Differential movable type transverse electrode electrostatic precipitator

Abstract

The invention relates to a differential movable type transverse electrode electrostatic precipitator which comprises a housing. Two ends of the housing are provided with an inlet seal head and an outlet seal head, the lower part of the housing is provided with an ash bucket, and an anode system and a corresponding cathode system are provided in the housing; the anode system is composed of a plurality of vertically arranged annular anode rows at equal intervals, each anode row annularly moves under the driving of a transmission device, the bottom of each anode row is provided with an anode plate striking gear used for rapping and ash removal, and the cathode system and the anode system form a plurality of evenly-spaced, parallel and alternatively arranged sets of movable type differential electric field perpendicular to the direction of air flow. According to the invention, through cooperation between the movable annular anode rows and the anode plate striking gears at the bottom of the anode rows, the problem of secondary stirring of dust generated by rapping and ash removal of the anode of an electrostatic precipitator is overcome; gaps among anode plates are decreased, migration distance of charged dust is reduced, and an effective dust collecting area of a single electric field is increased.

Description

[0001] technical field [0002] The invention relates to an industrial dedusting device, in particular to an industrial electrostatic precipitator, such as an electrostatic precipitator for purifying industrial kiln tail gas. Background technique [0003] There are mainly two types of high-efficiency dust removal methods recognized by the dust removal industry, one is electrostatic precipitator, and the other is bag filter. The electrostatic precipitator belongs to the multi-stage filter system in the dust removal equipment. It was originally a high-tech product and is the mainstream of the dust removal industry. However, in recent years, electrostatic precipitators in various industries have become the objects required by various environmental protection departments for transformation. There are three main reasons for this: [0004] One is the improvement of national standards, which makes the design standard of the electrostatic precipitator that meets the standard disch...

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Problems solved by technology

[0004] One is the improvement of national standards, which makes the design standard of the electrostatic precipitator that meets the standard discharge lower than the current standard, and cannot meet the discharge standard;

[0005] Second, the complexity of working conditions in various industries (mainly due to the increase in specific resistance caused by changes in kiln raw materials) has changed the original design parameters (worsened working conditions), resulting in a larger selection of the original approach speed and a relatively large dust collection area. Shrunken, the dust collector cannot meet the discharge standard;

[0006] Third, due to the popularization of conventional electrostatic precipitator technology in recent years, in order to squeeze into the electric precipitator industry, some small manufacturers have slapped prices on each other, viciously competed, and arbitrarily selected the driving speed without considering the nature of the dust, greatly reducing the dust collection area and circulation area. , so the product cannot meet the standard when it is put into use

[0008] For the current new dust removal projects, bag filter and electric bag composite have become the first choice for users, but although the bag filter has no requirements for dust specific resistance and does not have secondary dust, it cannot adapt to acid-base, high humidity and high temperature working conditions, and there are bypass emissions of smoke and dust caused by broken bags and high temperatures

Although foreign acid, alkali and high temperature filter materials have been used, but the price is expensive, for example, some bag filter can reach 30mg / Nm 3 Below the emission standard, but the price is high, and the high pressure loss (1200-1500Pa) and periodic bag change (2-3 years / time) make the majority of users complain; if the electrostatic precipitator can overcome high specific resistance dust and secondary The two major technical bottlenecks of dust will surely make the electrostatic precipitator achieve a new breakthrough

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