Novel electrostatic/cloth bag compound dust removal system

Abstract

The present invention is a novel electrostatic / bag composite dedusting system, comprising a pre-dust collector, an electrostatic precipitator and a bag filter, the pre-dust collector is provided with a particle dust filter device, and the particle dust filter device filters the pre-dust collector The device is divided into left and right compartments, the lower part of the left compartment is provided with a dust outlet, the right compartment is provided with a humidity sensor and a humidifier, the humidity sensor is connected to a controller, and the bottom of the electrostatic precipitator is provided with a gas distribution The gas distribution channel is connected with an arc deflector, and a gas channel is connected between the arc deflector and the pre-dust collector. The invention can avoid the generation of corona occlusion phenomenon, detect the humidity of the gas in time through the humidity sensor, and perform appropriate humidification on it, the increase of the humidity content increases the aggregation of fine dust, and improves the dust removal efficiency. The composite design of the electrostatic precipitator combined with the bag filter can significantly improve the dust removal efficiency and ensure the service life of each dust removal component.

Description

technical field [0001] The invention relates to the field of gas dust removal, in particular to a novel electrostatic / bag composite dust removal system. Background technique [0002] The dust removal equipment supporting coal-fired power plant boilers in my country is mainly electrostatic precipitators. So far, the capacity of boilers using electrostatic precipitators in the power industry accounts for more than 95% of the total capacity. The dust removal efficiency of the electrostatic precipitator is affected by many factors such as the design level, the operating condition of the boiler, the type of coal fired, and the physical and chemical properties of the dust. Due to the variety of coal types in my country's coal-fired power plants, coupled with reasons such as operation and maintenance, most of the electrostatic precipitators in service are difficult to achieve the design efficiency. On the other hand, as the dust concentration increases, the secondary current of t...

AI Technical Summary

Problems solved by technology

Due to the variety of coal types in my country's coal-fired power plants, coupled with reasons such as operation and maintenance, most of the electrostatic precipitators in service are difficult to achieve the design efficiency

On the other hand, as the dust concentration increases, the secondary current of the electrostatic precipitator decreases, resulting in a decrease in dust removal efficiency, and in severe cases, it will cause corona occlusion.

The greater the dust concentration in the flue gas, the lower the corona current and the lower the dust collection efficiency.

Moreover, the humidity of the flue gas also has a great influence on the dust removal efficiency of the dust removal device.

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