Electro-filtration duplex double-phase dust remover

Abstract

The invention relates to an electro-filtration duplex double-phase dust remover. An anode bar of the dust remover is composed of a plurality of metal filter cartridges which are arrayed in parallel; the metal filter cartridges are correspondingly suspended on ceiling holes in a dust remover shell; a ceiling is fixed on a top beam of the shell; the metal filter cartridges are used for replacing an anode plate of an electrostatic dust remover to serve as an anode system of an electrostatic dust remover and a duplex dust collection chamber is composed of an electric field and the metal filter cartridges; a blowing pipe, which is mounted at the top of the dust remover and is provided with air holes, is used for blowing back the metal filter cartridges under the blowing pipe so that dust attached on the outer surfaces of the filter cartridges falls into a dust bucket; vibration and striking rods connected with the filter cartridges are mounted on the side face of the anode bar; and vibration and striking mechanisms corresponding to the filter cartridges are used for vibrating and striking. By virtue of the electro-filtration duplex double-phase dust remover, double-phase dust removal is realized by the action of an electric field force and airflow power, and secondary dust raising is not generated; the system resistance is relatively low and is less than or equal to 500Pa; the dust filtering and collection speed is improved by 60 times, the service life of the filter cartridges can reach 10 years and the dust removing efficiency eta is more than or equal to 99.95%; and the absorption (less than or equal to 1u) for fine dust can meet the emission requirements of PM2.5.

Description

technical field [0001] The invention relates to the technical field of electric filter dust removal for electrostatic precipitators, in particular to an electric filter compound two-phase dust collector. Background technique [0002] The traditional dust removal methods currently mainly adopt two dust removal principles, one is the principle of electrostatic dust removal, and the other is the principle of filter dust removal. The principle of electrostatic precipitator is the ideal dust removal method recognized by the industry in history. If the problem of secondary dust emission of the electrostatic precipitator itself can be solved, it will be the most ideal industrial waste gas dust removal equipment. The principle of electrostatic dust removal technology is: neutral dust is charged through the electric field and is adsorbed by the opposite electrode under the action of the electric field force. After the charge is released, the dust is collected by vibration cleaning. ...

AI Technical Summary

Problems solved by technology

But the main disadvantage is: the problem of secondary dust cannot be suppressed, and it is difficult to meet the increasing national standards for atmospheric emissions under the condition of online monitoring

The advantage of the bag (filter type) dust collector is that it can ensure that the discharge reaches the standard (provided that the filter bag is not damaged), but its main disadvantage is that the equipment has a large operating resistance, generally 1000-1500Pa, and the filter bag is easily damaged. Large amount of maintenance, high operating costs and not suitable for high temperature, high corrosion, high humidity environment

The electrostatic precipitator can no longer meet the requirements of the new standard due to its own secondary dust problem, so under the existing conditions, most enterprises have to choose the bag filter as the dust removal equipment for industrial waste gas.

However, due to the shortcomings of the bag filter, such as large resistance and easy damage, it is not an ideal dust removal equipment.

[0005] During this period, many dust removal companies at home and abroad have developed electric bag combined dust collectors. The purpose of the research and development is to solve the secondary dust problem of electrostatic precipitators through the combination of electric bags, increase the service life of filter bags, and reduce system resistance. Ozone produced by the dust part seriously oxidizes the filter bag, and the life of the filter bag cannot be increased by reducing the load of the filter bag, and the system resistance increases by 1200-1600Pa in actual operation, so it is actually better to choose the bag filter directly than the electric bag filter

At present, there is no dust collector with good comprehensive performance that can overcome the above defects.

Images