A Differential Electrostatic Precipitator

Abstract

The invention discloses a differential electrostatic precipitator, which includes a shell, an ash hopper, an inlet head, an outlet head, a cathode system, and an anode system. The ash hopper is connected to the shell through a bottom beam and is located below the shell. The inlet head and the outlet head are respectively located on both sides of the shell, the cathode system and the anode system are set inside the shell, and an auxiliary discharge system is installed at the rear end of the inlet head; Permeable anode rows, every two transparent anode rows form a wedge shape from the side of the inlet head to the side of the outlet head, and are connected by a V-shaped deflector at the junction of the transparent anode row on the side of the inlet head; The cathode system is composed of several cathode small frames, each small frame is independently insulated and suspended and placed in the triangular space formed between the anode system and the anode auxiliary discharge system. The invention reduces the average distance between the dust and the anode plate. Overcome back-corona scenarios caused by high specific resistance dust. Improve the cleaning effect and overcome the secondary dust.

Description

technical field [0001] The invention relates to a dust control device, in particular to a differential electrostatic precipitator. Background technique [0002] With the continuous improvement of the degree of industrialization, the environmental pollution in the world is increasing day by day, and the improvement and protection of the environment have been paid more and more attention by people from all walks of life. To this end, China has continuously improved the emission standards of smoke and dust, from the initial 80mg / m 3 Gradually drop to 30-50mg / m 3 Even below, dust removal systems in various industries such as electric power, building materials, steel, and non-ferrous smelting are facing an unprecedented test, and the following situations have occurred: [0003] 1. Electric power industry: As coal resources decrease year by year, the quality of coal used in boilers also decreases, resulting in a large increase in smoke and dust content, and the specific resistan...

AI Technical Summary

Problems solved by technology

[0004] 2. Building materials industry: With the development of large-scale dry process production, the problem of the dust collector at the end of the rotary kiln has become increasingly prominent. The electric dust collector powered by the thyristor high-voltage power supply cannot meet the standard, and the cost of the bag dust collector is high, and the operating cost is high. , heavy maintenance workload, high energy consumption, and secondary pollution caused by filter bag treatment

The bag dust collector cannot adapt to the working conditions, and the electric dust collector powered by silicon controlled rectifier has no obvious dust collection effect and does not meet the standard

[0006] 4. Non-ferrous industry: various furnaces are used for smelting, and the flue gas condition is similar to that of the kiln produced by dry process cement and the flue gas of the sintering machine in the steel plant. The cost of using a bag filter is high, the operating cost is high, and the maintenance workload is large. , high energy consumption, and poor effect of electric dust collectors. At present, four electric fields and five electric fields are used, but the effect is not good

If the same pole distance is 400mm, the average distance between the dust particles and the anode r=200mm, it can be seen that the dust is almost moving away from the plate, the average migration distance of the dust is large, and at the same time it cannot overcome the back corona caused by the high specific resistance dust deposition Phenomenon, the rapping strength transmission attenuates quickly, and it is easy to cause secondary flying

Conventional electrostatic precipitators can no longer meet the ever-increasing national emission standards (30-50mg / m 3 )

Images