High-temperature electrostatic precipitation system

Abstract

The invention relates to a high-temperature electrostatic precipitation system. The high-temperature electrostatic precipitation system comprises a gas inlet, a deduster housing, a gas outlet and a layered ash bucket. Left and right ends of the deduster housing are respectively connected to the gas inlet and the gas outlet. The lower end of the deduster housing is connected to the layered ash bucket. An anode plate and a cathode rod are arranged in the deduster housing. A sealing housing is arranged around the deduster housing. A cavity is formed between the sealing housing and the deduster housing. Alumina porcelain is used for insulation between the cathode rod and the deduster housing. The alumina porcelain is connected to a hot air purging device. The bottom of the anode plate is provided with a mechanical vibration device. The periphery of the layered ash bucket is provided with a thermal insulation device. The layered ash bucket comprises an upper ash bucket and a lower ash bucket. The upper ash bucket is connected to the deduster housing. One end of the lower ash bucket is connected to the upper ash bucket by a cindervalve and the other end of the lower ash bucket is connected to an ash bucket pneumatic conveying device. The high-temperature electrostatic precipitation system can guarantee that the electric deduster effectively gathers fine particles in cracking gas at a high temperature of 300-800 DEG C and realizes equipment operation resistance less than 600Pa.

Description

technical field [0001] The invention belongs to the technical field of environmental protection dust removal equipment, and in particular relates to a high-temperature electrostatic dust removal system. Background technique [0002] Coal pyrolysis gasification technology is an important means of efficient and clean utilization of coal. By pyrolysis and gasification of coal rich in volatile matter at high temperature, gas and tar can be obtained, and gas and tar can be obtained through further deep processing High-quality fuel and chemical products, the semi-coke produced by pyrolysis can be used for combustion or gasification, so as to realize the graded and quality utilization of coal. Coal pyrolysis technology can make full use of a large amount of bituminous coal and lignite resources in my country, and can reduce the environmental pollution caused by coal burning while increasing the utilization value of coal. It has broad application prospects. At the same time, my cou...

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Problems solved by technology

The dust removal efficiency of the cyclone dust collector for dust removal based on the principle of inertial collision is not high, and it is usually used for pre-collection of dust, and the viscosity of the gas increases after the temperature rises, and the dust removal efficiency is lower than that of normal temperature; Gas purification has high air tightness requirements, high pressure loss makes the design more difficult, and the dust cleaning process of filter type dust removal needs to be blown back, and the drastic change of pressure at high temperature will easily lead to the damage of the filter material

[0006] The patent with the publication number CN101559307 discloses a high-temperature-resistant dust collector that can operate continuously at 300-1000°C. It uses a metal filter cartridge instead of a bag filter cartridge to withstand high temperatures. The dust collector has high dust removal efficiency, high operating resistance and Low energy consumption, but its metal filter cartridge is made of high-temperature-resistant metal material, which is expensive and has a large running resistance (usually above 15kPa), which greatly increases the design and cost of the dust collector

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