105561757A (en) * | 2014-10-14 | 2016-05-11 | 中国石油化工股份有限公司 | Ionic liquid activated post-combustion carbon dioxide capture solvent |
| CN105561734A (en) * | 2014-10-14 | 2016-05-11 | 中国石油化工股份有限公司 | Thermosensitive amine group carbon dioxide absorbent |
| CN106854478A (en) * | 2015-12-08 | 2017-06-16 | 中国石油化工股份有限公司 | A kind of absorbing liquid containing ionic liquid activator |
| CN106512657A (en) * | 2016-12-18 | 2017-03-22 | 上海镁锶钡实业有限公司 | Inorganic waste gas absorbent and method for treating inorganic waste gas in air |
| EP3673973A1 (en) | 2018-12-24 | 2020-07-01 | Dalian University of Technology | Decarbonization solution for capturing carbon dioxide in mixed gas and capable of reducing impact of hygroscopicity |
| CN113491934A (en) * | 2020-04-08 | 2021-10-12 | 中石化南京化工研究院有限公司 | Ionic liquid carbon dioxide absorbent |
| CN113731489A (en) * | 2021-09-10 | 2021-12-03 | 湖南大学 | Ionic liquid catalyst for regeneration of carbon dioxide-rich amine solution |
| CN113813769A (en) * | 2021-10-15 | 2021-12-21 | 西南石油大学 | Method and device for removing organic sulfur in gas by using compound ionic liquid desulfurizer |
| CN113813769B (en) * | 2021-10-15 | 2023-10-20 | 西南石油大学 | Method and device for removing organic sulfur in gas by using compound ionic liquid desulfurizing agent |
| WO2023066400A1 (en) * | 2021-10-22 | 2023-04-27 | 中国石油化工股份有限公司 | Carbon dioxide absorption liquid and method for capturing carbon dioxide from fuel gas |
| CN115364623A (en) * | 2022-06-08 | 2022-11-22 | 郑州大学 | Efficient CO capture 2 The renewable ionic liquid compound solvent |
| CN116199248A (en) * | 2023-03-24 | 2023-06-02 | 中国科学院兰州化学物理研究所 | Method for preparing nano calcium carbonate by recycling carbon dioxide absorbent |
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Application publication date: 20120704 |