A wet electrostatic precipitator

Abstract

The invention provides a wet electrostatic precipitator, comprising: a cylindrical shell, an anode plate, a cathode line, an anode plate flushing nozzle, and a cathode line flushing nozzle; the anode plate includes two groups of symmetrically distributed anode plates, and the symmetrical plane is cylindrical An axial plane passing through the central axis of the housing; and the two sets of anode plates respectively include a plurality of parallel anode plates, and the corresponding anode plates in the two sets of anode plates meet on a plane of symmetry, or the corresponding anode plates The extended planes meet at the symmetrical plane; there is an inclination angle α between the anode plate and the symmetrical plane, 0°

Description

technical field [0001] The invention relates to the field of flue gas dust removal and purification, in particular to a wet electric dust collector. Background technique [0002] With the implementation of environmental protection emission standards for the domestic thermal power industry, the emission concentration standards for dust (fine particles) have been further improved. After the flue gas is desulfurized, further advanced treatment is required to reduce the dust content and soluble solid salt in the flue gas to meet the new emission requirements and achieve emission standards. [0003] As a high-efficiency dust removal technology, wet electrostatic precipitator technology has been widely used in the field of flue gas dust removal. Compared with the dry electrostatic precipitator technology, the wet electrostatic precipitator optimizes the dust removal method, cancels the traditional vibrating dust removal device, forms a water film on the surface of the electrode p...

AI Technical Summary

Problems solved by technology

However, since the cross-section of the absorption tower perpendicular to its central axis is a circular structure, the fit between the electric field of the square structure and the absorption tower with a circular cross-section is low, resulting in an electric field blind area around the electric field. The advanced treatment of dusty particles has obvious inhibitory effect

At present, the commonly used method to control the blind area is to block the blind area of ​​the electric field, but after the blockage, the cross section of the flue gas circulation will be reduced, resulting in an increase in the flow rate of the flue gas in the electric field area (generally, the growth rate can reach 8% to 10%)

As the flue gas velocity in the electric field increases, the residence time of the flue gas will be shortened, which is not conducive to the removal of dust in the flue gas

At the same time, due to the square structure of the anode plate, it greatly limits the specific area of ​​the dust collecting electrode of the electric field. In order to achieve a higher specific dust collecting electrode area in the prior art, it is necessary to expand the diameter of the electric field section, but this increases the Absorb the load of the tower, increasing the difficulty of construction

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