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A carbon dioxide phase change absorbent organic alcohol regeneration control method and its application

A carbon dioxide and absorbent technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve problems such as energy consumption, violation, and difficult separation, and achieve high industrial value, low cost, and mature preparation technology.

Active Publication Date: 2022-06-07
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used methods to promote regeneration performance include high temperature and high pressure, nitrogen purging, etc. However, although nitrogen purging improves regeneration performance, N 2 with CO 2 Difficult to separate, contrary to CO capture 2 The original intention, but high temperature and high pressure means that more energy needs to be consumed, not to mention solving the problem of large energy loss

Method used

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  • A carbon dioxide phase change absorbent organic alcohol regeneration control method and its application
  • A carbon dioxide phase change absorbent organic alcohol regeneration control method and its application
  • A carbon dioxide phase change absorbent organic alcohol regeneration control method and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0029] For AEP / sulf / H 2 O phase transition system, passing pure CO 2 Carry out the absorption experiment. After the absorption is saturated, extract the rich phase and mix it with 2 mol / L ethanol. After desorbing the mixed solution for 120 min, seal the absorption tube and wait for it to cool to room temperature. Take the desorbed solution and mix it with the poor solution for the second time. absorption, and compared to the initial absorption load to determine regeneration efficiency.

Embodiment 2

[0031] For AEP / sulf / H 2 O phase transition system, passing pure CO 2 Carry out an absorption experiment. After the absorption is saturated, extract the rich phase and mix it with 2mol / L n-propanol. After desorbing the mixed solution for 120 min, seal the absorption tube and wait for it to cool to room temperature. Secondary absorption and comparison with the initial absorption load to determine regeneration efficiency.

Embodiment 3

[0033] For AEP / sulf / H 2 O phase transition system, passing pure CO 2 Carry out an absorption experiment. After the absorption is saturated, extract the rich phase and mix it with 2 mol / L isopropanol. After desorbing the mixed solution for 120 min, seal the absorption tube and wait for it to cool to room temperature. Take the desorbed solution and mix it with the poor solution. Secondary absorption and comparison with the initial absorption load to determine regeneration efficiency.

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Abstract

The invention discloses a carbon dioxide phase change absorbent organic alcohol regeneration control method and application thereof. Among them, the organic alcohol is used for the regeneration control of the carbon dioxide phase change absorbent, and the carbon dioxide phase change absorbent is [DETAH][Tz] / n-propanol / water, [TETAH][Lys] / ethanol / water, AEP / sulf / h 2 O, TETA / DMCA or MAPA / DEEA, pure CO with a flow rate of 80mL / min was introduced into different phase change systems 2 , after the absorption reaches equilibrium, the rich phase is extracted, and 2.0mol / L organic alcohol is added to the rich phase to mix with it, and the mixed solution is taken for desorption, which can well improve the regeneration efficiency of the rich phase and increase the number of cycles of regeneration, and Organic alcohols are low in cost, low in toxicity, and have good industrial application value.

Description

technical field [0001] The invention belongs to the technical field of carbon dioxide capture, and in particular relates to a method and application for the regeneration and regulation of a carbon dioxide phase change absorbent organic alcohol. Background technique [0002] Global climate change caused by greenhouse gases is one of the most significant environmental problems in the world today. carbon dioxide (CO 2 ) as the most important greenhouse gas, its control and emission reduction has been the focus of attention of various countries in recent years. CO 2 The capture, storage and utilization (CCUS) is the most effective technology to achieve greenhouse gas emission reduction, in which the carbon capture process consumes 80% of the total cost of CCUS technology. 2 The energy consumption during the capture process is evaluated. At present, the most widely used in industry is the organic amine MEA aqueous solution as an absorbent for CO in flue gas. 2 capture separa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14
CPCB01D53/1475B01D53/1412B01D53/1425B01D2252/202Y02C20/40
Inventor 荆国华孔维鑫吕碧洪周作明
Owner HUAQIAO UNIVERSITY
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