Method for capturing carbon dioxide in flue gas of power plant

A carbon dioxide and flue gas technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of low capture efficiency, achieve the effects of reducing manufacturing costs, controlling corrosion, and promoting absorption
CN113134281AInactive Publication Date: 2021-07-20重庆丰淼生态环境科技有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
重庆丰淼生态环境科技有限责任公司
Publication Date
2021-07-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of treatment of carbon dioxide in flue gas through an absorption solvent, and discloses a method for capturing carbon dioxide in flue gas of a power plant, which comprises the following steps: firstly, removing mechanical impurities in the flue gas of the power plant in a gravity settling manner, and then enabling the flue gas of the power plant to pass through activated carbon to obtain filtered flue gas; introducing the filtered flue gas into a decarburization absorption tower to be in contact with a semi-lean amine solution to complete removal of carbon dioxide to obtain wet purified gas; and finally, carrying out gas-liquid separation on the wet purified gas, and discharging the gas. The semi-lean amine solution is prepared from deionized water, N-methyldiethanolamine, monoethanolamine, 1-hydroxyethylidene-1,1-diphosphonic acid, etidronate disodium, polyacrylic acid, hydroxyl silicone oil, tetradecyldimethylbenzylammonium chloride and sodium sulfite. The method solves the problems that MEA is used as a trapping solvent in the prior art, the trapping efficiency is about 90%, and the trapping efficiency is low.
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Description

technical field

[0001] The invention belongs to the technical field of treating carbon dioxide in flue gas by absorbing a solvent, and in particular relates to a method for capturing carbon dioxide in flue gas of a power plant. Background technique

[0002] At the 75th session of the United Nations General Assembly, my country put forward the goal of "strive to reach the peak of carbon dioxide emissions before 2030 and strive to achieve carbon neutrality before 2060", contributing to the reform and improvement of the global governance system. There will be a lot of power plant flue gas in the power system, and the main components of power plant flue gas are carbon dioxide, sulfur dioxide, water vapor, nitrogen and oxygen, and direct emission will have a very large impact on the environment. In order to meet the goals proposed by the country, it is necessary to treat the flue gas of the power plant before discharging it. The treatment effect of carbon dioxide in power plant ...

Claims

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