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Method for removing mercury pollutants in wet desulfurization process

A wet desulfurization and pollutant technology, applied in the field of mercury pollutant removal, achieves the effects of low investment cost, good adsorption performance and rich microporous structure

Inactive Publication Date: 2019-05-17
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical purpose of the present invention is to provide a method for removing mercury pollutants from industrial flue gas based on the wet desulfurization process in view of the particularity of the a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The invention is used as a flue gas pollution control treatment measure for coal-fired power plants, based on the wet desulfurization process, and removes the demisting device at the demisting section in the desulfurization absorption tower (that is, the downstream of the flue gas desulfurization process of the wet desulfurization process) , the activated carbon fiber layer is laid at the position of the original mist removal device in the desulfurization absorption tower. The activated carbon fiber layer is composed of activated carbon fiber loaded with 1-butyl-3-methylimidazolium chloride salt. The specific surface area of ​​the activated carbon fiber is about 2000m 2 / g , 1-butyl-3-methylimidazolium chloride was used as the ionic liquid in the activated carbon fiber layer, and the relative content of the ionic liquid in the activated carbon fiber layer was about 1 / 60 of the mass of the activated carbon fiber. In the wet desulfurization process, the aforementioned act...

Embodiment 2

[0021] The invention is used as a flue gas pollution control treatment measure for coal-fired power plants, based on the wet desulfurization process, and removes the demisting device at the demisting section in the desulfurization absorption tower (that is, the downstream of the flue gas desulfurization process of the wet desulfurization process) , the activated carbon fiber layer is laid at the position of the original mist removal device in the desulfurization absorption tower. The activated carbon fiber layer is composed of activated carbon fiber loaded with 1-butyl-3-methylimidazolium chloride salt. The specific surface area of ​​the activated carbon fiber is about 1700m 2 / g , 1-butyl-3-methylimidazolium chloride was used as the ionic liquid in the activated carbon fiber layer, and the relative content of the ionic liquid in the activated carbon fiber layer was about 1 / 12 of the mass of the activated carbon fiber. In the wet desulfurization process, the aforementioned act...

Embodiment 3

[0024] The invention is used as a flue gas pollution control treatment measure for coal-fired power plants, based on the wet desulfurization process, and removes the demisting device at the demisting section in the desulfurization absorption tower (that is, the downstream of the flue gas desulfurization process of the wet desulfurization process) The activated carbon fiber layer is laid at the position of the original mist removal device in the desulfurization absorption tower. The activated carbon fiber layer is composed of activated carbon fiber loaded with 1-hexyl-3-methylimidazolium hexafluorophosphate. The specific surface area of ​​the activated carbon fiber is about 2400m 2 / g, 1-hexyl-3-methylimidazolium hexafluorophosphate was used as the ionic liquid in the activated carbon fiber layer, and the relative content of the ionic liquid in the activated carbon fiber layer was about 1 / 60 of the mass of the activated carbon fiber. In the wet desulfurization process, the afor...

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Abstract

The invention discloses a method for removing mercury pollutants in a wet desulfurization process. The technological measure adopted by the method is as follows: an activated carbon fiber layer loadedwith ionic liquid is arranged at the downstream of a flue gas desulfurization process of the wet desulfurization process, and is used for absorbing and removing the mercury pollutants carried by theflue gas in the flue gas desulfurization process and trapping mist droplets. The method provided by the invention aims at the particularity of industrial flue gas pollution control treatment, and is based on the wet desulfurization process; the specific activated carbon fiber layer is arranged at the downstream of the flue gas desulfurization process of the wet desulfurization process, and is usedfor absorbing and removing the mercury pollutants carried by the flue gas in the flue gas desulfurization process and trapping the mist droplets; the method is small in modification amplitude on thewet desulfurization process, less in investment, free from secondary pollution, and good in removal effect of the mercury pollutants contained in the flue gas; the whole technological process is simple and easy to implement as well as economical and practical.

Description

technical field [0001] The invention relates to flue gas pollution control technology, in particular to a method for removing mercury pollutants in a wet flue gas desulfurization process. Background technique [0002] Sulfur dioxide (chemical formula SO 2 ) is the most common and simplest sulfur oxide, which is one of the important pollutants causing air pollution, seriously affecting the environment and threatening people's life and health. The production of sulfur dioxide mainly comes from volcanic eruptions and industrial production, and the formation of sulfur dioxide in industrial production mainly comes from coal and fuel oil. Therefore, how to effectively reduce the emission of sulfur dioxide in industrial production and protect the quality of the atmospheric environment is currently and An important topic of environmental protection for a long time to come. [0003] In recent years, a large number of research results have been obtained in industrial flue gas desulf...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/04B01D53/64
Inventor 鲍静静于江怀许家菱唐继国谢果刘洪涛
Owner SICHUAN UNIV