Low-temperature plasma smoke compound pollutant control method

Abstract

The invention discloses a low-temperature plasma smoke compound pollutant control method. By discharging at a high voltage to generate low-temperature plasmas in a dry reactor and a wet reactor, the method controls pollutants and oxidized by-products in the smoke, such as smoke dusts, sulfur dioxide, oxynitride, hydrogen sulfide, hydrogen chloride, heavy metal and the like, by combination with the conventional dedusting method, the ammonia method desulfuration, the limestone/gypsum wet method, the rotary atomization drying method and the like, wherein the dry plasma reactor is used together with a dedusting device to improve the dedusting efficiency and oxidize the nitric oxide; and an absorbing device is used together with the wet plasma reactor to remove gaseous pollutants, oxidize ammonium sulfite, namely a desulfurized product of an ammonia absorber, demist and purify the tail gas. The method can be used for controlling smoke compound pollutants of boilers or incinerators.

Description

technical field [0001] The invention belongs to the technical field of environmental protection / exhaust gas purification, and in particular relates to a discharge device for generating low-temperature plasma combined with other technologies to purify complex pollutants (sulfur dioxide, nitrogen oxides, smoke, hydrogen sulfide, hydrogen chloride, heavy metals) method. Background technique [0002] The flue gas contains a large amount of sulfur dioxide, nitrogen oxides, soot, hydrogen sulfide, hydrogen chloride, and heavy metals. These pollutants can damage the human respiratory system and seriously affect human health. They will also aggravate environmental pollution such as acid rain and photochemical smog. [0003] There are many independent treatment technologies specially used for dust removal, desulfurization and denitrification, etc. Most of the systems that simultaneously treat smoke, sulfur dioxide and nitrogen oxides are simply a combination of various independent t...

AI Technical Summary

Problems solved by technology

Due to the low efficiency of the electrostatic precipitator at the front end of the discharge reactor, fine particles can enter the subsequent equipment

The absorption product of the ammonia absorption tower is oxidized by blowing air, and the wet electrostatic precipitator is only used to remove acid mist and particulate matter, which has low energy utilization efficiency and high energy consumption

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