A water film forming device for a wet electrostatic precipitator

Abstract

The invention discloses a water film forming device of a wet-type electrostatic precipitator. The water film forming device is arranged at the upper part of a dust collecting electrode; the water film forming device comprises a water inlet part and diversion trenches uniformly distributed below the water inlet part; and a 45-60 angle is formed between the diversion trenches and the vertical direction. According to the water film forming device of the wet-type electrostatic precipitator, a stable, continuous and uniform water film is formed on the surface of the dust collecting electrode, so that the condition that the dust collecting electrode is polluted by dust is fundamentally and thoroughly avoided, and the maintenance expense for cleaning the dust collecting electrode is reduced; in addition, the lower part of the dust collecting electrode is provided with a drainage and separation pipe, a water retaining plate connected with the drainage and separation pipe and a drainage guide pipe connected to the water retaining plate, so that spark discharge generated because circulating water drops for forming the water film drop on a support frame located at the lower part of a discharge electrode can be effectively avoided, and the dust collecting efficiency and running efficiency of the wet-type electrostatic precipitator can be increased on the whole.

Description

technical field [0001] The invention relates to a water film forming device for a wet electrostatic precipitator, which belongs to the field of machinery. Background technique [0002] The electrostatic precipitator is to place a discharge electrode with a relatively small curvature (sharp) between the high-curvature (planar) dust-collecting electrodes, and then apply a high voltage to the discharge electrode, forming a gap between the discharge electrode and the dust-collecting electrode. unbalanced electric field. Dense electric field lines, using the corona (corona) discharge generated by the sharp part of the discharge electrode (discharge needle) with enhanced electric field strength, charges the inflowing particle state matter (dust, mist), and the charged particles in the continuous electric field rely on electrostatic force to The dust collector is a mobile adsorption and removal device. [0003] For particles with a diameter of 0.1 to 1 μm, when a general mechanic...

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Problems solved by technology

In order to maintain the cleaning efficiency, a huge water flow rate is required, and it is difficult to completely clean the electrode, so regular shutdown cleaning is required; in the case of continuous spraying of fine liquid (mist) for cleaning, almost all the water is evaporated when reaching the front end of the electrode, and the electrode There is no way to effectively clean the deep inside, and if there is too much water when spraying, the efficiency will be reduced due to spark discharge

[0004] The dust collected by the dust collector is mainly non-conductor. If it is not cleaned in time, an insulating film will be formed in the dust collector, which will hinder the smooth discharge of the discharge electrode and induce spark discharge through local insulation damage, which will reduce the working efficiency of the electrostatic precipitator. main factor

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