A wet electrostatic precipitator

Abstract

The invention discloses a wet electric precipitator which comprises a shell and a tubular anode system; the tubular anode system is arranged at the upper part of the inner cavity of the shell; a circulation opening is formed in the side surface of the lower part of the shell; the wet electric precipitator further comprises a plate type anode system positioned below the tubular anode system and opposite to the circulation opening in position; and a channel formed by a plurality of anode plates of the plate type anode system can be communicated with an anode pipe of the tubular anode system and the circulation opening. With the adoption of the structural design of the wet electric precipitator, the retention time of flue gas in an electric field is longer, the situation that partial flue gas flows out of the electric field without being treated is avoided, the dust removal and fog removal efficiency is improved, and the wet electric precipitator is suitable for occasions with high pollution of flue gas; and meanwhile, since the vertical height of the wet electric precipitator is increased in structure, and the occupied area is not increased, the investment cost is reduced further.

Description

technical field [0001] The invention relates to the technical field of dust removal, in particular to a wet electrostatic precipitator used in a coal-fired power station. Background technique [0002] With the continuous development of industry, the air pollution in our country is becoming more and more serious, especially the smoke pollution in the air, which has caused serious haze weather in recent years and endangered human health. How to curb the emission of flue gas pollutants has become one of the most important issues in today's industrial development, which promotes the application of dust collectors in industrial production, and further enhances the in-depth research on electrostatic precipitators. [0003] The purification principle of the electrostatic precipitator is: apply the strong electric field formed between the cathode and the anode, so that the air molecules are ionized, and a large number of electrons, positive and negative ions are generated instantly ...

AI Technical Summary

Problems solved by technology

[0006] For coal-fired power plants, the boiler flue gas volume is large. In order to ensure that the flue gas has sufficient residence time when passing through the cathode and anode, the length of the cathode and anode is usually adopted or the flue gas flow rate is reduced, although the length of the cathode line is not affected by the manufacturing process. However, according to the current anode tube bundle manufacturing process, the length of the anode tube can generally only be 3m~6m, so in practice, only the method of reducing the flue gas flow rate can be used, and reducing the flue gas flow rate will inevitably increase the net value of the flue gas. The circulation area and the specific dust collection area lead to an increase in the selection of equipment, which in turn increases the floor area and investment cost of the equipment

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