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a co 2 Composite absorbent and its preparation method and application

A technology of absorbing liquid and sterically hindered amine, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles. The effect of large amount and high absorption rate

Active Publication Date: 2022-05-17
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome CO in the prior art 2 The absorption liquid has defects such as low absorption rate, small absorption capacity, and slow regeneration rate, thus providing a CO 2 Composite absorbent and its preparation method and application

Method used

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  • a co <sub>2</sub> Composite absorbent and its preparation method and application
  • a co <sub>2</sub> Composite absorbent and its preparation method and application

Examples

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Embodiment 1

[0034] This embodiment provides a CO 2 Composite absorption fluid, the CO 2 Composite absorption liquid includes 10g diethylenetriamine, 10g menthanediamine, 1g tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 79g water;

[0035] The above CO 2 The preparation method of the composite absorption liquid includes: mixing each raw material evenly to obtain CO 2 Composite absorbent.

Embodiment 2

[0037] This embodiment provides a CO 2 Composite absorption fluid, the CO 2 The composite absorption liquid includes 15g triethylenetetramine, 5g menthanediamine, 1g tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 79g water;

[0038] The above CO 2 The preparation method of the composite absorption liquid includes: mixing each raw material evenly to obtain CO 2 Composite absorbent.

Embodiment 3

[0040] This embodiment provides a CO 2 Composite absorption fluid, the CO 2 The composite absorption liquid includes 5g tetraethylenepentamine, 1g menthanediamine, 1g tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 93g water;

[0041] The above CO 2 The preparation method of the composite absorption liquid includes: mixing each raw material evenly to obtain CO 2 Composite absorbent.

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Abstract

The invention belongs to the technical field of gas absorption liquid preparation, and in particular relates to a CO 2 Composite absorbent and its preparation method and application. The absorption liquid includes ethyleneamine and steric hindered amine; the steric hindered amine includes menthane diamine and / or 2-piperidine ethanol. The CO 2 The absorption rate of the composite absorption liquid is high, the absorption capacity is large, the regeneration speed is fast, and the reusability is high; this is because the carbon source connected to the steric hindered amine and the amine group is a substituent with a branched chain, which can generate obvious steric positions. Resistance effect, after absorbing carbon dioxide, compared with other substances that absorb carbon dioxide, the CO provided by the present invention 2 The force between the composite absorption liquid and carbon dioxide is weak, which helps carbon dioxide to be desorbed from the absorption liquid, so that the carbon dioxide absorption liquid has better regeneration efficiency, reusability and easy desorption, and helps to reduce CO 2 The desorption energy consumption of the composite absorption liquid accelerates the CO 2 Desorption of composite absorbents.

Description

technical field [0001] The invention belongs to the technical field of gas absorption liquid preparation, and in particular relates to a CO 2 Composite absorbent and its preparation method and application. Background technique [0002] In recent years, global warming caused by the greenhouse effect has had a non-negligible impact on human life, such as rising sea levels, frequent episodes of extremely hot weather, and regional droughts. In 2018, the United Nations Intergovernmental Panel on Climate Change issued a special report on "Global Warming of 1.5°C", pointing out that greenhouse gas emissions caused by human activities are the root cause of global warming. The greenhouse gas CO 2 accounted for up to 60%, thus achieving CO 2 Emission reduction is the most effective means to control the greenhouse effect. CO 2 Capture, utilization and storage (CCUS) is the 2 The main way to reduce emissions. [0003] Chemical absorption is CO 2 One of the most mature processes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14
CPCB01D53/1493B01D53/1475B01D2252/504Y02C20/40
Inventor 孙路长苏军划王桦王凯亮吴冲张丽亚文潇贤汪洋王争荣胡小夫宋春风连少翰张士明杨如洪
Owner CHINA HUADIAN ENG
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