CN103638782A - Carbon dioxide gas absorbing and trapping medium and using method thereof - Google Patents
Carbon dioxide gas absorbing and trapping medium and using method thereof Download PDFInfo
- Publication number
- CN103638782A CN103638782A CN201310648248.4A CN201310648248A CN103638782A CN 103638782 A CN103638782 A CN 103638782A CN 201310648248 A CN201310648248 A CN 201310648248A CN 103638782 A CN103638782 A CN 103638782A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- ionic liquid
- trapping medium
- absorbs
- dioxide gas
- 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
Abstract
The invention discloses a carbon dioxide gas absorbing and trapping medium. The carbon dioxide gas absorbing and trapping medium is characterized by being functional ionic liquid which consists of anions and cations at a molar ratio of 1:1, wherein the cations and the anions are shown as chemical formulae. The ionic liquid without obviously saturated vapor pressure can be regenerated for use through absorption saturation and simple heating, so that the problem of secondary pollution caused by the adoption of a conventional absorbent is solved.
Description
Technical field
The present invention relates to a kind of carbon dioxide and absorb trapping medium and using method thereof, the absorbing carbon dioxide of efficient, high selectivity, reaches the object of Purge gas.
Background technology
Global warming, sea level rise has threatened the mankind's sustainable development.And greenhouse gases carbon dioxide is considered to climate warming, one of main arch-criminal that sea level rise.The reduction of discharging of greenhouse gases carbon dioxide has become the pressing problem that international community generally faces.The Chinese government is solemn commitment, during 12, the discharge capacity of the carbon dioxide of per GDP will be reduced to 40% left and right.Reach this target, carbon dioxide separation and the trapping technique of just necessary Development of Novel.
Carbon dioxide eliminating technology mainly contains solvent absorption, pressure swing adsorption method, membrane separation process and membranes, cryogenic fractionation etc. at present.
So-called solvent absorption, uses alkaline solution exactly, is generally NaOH, front calcium oxide and sodium carbonate etc., and absorbing carbon dioxide in the situation that of normal temperature or pressurization is translated into the form of carbonate deposition.Although this method is simple, invests little instant effect, it has obvious drawback, is exactly easily to produce a large amount of solid refuses, has the problem of very serious secondary pollution.
The method of pressure-variable adsorption and film separation, is a kind of novel method developing rapidly in recent years, has efficiently, fast, is applicable to the separated feature with trapping traces of carbon dioxide.But because its investment is larger, the field that can only have relatively high expectations to gas concentration lwevel for food (production carbonated beverage), the bottled gas of carbon dioxide etc. at present.And the method for low-temperature fractionation is applicable to carrying out carbon dioxide as impurity separation, utterly useless for trapping.
Chinese patent (application number 201110038201.7) discloses a kind of ionic additive of organic amine carbon-dioxide absorbent, adopts organic amine to carry out absorbing carbon dioxide gas.The ionic additive of organic amine carbon-dioxide absorbent, it is 0.01%-5%Rb[UO that the ionic additive of described organic amine carbon-dioxide absorbent contains mass percent
2seO
4(OH) H
2o] and the mass percent Cu that is 0.01%-5%
2(CO
3) (OH)
2; The ionic additive of this organic amine carbon-dioxide absorbent is combined and is used with not using the organic amine of additive to compare with organic amine, and its oxidation rate reduces approximately 50%.But adopt organic amine as the absorbent of carbon dioxide, used volatile organic solvent, Ministry of environment is friendly.
Chinese patent (patent No. ZL.92108508.7) discloses a kind of carbon-dioxide absorbent and preparation method thereof, belongs to the solid absorbent of adsorbed gas.It take expanded perlite as carrier, mixes also vacuum dehydration make with sodium hydroxide solution, and the percentage by weight of perlite and NaOH is 20-4-% and 60-80%.Although it is strong that absorbent of the present invention has the loading capability of holding, the advantage that absorption efficiency is high, capacity is large, vapour lock is little, easy to prepare, cost is low and nontoxic, color shows obviously, can extensive use in purification for gas and gas analysis, but can bring equally the secondary pollution problem that the rear carbonate solid producing produces that absorbs, in addition, the method is also not suitable for large-scale use.
Given this, urgent need will find that new carbon dioxide is efficient, the absorption process of high selectivity, eliminates all drawbacks that said method brings.By Patents, retrieve, yet there are no the ionic liquid of related structure in the present invention for the absorption of carbon dioxide.
Ionic liquid, as its name suggests, the compound being formed by zwitterion completely exactly.Different zwitterions can be combined into miscellaneous ionic liquid.By selecting different zwitterions, or directly introducing specific functional group modifies, character to ionic liquid, as fusing point, viscosity, hydrophobicity are adjusted, meet different needs, designing can be to sour gas, and particularly carbon dioxide has the ionic liquid of higher selective and solubility.
Ionic liquid does not almost have volatile feature to make it compare and have inborn advantage with traditional absorbent solution, and this is mainly reflected in absorption process, and ionic liquid can not enter gas phase, brings thus the advantage of two aspects.On the one hand, ionic liquid can not bring loss because of the volatilization of self; On the other hand, in the gas that purified gas and desorb obtain, can not contain absorbing medium yet.By our experimental studies have found that, this novel ion liquid is Physical Absorption process to the absorption main process of sour gas.We are the means in conjunction with experiment by computer simulation, have designed sour gas, and particularly carbon dioxide etc. has the novel ion liquid of good adsorption and solubility property, for atmospheric cleaning and dusty gas reduction of discharging provide new thinking.
Summary of the invention
The invention provides a kind of carbon dioxide and absorb trapping medium and using method thereof, it can be efficient, the absorbing carbon dioxide gas of high selectivity, and it is selectively good to have, large, the reusable feature of adsorbance.
Carbon dioxide absorbs a trapping medium, it is characterized in that, described carbon dioxide absorbs the ionic liquid that trapping medium is functionalization, and it is comprised of according to mol ratio 1:1 anion, cation:
Wherein, described cation is:
Described anion is:
A kind of carbon dioxide absorbs the using method of trapping medium, it is characterized in that, comprise that carbon dioxide absorbs and the regeneration of example liquid, it is 10～45 ℃ that described carbon dioxide absorbs temperature, the dividing potential drop of absorbing carbon dioxide is 0.02～0.1MPa, and soak time is 30～60 minutes; The regeneration of the example liquid of telling comprises that heating desorption is attached, and heating-up temperature is 80～100 ℃, and the recovery time is 60～80 minutes.
Preferably, applicant finds, in desorption process, can pass into nitrogen to accelerate the process of ionic liquid regeneration.
Compared with prior art, beneficial effect of the present invention is:
1) the present invention uses the ionic liquid without obvious saturated vapor pressure, after absorption is saturated, just can makes ionic liquid regenerate apply mechanically, avoided the secondary pollution problem of using traditional absorbent to cause through simple heating.
2) the present invention does not use volatility organic basic absorbent, thereby has avoided harm that equipment and operator ' s health are brought.
4) ionic liquid can repeat to apply mechanically, and has reduced cost, for industrialization in the future lays a solid foundation.
The specific embodiment
Experimental technique: by certain carbon dioxide at a certain temperature by packing the Drexel bottle (carbon dioxide of different dividing potential drops adopt pass into inert nitrogen realize) of certain ionic liquid into, the time of staying of adjusting absorption process by adjusting gas flow rate, carbon dioxide is fully contacted with ionic liquid.By the weightening finish of ionic liquid, calculate the quality (amount of substance) of absorption sulfur dioxide.Desorb is under rising temperature (80 ℃～100 ℃) condition, passes into the regeneration that nitrogen is realized adsorbent ionic liquid.
Embodiment 1-6
Under 10 ℃ of conditions, according to above-mentioned experimental procedure, under different partial pressure of carbon dioxide conditions, control soak time 60 minutes, respectively ionic liquid is carried out to carbon dioxide absorption experiment, result is as follows:
Note: uptake refers to the quality of thing and the ratio of ionic liquid amount of substance of the sulfur dioxide that ionic liquid adsorbs, lower same.
Embodiment 7-12
According to above-mentioned experimentation, we have investigated ionic liquid is the experimental result of different temperatures under 0.1MPa condition in sulfur dioxide dividing potential drop, sees the following form:
Embodiment 13-18
According to above-mentioned experiment condition, we investigate ionic liquid and repeat power of regeneration, pass into nitrogen 60 minutes, to adsorbing the ionic liquid of saturated (dividing potential drop 0.1MPa), carry out desorption experiment, and experimental result is as follows:
Note: sulfur dioxide residual quantity refers to the quality of the sulfur dioxide that ionic liquid adsorbs and the ratio of ionic liquid amount of substance.
Embodiment 19-28
We have investigated the reusable performance of ionic liquid, will absorb saturated ionic liquid 1, and at 10 ℃, dividing potential drop is under 0.1MPa condition, according to above-mentioned experimental procedure, repeats adsorption experiment, and experimental result is as follows:
By above-mentioned experimental result, visible ionic liquid has good repeat performance, reuses 10 times, and absorbent properties have no obvious reduction, have good prospect capable of being industrialized.
Claims (3)
1. carbon dioxide absorbs a trapping medium, it is characterized in that, described carbon dioxide absorbs the ionic liquid that trapping medium is functionalization, and it is comprised of according to mol ratio 1:1 anion, cation:
Wherein, described cation is:
Described anion is:
2. the carbon dioxide of claim 1 absorbs the using method of trapping medium, it is characterized in that, comprise that carbon dioxide absorbs and the regeneration of example liquid, it is 10～45 ℃ that described carbon dioxide absorbs temperature, the dividing potential drop of absorbing carbon dioxide is 0.02～0.1MPa, and soak time is 30～60 minutes; The regeneration of the example liquid of telling comprises that heating desorption is attached, and heating-up temperature is 80～100 ℃, and the recovery time is 60～80 minutes.
3. carbon dioxide according to claim 2 absorbs the using method of trapping medium, it is characterized in that, passes into nitrogen in regenerative process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310648248.4A CN103638782A (en) | 2013-12-04 | 2013-12-04 | Carbon dioxide gas absorbing and trapping medium and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310648248.4A CN103638782A (en) | 2013-12-04 | 2013-12-04 | Carbon dioxide gas absorbing and trapping medium and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103638782A true CN103638782A (en) | 2014-03-19 |
Family
ID=50244150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310648248.4A Pending CN103638782A (en) | 2013-12-04 | 2013-12-04 | Carbon dioxide gas absorbing and trapping medium and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103638782A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831010A (en) * | 2014-03-25 | 2014-06-04 | 厦门大学 | Method for capturing carbon dioxide at low temperature by solid magnesium hydroxide |
| CN105727694A (en) * | 2016-04-07 | 2016-07-06 | 浙江大学 | Method for improving amino functional carbon capture through spatial synergistic effect |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08332338A (en) * | 1995-06-06 | 1996-12-17 | Ishikawajima Harima Heavy Ind Co Ltd | Absorption column |
| CN101700454A (en) * | 2009-11-25 | 2010-05-05 | 南京大学 | Green carbon dioxide absorbent |
| CN102126968A (en) * | 2011-01-11 | 2011-07-20 | 中国科学院过程工程研究所 | Alkaline ionic liquid as well as preparation and application thereof |
| CN102531991A (en) * | 2011-12-23 | 2012-07-04 | 中国科学院过程工程研究所 | Novel multi-amino functionalized ionic liquid and preparation method thereof |
| CN102827037A (en) * | 2012-09-11 | 2012-12-19 | 绍兴文理学院 | Tetramethylguanidine proton ionic liquid and application thereof in trapping of carbon dioxide |
| US20130164199A1 (en) * | 2010-09-03 | 2013-06-27 | Marty Lail | Regenerable solvent mixtures for acid-gas separation |
-
2013
- 2013-12-04 CN CN201310648248.4A patent/CN103638782A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08332338A (en) * | 1995-06-06 | 1996-12-17 | Ishikawajima Harima Heavy Ind Co Ltd | Absorption column |
| CN101700454A (en) * | 2009-11-25 | 2010-05-05 | 南京大学 | Green carbon dioxide absorbent |
| US20130164199A1 (en) * | 2010-09-03 | 2013-06-27 | Marty Lail | Regenerable solvent mixtures for acid-gas separation |
| CN102126968A (en) * | 2011-01-11 | 2011-07-20 | 中国科学院过程工程研究所 | Alkaline ionic liquid as well as preparation and application thereof |
| CN102531991A (en) * | 2011-12-23 | 2012-07-04 | 中国科学院过程工程研究所 | Novel multi-amino functionalized ionic liquid and preparation method thereof |
| CN102827037A (en) * | 2012-09-11 | 2012-12-19 | 绍兴文理学院 | Tetramethylguanidine proton ionic liquid and application thereof in trapping of carbon dioxide |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831010A (en) * | 2014-03-25 | 2014-06-04 | 厦门大学 | Method for capturing carbon dioxide at low temperature by solid magnesium hydroxide |
| CN103831010B (en) * | 2014-03-25 | 2016-04-06 | 厦门大学 | A kind of solid hydrogen magnesia low temperature catches the method for carbon dioxide |
| CN105727694A (en) * | 2016-04-07 | 2016-07-06 | 浙江大学 | Method for improving amino functional carbon capture through spatial synergistic effect |
| CN105727694B (en) * | 2016-04-07 | 2018-05-29 | 浙江大学 | A kind of method that the trapping of amino functional carbon is improved using spatial cooperation effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10960343B2 (en) | Methods and systems for performing chemical separations | |
| CN108658042B (en) | A kind of LED-MOCVD processing procedure tail gas Quan Wencheng pressure-variable adsorption full constituent recycling and reusing method | |
| US11001543B2 (en) | Separation methods and systems for oxidative coupling of methane | |
| Bacsik et al. | Selective separation of CO2 and CH4 for biogas upgrading on zeolite NaKA and SAPO-56 | |
| CN102439123B (en) | There is the application of zeolite character crystalline microporous material in natural gas processing process of RHO structure | |
| KR102361888B1 (en) | Polyamine-added metal-organic frameworks for carbon dioxide separation | |
| WO2012033986A3 (en) | Non-aqueous amine scrubbing for removal of carbon dioxide | |
| CN104263442B (en) | A kind of method utilizing ionic liquid desulfurization from natural gas to take off lighter hydrocarbons | |
| RU2011119098A (en) | METHOD AND INSTALLATION FOR NEUTRALIZING ACIDITY OF GAS MIXTURES | |
| WO2010088054A2 (en) | Hybrid carbon dioxide separation process and system | |
| US11027235B2 (en) | Method and apparatus for reagent recovery in a flue gas processing system | |
| WO2013084402A1 (en) | Method and apparatus for separating hydrogen sulfide and hydrogen production system using same | |
| WO2014124035A1 (en) | Methods of separating molecules | |
| US9358530B2 (en) | Carbon dioxide adsorbent including zeolite and methods for preparing the same | |
| CN103071364B (en) | System and method for trapping carbon dioxide from flue gases in multi-stage manner | |
| JP2011167629A (en) | Method and apparatus for separating hydrogen gas | |
| CN103638782A (en) | Carbon dioxide gas absorbing and trapping medium and using method thereof | |
| CN108607530B (en) | Desulfurizing agent, preparation method thereof and method for deeply removing sulfur dioxide | |
| CN103418164A (en) | Method for removing oxygen-containing compound in hydrocarbon stream | |
| JP2012071290A (en) | Method and apparatus for recovering carbon dioxide | |
| CN103991845B (en) | A kind of method of hydrogen production process conversion gas carbon dioxide removal | |
| KR100470959B1 (en) | Absorbent for the removal of carbon dioxide in hollow fiber membrane contactor | |
| CN106544062A (en) | Synthesis gas integrating method for purifying | |
| CN104096453A (en) | High-selectivity decarbonization absorbent adopting physical method | |
| CN111097255A (en) | Special use for CO2Absorption separation functional ionic liquid nonaqueous system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140319 |