Wet-type electric precipitator and electric precipitation desulfurization device comprising same

Abstract

The invention discloses a wet-type electric precipitator and an electric precipitation desulfurization device comprising the same. The wet-type electric precipitator comprises anode plates, cathode rays, two cathode ray suspension frames, an insulator chamber and a cleaning water pipe, wherein multiple bending plates which extend along the vertical direction and are arranged in parallel are used as the anode plates; the multiple cathode rays are suspended between two adjacent bending plates and are bent in tendency the same as that of the bending plates; multiple barbs are fixed on each cathode ray at intervals; the two cathode ray suspension frames are respectively positioned above and below the anode plates and are used for fixing the top ends and bottom ends of the cathode rays; the insulator chamber is used for fixing the ends of the two cathode ray suspension frames; and the cleaning water pipe is arranged above the anode plates. The wet-type electric precipitator disclosed by the invention is used in the desulfurization device, is arranged between two-stage demisting layers in a desulfurization tower and is used for performing fine dust removal on flue gas subjected to primary demisting.

Description

technical field [0001] The invention relates to the technical field of air pollution control, in particular to a wet electrostatic precipitator and an electric dust removal desulfurization device including the wet electrostatic precipitator, which are used for removing dust PM2.5 and water vapor in flue gas after desulfurization Wet electrostatic precipitator is suitable for the flue gas dust removal field of power station boilers, industrial boilers, incinerators, etc. Background technique [0002] With the continuous occurrence of environmental pollution incidents with "smog" as the main form, coal-fired power plants with dust emissions accounting for more than 70% of the total have become the target of public criticism. Although the newly promulgated "Emission Standard of Air Pollutants for Thermal Power Plants (GB13223-2011)" only controls the dust emission concentration of coal-fired power plants to 20mg / Nm 3 , the emission requirements for natural gas mentioned 5mg / Nm...

AI Technical Summary

Problems solved by technology

[0006] However, the traditional wet electrostatic precipitator has the following deficiencies: 1) The distribution of the airflow between the electrodes is uneven, and there are even "dead angles", which reduces the dust collection efficiency

2) The corona intensity of traditional plate electrodes, wire electrodes, and rod electrodes is not high enough, so it is necessary to increase the voltage to obtain a high dust collection rate and prevent arc extinguishing effects, and obtain a high dust collection rate and prevent arc extinguishing effects

3) The traditional circular electrode tube has the problem that it is difficult to maintain the concentricity accurately, which makes the electric field uneven, easily causes frequent electric sparks, and affects the overall dust collection effect

4) Purified gas and flushing wastewater are discharged from the same outlet in the same direction, which may easily cause the purified gas to carry dirty wastewater, which seriously reduces the purification efficiency

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