Flue gas pollutant treatment method based on wet plasma

Abstract

The invention discloses a flue gas pollutant treatment method based on wet plasma. By means of the flue gas pollutant treatment method based on the wet plasma, fine dust particles can be removed obviously and efficient desulfuration, denitration and demercuration on the flue gas can be realized. According to the method, first the fine dust particles in the flue gas are adsorbed and removed by using a wet electrostatic technology; and then the volatile organic compound in the flue gas is oxidized removed and elemental mercury, sulfur dioxide and nitrogen oxide in the flue gas are deeply oxidized by using a wet plasma technology; and after the flue gas is oxidized, the residual pollutants are absorbed and removed by using a bubble absorption method; and finally mercury, sulphur and nitre in the bubble absorption liquid are separated and extracted by cation exchange resin. The method has the characteristics of being efficient and capable of realizing energy conservation and recycle utilization of resources. The requirements of different factories can be met by controlling the index of each link flexibly in combination with the actual pollutant compositions in the flue gas.

Description

Technical field [0001] The method belongs to the technical field of industrial flue gas pollutant treatment, and specifically relates to a flue gas pollutant treatment method based on wet plasma. Background technique [0002] The flue gas contains various pollutants such as dust particles, elemental mercury, sulfur dioxide and nitrogen oxides. The traditional flue gas pollutant treatment method is to set up an independent treatment device for each pollutant. The mainstream technical methods include dust collectors to remove dust particles, limestone slurry absorption to remove sulfur dioxide, and ammonia selective catalytic reduction to remove nitrogen oxides. Wait. This processing method has a long process, a large number of equipment and is complicated, which results in high investment and operating costs of the processing system and a large area. Therefore, the development of new technologies, the use of as few processing equipment as possible in a shorter process, to achiev...

AI Technical Summary

Problems solved by technology

However, the complexity of the plasma reaction and the uncontrollability of the degree of discharge greatly limit the degree of industrial application of plasma purification technology.

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