A high-voltage electrostatic precipitator with fog curtain

Abstract

The invention discloses a high-pressure electrostatic dust remover with a fog curtain, comprising a electrostatic dust remover main body, wherein a front end of the electrostatic dust remover main body is connected with an inlet flue, while a rear end of the electrostatic dust remover main body is connected with an outlet flue; a plurality of electric fields are arranged in the electrostatic dust remover main body; a plurality of dry fog nozzles are arranged on at least one of the position of the front of the first electric field, the position of among the electric fields, and the position of a flue gas flow-through channel behind the last electric field in the electrostatic dust remover main body; each dry fog nozzle is connected with a liquid supply pipeline and a gas supply pipeline through a pipeline; the dry fog nozzles are arranged as an array and spray to form the fog curtain which is approximately perpendicular to the flow direction of flue gas; a plurality of dry fog nozzles can also be arranged on at least one cross section of the inlet flue; and the fog curtain formed by spraying of the dry fog nozzles is also approximately perpendicular to the flow direction of the flue gas. The high-pressure electrostatic dust remover disclosed by the invention is relatively high in dust removal efficiency, effectively increases removal efficiency of micro-fine dust and high-resistivity dust, and reduces energy consumption.

Description

technical field [0001] The invention relates to a high-voltage electrostatic precipitator, in particular to a high-voltage electrostatic precipitator with a fog curtain. Background technique [0002] The high-voltage electrostatic precipitator is a device for collecting dust in industrial flue gas by electrostatic purification method, and it is completed by two systems of discharge electrode and dust collection electrode. Under the action of the electric field force, the dust moves to the electrode with opposite polarity, and deposits on the electrode to achieve the purpose of dust collection. The two pole systems are equipped with vibrating devices. When the two poles are knocked separately, the dust adhering to them will be shaken off, fall into the lower ash hopper, and be discharged to the ash storage through the ash discharge device. The purified clean gas is discharged into the atmosphere through the chimney through the outlet to complete the flue gas purification pro...

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Problems solved by technology

[0003] However, the traditional high-voltage electrostatic precipitator has the following insurmountable problems: (1) Due to the side mechanical rapping or top electromagnetic rapping device of the traditional high-voltage electrostatic precipitator, the process of beating and removing the dust adsorbed on the anode plate and the cathode line Part of the shaken dust cannot fall into the ash hopper due to the flue gas flow, causing secondary dust, which flows into the next electric field with the air flow or is directly discharged into the chimney from the outlet; (2) due to the traditional high-voltage electrostatic dust removal Due to the limitation of flue gas and dust working conditions and the breakdown voltage of the electrode spacing, it is difficult for high-voltage static electricity to capture inhalable fine dust particles (PM2. Inhalation of PM2.5 fine dust particles

In order to better remove fine dust and high specific resistance dust in industrial flue gas, the existing method also uses wet (water) electrostatic precipitator for dust removal, but wet (water) electrostatic precipitator is easy to cause the electric field of the electrostatic precipitator to be extremely high. wire corrosion, shorten the service life of the electrostatic precipitator, and cause secondary water pollution

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