Electrostatic bag type mixed dust collector

Abstract

The invention provides an electrostatic bag type mixed dust remover, which relates to the technical field of flue gas cleaning and dust removal. The electrostatic bag type mixed dust remover comprises a plurality of rows of discharge electrodes arranged at intervals along the direction of the gas flow at an inlet and a plurality of rows of filter bags. Two sides of each row of filter bags are provided with dust-collecting polar plates, and V-shaped deflectors and V-shaped sealing plates are arranged at the front and back ends of two adjacent dust-collecting polar plates respectively. The electrostatic bag type mixed dust remover has the structural characteristic that the dust-collecting polar plates consist of front dust-collecting polar plates positioned at a front section and connected with the deflectors, dust-collecting orifice plates positioned at a back section and connected with the upper parts of the front dust-collecting polar plates, and lower dust-collecting polar plate connected with the lower parts of the front dust-collecting polar plates. The dust-collecting orifice plates are uniformly distributed with a plurality of orifices, and the rows of filter bags are arranged at the back sections of the dust-collecting polar plates at the positions of the dust-collecting orifice plates. The invention adopts combined dust-collecting polar plates, reduces the ash filtration load of the filter bags, realizes a complete ash cleaning process, and improves the performance of a whole dust-removal system.

Description

technical field [0001] The invention relates to the technical field of flue gas purification and dust removal, in particular to an electrostatic cloth bag hybrid dust collector. Background technique [0002] In industrial production, such as thermal power generation, cement production, and metallurgical industries, gases containing a large amount of dust are often produced. If this gas is directly discharged into the atmosphere, it will bring serious particulate matter pollution to the environment. Therefore, these large quantities of particulate matter-laden gases must be purified by a dedusting device before being discharged to the atmosphere. In the prior art, dust removal devices for a large amount of dusty gas include electrostatic precipitators, pulse jet bag filter and so on. To obtain higher dust removal efficiency, dust collectors with different principles can be combined in a special way to jointly remove the particulate matter in the dusty airflow to achieve the...

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Problems solved by technology

[0004] However, since the air flow enters the cloth bag area through the holes on the perforated grounding plate, the large area of ​​openings on the dust collecting plate 3 reduces the effective dust collection area of ​​the grounding plate

For the bag part, if the efficiency of electrostatic precipitator is not high, the dust content in the incoming gas will increase, the corresponding cleaning cycle will be shortened, and the service life of the bag will be shortened a lot

Engineering practice shows that due to the efficiency of the electrostatic precipitator, the efficiency of this structure cannot reach the ideal value, and the removed ash cake cannot completely fall into the ash hopper, and the floating dust particles continue to be in the contact between the filter bag and the opening for a long time. The floors are repeatedly collected and cleared, resulting in a high pressure drop of the filter bag and a decline in the overall performance of the dust collector

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