Electrostatic precipitator with high-efficiency dust collecting pole

Abstract

The invention relates to an electrostatic precipitator of an efficient dust collecting electrode, comprising a shell which is provided with an airflow inlet and an airflow outlet. A discharge electrode and a dust collecting electrode are arranged in the shell. Wherein, the dust collecting electrode comprises a hollowed-out metal shell, and a dust collecting plate or a dust collecting sphere or an alveolar porous plate which is filled in the shell and manufactured by porous metallic foams or porous foam plastics processed via conductive treatment, and the dust collecting plate or the dust collecting sphere moves between an integration chamber and a dust cleaning chamber. The electrostatic precipitator of the efficient dust collecting electrode of the invention selects the porous metallic foams or the porous foam plastics processed conductive treatment, to manufacture a flat type, a granular type or an alveolar porous type to fill in the shell of a metal framework or a reticular formation to manufacture the dust collecting electrode with different structures such as rotary type, flat brattice type, circular flow type and so on, and at the same time separates a dust collecting area and a dust cleaning area to make dust collection efficiency of the electrostatic precipitator reach to more than 99.99%. The dust collecting electrode of the invention is particularly applicable to the last stage of the electrostatic precipitator, wherein, after dust abatement, dust content of the gas per cubic meter is less than or equal to 10mg.

Description

technical field [0001] The invention relates to an electric precipitator, specifically designs a brand-new, high-efficiency dust collecting electrode, and belongs to the technical field of separating dispersed particles from gas by electrostatic effect. Background technique [0002] The electrostatic precipitator uses the strong electric field generated by the high-voltage DC power supply to ionize the electronegative gas in the flue gas to generate a corona discharge, and then makes the dust suspended in the gas charged to reach the electrode with the opposite polarity under the action of the electric field force. On, so as to achieve the purpose of separating the suspended dust from the gas. Obviously, the electrostatic precipitator must have a discharge electrode and a dust collection electrode for collecting dust. At present, electrostatic precipitators are widely used, and there are many varieties and models; the structure of the dust collector directly affects the dus...

AI Technical Summary

Problems solved by technology

There are many forms of dust collecting poles, there are two types: pull-type and tube-type, and pull-type electrodes are divided into three types: flat-shaped electrodes, box-type electrodes and plate-type electrodes. These dust-collecting poles have the following shortcomings: 1. Dust-collecting poles It is fixedly installed in the shell, and the dust collection and dust cleaning are carried out in the shell, so it is easy to generate secondary flying when cleaning the dust.

2. At present, the dust collectors are all made of steel plates in flat or corrugated shape, with a fixed area, and the orientation of the pole plates is consistent with the direction of the dust-laden airflow. Dust collection efficiency below 99.5%

3. The dust removal efficiency is low for dust with high specific resistance (the conductivity of dust is usually expressed by specific resistance)

4. The capture rate of fine dust less than 1μm is low

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