Cathode system and discharge method for wet electrostatic precipitator

Abstract

The invention discloses a cathode system and a discharging method used for a wet-process electrostatic dust collector. The cathode system comprises a cathode hanging rod, a cathode suspension beam and a plurality of rows of cathode frameworks which are arranged in parallel. An insulator sleeve covers the cathode hanging rod and the cathode hanging rod is arranged in a heat insulation box; the cathode suspension beam is a hollow cuboid; each cathode framework comprises a vertical pipe, a transverse pipe, a reinforcement tube, a corona wire and a lug plate. The discharging method comprises the following steps: a high-voltage power supply is used for conveying high-voltage power to a cathode system structure in a shell through the cathode hanging rod; the heat insulation box and the insulator sleeve are used for drying and insulating the cathode hanging rod; the barb tip of each corona wire releases the high-voltage power to form a wet type electric field, so that fine particles are charged. According to the cathode system, the wet-process electrostatic dust collector can be effectively safely and efficiently operated; the layout of the cathode system is scientifically and reasonably optimized; and the uniform and stable discharging is guaranteed, and the removing efficiency of PM2.5 is effectively enhanced.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment methods, in particular to a cathode system and a discharge method for a wet electrostatic precipitator. Background technique [0002] In recent years, my country's environmental problems have become increasingly serious, especially air pollution problems such as smog and acid rain, which have greatly affected people's lives and aroused widespread public concern and heated discussions on air pollution. The fine particles produced by coal combustion are considered to be an important cause of smog. The state attaches great importance to this, and constantly formulates new laws and regulations to gradually tighten emission requirements. [0003] With the continuous improvement of the country's dust emission standards for coal-fired boiler tail gas, the dust emission requirements have been greatly increased to 10mg / Nm 3 , many areas even reached 5mg / Nm 3 , and the SO carried in the flue ga...

AI Technical Summary

Problems solved by technology

[0004] At present, the common dry electrostatic precipitator, electrostatic bag composite precipitator and bag filter as the front-end dust control technology cannot effectively guarantee the ultra-clean emission of flue gas dust after the desulfurization device, while the wet electrostatic precipitator is used as a terminal dust control technology. Control technology can achieve deep dust removal, and can also synergistically remove SO in flue gas 3 and mercury and other pollutants

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