Eutecticevaporate solvent based on non-proton organic matter and method for efficiently absorbing SO2 by utilizing same

A technology of deep eutectic solvent and sulfur dioxide, applied in chemical instruments and methods, separation methods, separation of dispersed particles, etc., can solve the problems of limited use, high production cost, cumbersome synthesis steps, etc., and achieve high absorption capacity and recycling effect Good and efficient reversible absorption effect
CN109529555AActive Publication Date: 2019-03-29CHINA UNIV OF GEOSCIENCES (BEIJING)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (BEIJING)
Publication Date
2019-03-29

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Abstract

The invention provides a eutecticevaporate solvent system based on a non-proton organic matter. The eutecticevaporate solvent system is prepared from imidazolium salt and the non-proton organic matterSN (Succinonitrile), wherein a molar ratio of the imidazolium salt to the SN is 1 : (1 to 8). The invention also provides a method for absorbing / capturing SO2. The method comprises the following stepof: enabling the eutecticevaporate solvent system to be in contact with a SO2-containing gas for absorption, thus absorbing / capturing the SO2. The eutecticevaporate solvent adopted by the invention has higher absorption capacity to the SO2, has a good recycling effect and is capable of realizing efficient and reversible absorption on the SO2.
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Description

technical field

[0001] The invention belongs to the field of gas separation, and in particular relates to a deep eutectic solvent based on aprotic organic matter and a method for efficiently absorbing sulfur dioxide using the same. Background technique

[0002] Sulfur dioxide (SO 2 ), as a major air pollutant, can cause acid rain and acid fog, seriously endangering the ecological environment and people's health. SO 2 It mainly comes from the combustion of fossil fuels such as coal, oil, and natural gas in the process of industrial production. At present, industrial control of SO in flue gas 2 The emission methods mainly include flue gas desulfurization technologies such as dry method, semi-dry method and wet method. Among them, the most widely used in industry is the limestone-gypsum flue gas desulfurization technology in the wet process. This method has higher desulfurization efficiency. However, the limestone-gypsum method also has many shortcomings, such as the gene...

Claims

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