Large electric bag composite dust collector

Abstract

The invention discloses a large-scale electric bag composite dust collector, which includes an electric dust removal area and a bag dust removal area. The lower part is equipped with ash hoppers, and a flow diversion device is arranged in the front head of the front part of the electrostatic precipitator area. A flow equalization device is installed between the electrostatic precipitator area and the bag dust removal area. A blocking device is arranged between two adjacent filter chambers, and the height of each filter chamber decreases gradually along the flue gas flow direction. The invention organically combines several airflow distribution devices with different forms and functions, and combines the staggered arrangement of filter bags to obtain the best airflow distribution, thereby improving the performance of the electric bag composite dust collector. It improves the dust removal efficiency, reduces the secondary adsorption of dust, eliminates the erosion of the filter bag by the high-speed airflow, and ensures the low-resistance, high-efficiency, and long-term stable operation of the dust collector. The present invention has a better effect when the height of the dust collection pole is greater than 10m.

Description

【Technical field】 [0001] The invention relates to environmental protection equipment, in particular to a large electric bag composite dust collector. 【Background technique】 [0002] About 70% of my country's total smoke and dust emissions come from coal combustion, and coal-fired power plants emit a large amount of fine particles, which are the main source of particle pollution. Electrostatic precipitator and bag filter are the most commonly used dust removal equipment in coal-fired power plants. [0003] The electrostatic precipitator has the advantages of large amount of flue gas treatment and low equipment resistance. However, its dust removal efficiency is greatly affected by the nature of the dust, and it is very difficult to meet the current environmental standards in my country for some smoke dust with high specific resistance. [0004] The bag filter is a filter type dust removal equipment. Its outstanding advantages are high and stable dust removal efficiency, bu...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problems in the prior art, and propose a large-scale electric bag composite dust collector with a new structure, which can solve the poor electrostatic dust removal effect caused by the airflow distribution design problem in the current electric bag composite dust collector. The problem of large resistance loss of the system can obtain the best air distribution and improve the performance of the electric bag composite dust collector

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