Wet electrostatic precipitator electric field cathode modular fixing device

Abstract

The invention discloses an electric field cathode modular fixing device for a wet-type electric precipitator. The fixing device comprises a cathode fixing frame, the cathode fixing frame is connected with a cathode hammer, the cathode hammer is arranged between a purified smoke outlet of a desulfurizing tower and an anode dust-collecting module of the wet-type electrostatic precipitator; the anode dust-collecting module is a conductive glass reinforced plastic dust-collecting hexagonal pipe with incircle diameter of 360mm and the wall thickness of 6mm; the cathode hammer is connected with the lower end of a cathode line, the upper end of the cathode line is connected with a support beam at the upper part of the anode dust-collecting module, the support beam is connected with suspenders at two ends; the suspenders are supported on a quartz seat or a ceramic insulator, the quartz seat or the ceramic insulator is connected with a platform support through a support plate, and the platform support is connected with a shell of the precipitator. The mechanical transmission loss and the heat loss are reduced while the suppression escaping phenomenon is prevented, the occurrence of discharge accident is avoided, the movable points of the fixing apparatus are reduced, and the thermal deformation resistance of the fixing device is improved, so that the precipitator can stably run in an efficient and energy-saving manner.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to an electric field cathode module fixing device for a wet electrostatic precipitator. Background technique [0002] Due to the great harm of fine dust to human health, power plants and steel mills have put forward very high requirements on the performance of dust collectors, and the requirements for corporate smoke and dust emission standards are also increasing year by year. The treatment effect of the original dust removal equipment has not reached the requirements of the existing standards. In order to meet the emission standards, most of the existing technologies use power plants and steel mills to add wet high-voltage electrostatic precipitators after the original desulfurization process. The cathodes used in the dust collector are fixed as follows: 1. Bypass hoisting type, the defect is that this process has escaped flue gas; 2. An insulator is used to heat and...

AI Technical Summary

Problems solved by technology

The treatment effect of the original dust removal equipment has not reached the requirements of the existing standards. In order to meet the emission standards, most of the existing technologies use power plants and steel mills to add wet high-voltage electrostatic precipitators after the original desulfurization process. The cathodes used in the dust collector are fixed as follows: 1. Bypass hoisting type, the defect is that this process has escaped flue gas; 2. An insulator is used to heat and fix between the anode and the cathode, and the insulator is blown with hot air to achieve insulation. The existing defects Yes, this process is equipped with a heater and a hot air fan. The mechanical transmission and heat loss are large, and it is also prone to discharge accidents and unstable operation; The hole will penetrate the cathode wire, because more than 95% of all fixed points are live points, and only some intersection points of the angular brace fixing strips are welding dead points. The existing defects are that the fixed frame is unstable and the thermal deformation temperature of the material Below 70°C, there are many working conditions where the operating temperature exceeds 70°C after wet desulfurization, so the strength is not easy to deform. Taking a 600m² sintering machine in a certain company as an example, when the inlet smoke concentration exceeds 50mg / m³ or the electric field is boosted to 70kv, the polar line will There will be shaking in the range of 5~15mm, which will make the cathode too close to the anode, and the electric field will be broken down and the whole set of equipment will temporarily fail

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