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Double phase absorption system for removing CO2 from flue gas

A flue gas and system technology, applied in air quality improvement, dispersed particle separation, chemical instruments and methods, etc., can solve problems such as difficult regeneration, achieve fast absorption rate, low regeneration energy consumption, and low energy consumption

Inactive Publication Date: 2016-03-16
SINOPEC ENERGY & ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its difficulty in regeneration, further research is still needed

Method used

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  • Double phase absorption system for removing CO2 from flue gas
  • Double phase absorption system for removing CO2 from flue gas
  • Double phase absorption system for removing CO2 from flue gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Prepare 300L composite absorbent, wherein the composition and content of each component are as follows: the content of diethylethanolamine in the alcohol amine absorbent component is 13.5wt%, the content of diphenylamine in the amine absorbent component is 8wt%, and the activator The contents of pentaethylenehexamine and hexaethyleneheptamine are 2wt% and 1.5wt% respectively; The content is 33wt%.

[0025] The test process is: refer to figure 1 , the temperature is 40 °C, the gas phase CO 2 The partial pressure is 0.1MPa, the volume fraction is 15% containing CO 2 , O 2 and N 2 The mixed gas (simulated flue gas component) is input into the 1000Nm gas filled with the above composite absorbent 3 / dCO 2 Capture continuous test experimental device, in which the absorption tower has a diameter of 200mm, a tower height of 16m, and a packing layer of 10m; a desorption tower has a diameter of 150mm, a tower height of 12m, and a packing layer of 8m; the solution circulatio...

Embodiment 2

[0030] Prepare 300L composite absorbent, wherein the composition and content of each component are as follows: the content of 2-ethyl-2-hydroxymethyl-1,3-propanediol in the alcohol amine absorbent component is 15wt%, and the amine absorbent component The content of di-sec-butylamine is 6.5wt%, the content of activator components pentaethylenehexamine and hexaethyleneheptamine is 2wt%, 1.5wt% respectively, and the content of consumption reducer component pimelic acid is 2wt%. The content of water is 40 wt%, and the content of n-butanol, an organic solvent component, is 33 wt%.

[0031] The test process is the same as in Example 1, and the relevant data results are shown in Table 2.

[0032] Table 2 Composite absorbent absorption, desorption test results

[0033]

Embodiment 3

[0035] Prepare 300L composite absorbent, wherein the composition and content of each component are as follows: the content of diethanolamine in the alcohol amine absorbent component is 15wt%, and the content of 3-methylaminopropylamine in the amine absorbent component is 6.5wt%. The contents of the agent component 2-methylpiperidine and aminoethylpiperazine are respectively 2wt%, 1.5wt%, the content of the consumption reducing agent component pimelic acid is 2wt%, the content of water is 40wt%, and the organic solvent is The content of butanol was 33% by weight.

[0036] The test process is the same as in Example 1, and the relevant data results are shown in Table 3.

[0037] Table 3 Composite absorbent absorption, desorption test results

[0038]

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PUM

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Abstract

The invention provides a double phase absorption system for removing CO2 from flue gas. The system is composed of an alkylol amine absorbent, an amine absorbent, an activator, a consumption reduction agent, water and an organic solvent. The double phase absorption system for removing CO2 from flue gas has the advantages of strong absorption capability, fast absorption rate, low regeneration temperature and low energy consumption in the regeneration process.

Description

technical field [0001] The invention belongs to the technical field of gas separation, in particular to a method for removing CO from flue gas 2 biphasic absorption system. Background technique [0002] As one of the important means to reduce carbon emissions from coal-fired power plants, CO 2 The capture and storage (carbon and sequestration, CCS) of carbon dioxide has attracted more and more attention from the international community in recent years. Current CO 2 Capture technologies mainly include chemical solvent absorption method, physical absorption method, membrane separation method, oxygen-enriched combustion method, etc. Among many methods, the traditional chemical solvent absorption method using ethanolamine (MEA) and other organic amines as absorbents is favored by researchers for its advantages of no need to modify the original power plant structure, small initial investment, and relatively mature technology. [0003] However, the main problem of alcohol amin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/62B01D53/86
CPCY02A50/20Y02C20/40
Inventor 陆诗建张建李清方刘海丽张启阳祝威尚明华张媛媛陆胤君文海力
Owner SINOPEC ENERGY & ENVIRONMENTAL ENG CO LTD
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