High temperature electrostatic precipitator system

Abstract

The invention relates to a high-temperature electrostatic precipitator system, comprising a gas inlet, a precipitator shell, a gas outlet and a layered ash hopper. The ash hoppers are connected with each other; anode plates and cathode rods are arranged in the dust collector shell, a sealing shell is arranged on the periphery of the dust collector shell, a cavity is formed between the sealing shell and the dust collector shell, and the cathode rod and the dust collector shell are connected It is insulated by high-alumina ceramics, which is connected to the hot air blowing device, and the bottom of the anode plate is provided with a mechanical rapping device; the outer periphery of the layered ash hopper is provided with a thermal insulation device. The layered ash hopper includes an upper ash hopper and a lower ash hopper. The upper ash hopper is connected with the shell of the dust collector, one end of the lower ash hopper is connected with the upper ash hopper through an ash discharge valve, and the other end is connected with the ash hopper airflow conveying device. The invention ensures that the electrostatic precipitator can effectively capture the fine particles in the cracked gas under the high temperature condition of 300-800 DEG C, and realizes that the operating resistance of the equipment is 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...

AI Technical Summary

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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