A kind of non-aqueous decarburization solution for capturing carbon dioxide in mixed gas and its application

A technology of carbon dioxide and mixed gas, applied in air quality improvement, chemical instruments and methods, and separation of dispersed particles, can solve the problems of high regeneration energy consumption and low decarbonization ability, and achieve low regeneration energy consumption, fast mass transfer, low viscosity effect
CN104492226BActive Publication Date: 2016-08-24DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2016-08-24

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Abstract

The invention provides non-aqueous decarburization solution for capturing carbon dioxide in a mixed gas, and belongs to the technical field of capturing of carbon dioxide gas. The invention relates to a non-aqueous decarburization solution, wherein a main absorption component is N-ethyldiethanolamine, and a solvent is N,N-diethylethanolamine. Because the non-aqueous decarburization solution has a high boiling point and low viscosity, uses tertiary amine capable of participating in CO2 absorption as the solvent, and uses secondary amine with a fast absorption speed and a high absorption amount, and easy to regenerate as the main absorption solvent, the absorption capacity, purification degree and desorption speed for carbon dioxide are increased, the temperature range of the reaction is expanded, the volume of a regeneration tower is reduced, the energy consumption of the regeneration is greatly reduced, and the equipment investment and operation cost are reduced. The non-aqueous decarburization solution provided by the invention is mainly used for capturing carbon dioxide in the tail gases of multiple chemical reactions, the tail gases of steel plants and cement plants, ore decomposition gas, combustion flue gas, natural gas, city gas and marsh gas, and has wide application prospect.
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Description

technical field

[0001] The invention belongs to the technical field of gas separation, and relates to a non-aqueous decarburization solution for capturing carbon dioxide in mixed gas and an application thereof. Background technique

[0002] It is well known that CO produced by human activities 2 Nearly 1 / 3 of that comes from the burning of fossil fuels. Different industrial production sectors emit large amounts of CO 2 , such as: refineries, cement plants, ironworks, power plants, lime plants, magnesia plants, etc. CO 2 Excessive emissions will cause atmospheric CO 2 The concentration of the pollutants reaches a high level, which will bring a series of environmental problems, and this phenomenon has caused widespread public and political concern. capture and store CO 2 ways to reduce atmospheric CO 2 content.

[0003] Existing technologies for separation and recovery of carbon dioxide include: physical methods, chemical methods, and biological methods. Physical meth...

Claims

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