CN103357249B - Compound organic absorbent used for flue-gas CO2-removal technology and preparation method thereof - Google Patents
Compound organic absorbent used for flue-gas CO2-removal technology and preparation method thereof Download PDFInfo
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- CN103357249B CN103357249B CN201310338755.8A CN201310338755A CN103357249B CN 103357249 B CN103357249 B CN 103357249B CN 201310338755 A CN201310338755 A CN 201310338755A CN 103357249 B CN103357249 B CN 103357249B
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- compound organic
- organic absorbent
- absorbent
- butyl
- piperazine
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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
- 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
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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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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention relates to a compound organic absorbent used for a flue-gas CO2-removal technology and a preparation method thereof. The compound organic absorbent is a mixture of an imidazole glycinate ionic liquid and piperazine. The compound organic absorbent comprises a 1-butyl-3-methyl imidazole glycinate ionic liquid, the piperazine and water. The mass concentration of the compound organic absorbent is 10-40%, wherein the mass ratio of the 1-butyl-3-methyl imidazole glycinate ionic liquid to the piperazine is 0.1-1:1. The compound organic absorbent has advantages of easily available raw materials, simple operation conditions, small use amount, high removal efficiency, and the like.
Description
Technical field
The present invention relates to a kind of compound organic absorbent and preparation method thereof, particularly relating to a kind of for removing CO in boiler smoke
2compound organic absorbent, belong to boiler technology field.
Background technology
The Global Environmental Problems attracted people's attention most is now the rising of Global Temperature, and this problem is mainly because a large amount of combustion of fossil fuels increases CO in air
2concentration caused by, wherein, thermal power plant is main emission source.Due to CO
2discharge that the greenhouse effects that cause cause such as unusual weather conditions, sea level rise, the migrating and the series of environmental problems such as the extinction of species of vegetation, therefore its reduction of discharging has become the topic of attracting attention in the world, CO
2reduce discharging very urgent.Coal-fired flue-gas is CO
2most important source, to flue gas CO
2carrying out effective trapping will to CO
2realizing of emission reduction targets is significant.Meanwhile, CO
2be again a kind of important carbon resource, therefore, be separated from coal-fired flue-gas and reclaim CO
2there is great society and Significance for Environment.
At present, the chemical absorption method based on alkanolamine solution is the CO uniquely realizing commercial applications
2capture method, this process is the absorption-desorption cycle of carbon dioxide in acid-base reaction based on reversible chemical absorption.The method has that absorptive capacity is large, capture rate advantages of higher, can obtain food-class CO
2and recycle, but the problem that existence is invested and energy consumption is excessive, and cause absorbent to lose because organic solvent volatilization in desorption process.Therefore the alternative solvent of hydramine is selected to be the focus studied at present.
Summary of the invention
Technical problem to be solved by this invention be overcome prior art defect, provide a kind of for removing flue gas CO
2the compound organic absorbent of technique, described absorbent has that raw material is commonly easy to get, simple operating conditions, consumption are few, removal efficiency advantages of higher.In addition, the present invention also will provide the preparation method of this absorbent further.
Technical problem of the present invention is realized by following technical scheme.
A kind of flue gas that is used for removes CO
2the compound organic absorbent of technique, described compound organic absorbent is the mixture of 1-butyl-3-methylimidazole glycinate, piperazine and water.
Above-mentioned compound organic absorbent, in the mixture of described 1-butyl-3-methylimidazole glycinate, piperazine and water composition, the mass ratio of 1-butyl-3-methylimidazole glycinate and piperazine is (0.1 ~ 1): 1, preferred 1:1; The mass concentration of described compound organic absorbent is 10 ~ 40%.
Above-mentioned absorbent, the mass concentration of described 1-butyl-3-methylimidazole glycinate is 1 ~ 20%.
One is prepared and is above-mentionedly removed CO for flue gas
2the method of the compound organic absorbent of technique, it carries out as follows:
In mass ratio (0.1 ~ 1): 1 takes imidazoles glycine ionic liquid and piperazine, is dissolved in deionized water under 30 ~ 50 DEG C of conditions by glycine ionic liquid and piperazine, stir, mix, obtain the compound organic absorbent that mass concentration is 10 ~ 40%.
When compound organic absorbent of the present invention uses, can reactor be added to, under certain process conditions, effectively can be absorbed the CO in flue gas
2, thus realize CO
2remove.By analyzing spray column entrance and exit CO
2concentration, calculate its removal efficiency (absorptivity), removal efficiency can reach 95%.
Compared with the existing technology, tool of the present invention has the following advantages:
(1) raw sorbent of the present invention is common is easy to get, simple operating conditions.
(2) decarburization Be very effective of the present invention, effectively can improve CO
2removal efficiency, mention CO
2the rate of recovery.
(3) use of the present invention can not have a negative impact to decarbonization system, improves decarburization efficiency, thus realize CO under the prerequisite not changing original operating condition
2recycling.
(4) composite absorber consumption of the present invention is few, and efficiency is high, absorbent can not be caused to lose, have promotional value.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, to make the present invention of those skilled in the art comprehend.
The preparation of the compound organic absorbent of embodiment 1
During absorbent preparation, take 1-butyl-3-methylimidazole glycinate 12.5g and piperazine 12.5g, i.e. mass ratio 1:1, is dissolved in 100mL deionized water for stirring, mixing by the two under 30 DEG C of conditions, can obtain compound organic absorbent.The mass concentration percentage of this absorbent is the mass concentration of 20%, 1-butyl-3-methylimidazole glycinate is 10%.
The preparation of the compound organic absorbent of embodiment 2
During absorbent preparation, 1-butyl-3-methylimidazole glycinate 1g and piperazine 10g, i.e. mass ratio 0.1:1, the two is dissolved in 100mL deionization under 50 DEG C of conditions, stirs, mix, obtain compound organic absorbent.The mass concentration percentage of compound absorbent is the mass concentration of 10%, 1-butyl-3-methylimidazole glycinate is 1%.
The preparation of the compound organic absorbent of embodiment 3
During absorbent preparation, take 1-butyl-3-methylimidazole glycinate 22g and piperazine 44g, i.e. mass ratio 0.5:1, the two is dissolved in 100mL deionized water under 40 DEG C of preparation temperature conditions, stir, mix, obtain compound organic absorbent.The mass concentration percentage of compound absorbent is the mass concentration of 40%, 1-butyl-3-methylimidazole glycinate is 13%.
The preparation of the compound organic absorbent of embodiment 4
During absorbent preparation, take 1-butyl-3-methylimidazole glycinate 21g and piperazine 21g, i.e. mass ratio 1:1, the two is dissolved in 100mL deionized water under 40 DEG C of preparation temperature conditions, stir, mix, obtain compound organic absorbent.The mass concentration percentage of compound absorbent is the mass concentration of 30%, 1-butyl-3-methylimidazole glycinate is 15%.
The use of the compound organic absorbent of embodiment 5
The compound organic absorbent of embodiment 1 gained is added reactor, stirs.Utilize smoke gas on-line monitor to system entry and exit CO
2concentration detects, and calculates decarburization efficiency.Known according to calculating, absorbent is to CO
2absorption efficiency increase along with the increase of time, the absorptivity in 5 ~ 10min is more than 90%.
The use of the compound organic absorbent of embodiment 6
The compound organic absorbent of embodiment 1 gained is added reactor, stirs.Utilize smoke gas on-line monitor to system entry and exit CO
2concentration detects, and calculates decarburization efficiency.Detect respectively at the absorption temperature of 30 ~ 50 DEG C, known by calculating, absorb temperature to CO
2absorption efficiency have considerable influence, and low temperature is more conducive to CO
2absorption, absorption efficiency can up to 95%.
In identical temperature, under the conditions such as concentration of absorbing by this compound organic absorbent to CO
2absorption and other several organic absorbents contrast.Find that this absorbent is compared to MDEA(N-methyl diethanolamine) and AMP (2-amino-2-methyl-1-propanol) have the higher absorption efficiency (CO of MDEA under the same terms
2absorption efficiency is the CO of 67.3%, AMP
2absorption efficiency is 68.5%), and the absorption that reaches capacity within a short period of time.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (6)
1. one kind removes CO for flue gas
2the compound organic absorbent of technique, it is characterized in that, described compound organic absorbent is the mixture of 1-butyl-3-methylimidazole glycinate, piperazine and water.
2. compound organic absorbent according to claim 1, is characterized in that, the mass ratio of described 1-butyl-3-methylimidazole glycinate and piperazine is 0.1 ~ 1:1.
3. compound organic absorbent according to claim 2, is characterized in that, the mass ratio of described 1-butyl-3-methylimidazole glycinate and piperazine is 1:1.
4. compound organic absorbent according to claim 3, is characterized in that, the mass concentration of this compound organic absorbent is 10 ~ 40%.
5. compound organic absorbent according to claim 4, is characterized in that, the mass concentration of described 1-butyl-3-methylimidazole glycinate is 1 ~ 20%.
6. prepare a method for the compound organic absorbent described in the arbitrary claim of claim 1 to 5, it is characterized in that, it carries out as follows:
0.1 ~ 1:1 takes 1-butyl-3-methylimidazole glycinate and piperazine in mass ratio, is dissolved in deionized water under 30 ~ 50 DEG C of conditions by the two, stirs, mixes, obtain the compound organic absorbent that mass concentration is 10 ~ 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310338755.8A CN103357249B (en) | 2013-08-06 | 2013-08-06 | Compound organic absorbent used for flue-gas CO2-removal technology and preparation method thereof |
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| CN201310338755.8A CN103357249B (en) | 2013-08-06 | 2013-08-06 | Compound organic absorbent used for flue-gas CO2-removal technology and preparation method thereof |
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| CN103357249A CN103357249A (en) | 2013-10-23 |
| CN103357249B true CN103357249B (en) | 2015-07-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102035926B1 (en) * | 2018-03-21 | 2019-10-24 | 한국전력공사 | Absorbents For Acidic Gas Separation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537340A (en) * | 2009-04-30 | 2009-09-23 | 西安热工研究院有限公司 | Smoke CO*absorbent |
| CN102895845A (en) * | 2012-10-18 | 2013-01-30 | 昆明理工大学 | Ionic liquid absorbent and preparation method and application thereof |
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2013
- 2013-08-06 CN CN201310338755.8A patent/CN103357249B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537340A (en) * | 2009-04-30 | 2009-09-23 | 西安热工研究院有限公司 | Smoke CO*absorbent |
| CN102895845A (en) * | 2012-10-18 | 2013-01-30 | 昆明理工大学 | Ionic liquid absorbent and preparation method and application thereof |
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| CN103357249A (en) | 2013-10-23 |
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Granted publication date: 20150715 Termination date: 20180806 |