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Absorbent for catching or separating dioxide carbon

A carbon dioxide and absorbent technology, applied in the direction of absorption, separation method, dispersed particle separation, etc., can solve the problems of slow absorption speed and low absorption capacity, and achieve the effect of increasing stability, efficient absorption capacity and improving stability

Inactive Publication Date: 2011-09-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ionic liquids absorb CO 2 It is a physical absorption process, with defects such as slow absorption speed and low absorption capacity

Method used

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  • Absorbent for catching or separating dioxide carbon
  • Absorbent for catching or separating dioxide carbon
  • Absorbent for catching or separating dioxide carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: the preparation of absorbent

[0036] Combine 300gMEA and 100g[Bmim]BF 4 Dissolve in deionized water, dilute to 1L with deionized water, and stir evenly to obtain absorbent. Place the obtained absorbent in a constant temperature water bath at 30°C and keep it warm for 10 minutes, so that the temperature of the absorbent reaches the set temperature of 30°C, stir and mix well, and set aside.

Embodiment 2

[0037] Embodiment 2: the preparation of absorbent

[0038] Combine 300gMEA and 500g[Bmim]BF 4 Dissolve in deionized water, dilute to 1L with deionized water, and stir evenly to obtain absorbent. Place the obtained absorbent in a constant temperature water bath at 30°C and keep it warm for 10 minutes, so that the temperature of the absorbent reaches the set temperature of 30°C, stir and mix well, and set aside.

Embodiment 3

[0039] Embodiment 3: the preparation of absorbent

[0040] Combine 300gMEA and 200g[Bmim]BF 4 Dissolve in deionized water, dilute to 1L with deionized water, and stir evenly to obtain absorbent. Place the obtained absorbent in a constant temperature water bath at 30°C and keep it warm for 10 minutes, so that the temperature of the absorbent reaches the set temperature of 30°C, stir and mix well, and set aside.

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Abstract

The invention discloses an absorbent for catching or separating dioxide carbon, which is an aqueous solution of monoethanolamine and 1-butyl-3-methylimidazolium tetrafluoroborate. The concentration of the monoethanolamine in the absorbent is 100-300 g / L, and the mass ratio of the monoethanolamine to the 1-butyl-3-methylimidazolium tetrafluoroborate is 0.5-3. The absorbent has high-efficiency CO2 absorbency, such as high dioxide carbon absorption efficiency and absorption capacity, as well as high oxidation resistance, high temperature resistance and resistance to impact load, i.e., good stability; in addition, the absorbent is easy to regenerate and has the advantages of economy and easiness for industrialization.

Description

technical field [0001] The invention relates to the field of carbon dioxide capture and separation, in particular to an absorbent for capturing or separating carbon dioxide. Background technique [0002] Global warming has become the most serious environmental problem faced by mankind. As a greenhouse gas, carbon dioxide (CO 2 ) is generally considered to be one of the main causes of global climate change. According to the IPCC Fourth Assessment Report, in 2005 atmospheric CO 2 (379ppm) and CH 4 (1774 ppb) concentrations far exceed the range of natural variation over the past 650,000 years. The "World Energy Outlook 2007" promulgated by the International Energy Agency predicts that if no effective emission reduction measures are taken, the global CO2 from 2005 to 2030 will 2 Emissions would rise by 57%. Therefore, various high-efficiency, low-energy and feasible separation and capture CO 2 Technology is highly valued by countries. [0003] One of the key technologies ...

Claims

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Application Information

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IPC IPC(8): B01D53/14
CPCY02C10/06Y02A50/20Y02C20/40
Inventor 李伟吕碧洪张莉金佳佳
Owner ZHEJIANG UNIV
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