Absorbent used for removing acid gas and having oxidative degradation resistance performance

An acid gas and absorbent technology, which is applied in the field of absorbents with anti-oxidative degradation properties to achieve the effects of improving stability, improving regeneration effect, and reducing regeneration energy consumption

Active Publication Date: 2016-12-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can greatly solve the problem of degradation of this type of absorbent, improve the regeneration effect of the organic phase, maintain the absorption performance of the phase change absorbent, and at the same time improve the stability of operation and prolong the service life of the absorbent

Method used

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  • Absorbent used for removing acid gas and having oxidative degradation resistance performance
  • Absorbent used for removing acid gas and having oxidative degradation resistance performance
  • Absorbent used for removing acid gas and having oxidative degradation resistance performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Carried out the experiment under the same conditions as Comparative Example 1, just added 0.1g antioxidant A in the above-mentioned transpolar absorbent 1#, and its antioxidant A was 2-methyl-2-p-hydroxyphenylpropionyl chloride The product reacted with 1.0G polyamide-amine is shown in the following formula. Record the initial degradation time, and the results are shown in Table 1.

[0026]

Embodiment 2

[0028] Under the same conditions as Comparative Example 1, the experiment was carried out, except that 0.05g of antioxidant A was added to the above-mentioned polarity-changing absorbent 1#, and its antioxidant A was 2-methyl-2-p-hydroxyphenylpropionyl chloride Product of reaction with 1.0G polyamidoamine. Record the initial degradation time, and the results are shown in Table 1.

Embodiment 3

[0030] The experiment was carried out under the same conditions as in Comparative Example 1, except that 0.1 g of antioxidant B was added to the above-mentioned polarity-changing absorbent 1#, and its antioxidant B was 3,4-dihydroxyphenylpropionyl chloride and 1.0 g The product of the polyamide-amine reaction is shown in the following formula. Record the initial degradation time, and the results are shown in Table 1.

[0031]

[0032] The enhanced oxidative degradation experiment result of table 1 transpolar absorbent

[0033]

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PUM

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Abstract

The invention discloses an absorbent used for removing acid gas and having oxidative degradation resistant performance. The absorbent contains organic amine, and alcoholic and phenolic antioxygen. During removal of acid gas, the absorbent can form an organic phase and a carrier phase. The phenolic antioxygen can be dissolved in high-carbon alcoholic carrier phases to play an oxidative degradation resistant role, and also can be dissolved in an organic phase to play a thermal degradation resistant role. The phenolic antioxygen is a tree-like macromolecule phenolic antioxygen obtained by taking a compound containing a phenolic group as an initiator and introducing the phenolic group to the surface of polyamide-amine branch-shaped macromolecules.

Description

technical field [0001] The invention belongs to the technical field of gas purification, and in particular relates to an absorbent with anti-oxidative degradation performance for removing acid gas. Background technique [0002] The chemical absorption method is one of the most mature methods for acid gas removal at present, but a common problem it faces is high energy consumption. [0003] In recent years, some researchers have changed their way of thinking and began to study the use of polarized absorbents in the process of removing acid gases to solve the problem of high regeneration energy consumption. Compared with the traditional chemical absorption method, under the same treatment effect, this process can reduce the amount of liquid entering the desorption tower, thereby reducing regeneration energy consumption. However, since this system is a non-aqueous system, the oxidative degradation and thermal degradation of the absorbent are more significant, causing the syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14C08G83/00
CPCB01D53/1456B01D2252/202B01D2252/204B01D2252/604C08G83/004
Inventor 毛松柏陈曦江洋洋汪东黄汉根
Owner CHINA PETROLEUM & CHEM CORP
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