Partition-sealed deashing device of electric dust collector

Abstract

The invention relates to a partition-sealed deashing device of an electric dust collector. The partition-sealed deashing device is additionally arranged in a terminal electric field, and a sealed partition is composed of at least one or more than one electric field channel; the side of each partition is provided with a shutter sealing baffle, the opening angle of which is controlled by an electric actuator, and during operation, one of the partitions is controlled to keep deashing in a seal way, and other partitions are in opening states; and a deashing mechanism is suspended on the top of the dust collector and corresponding to the channel of each sealed partition, corresponding groups of ash scraping plates are arranged according to the amount of the electric field channels of each partition, and the ash scraping plates arranged at two sides of each electric field channel are enabled to vertically reciprocate in a way of clinging to an anode plate. Due to the adoption of a partition-sealed deashing structure, the phenomenon of secondary dust raising caused by vibration deashing of the electric dust collector is effectively suppressed, meanwhile, the problem of back corona of a conversational electric dust collector to dust with high-ratio resistance is solved, the discharging rate at an outlet is remarkably reduced, and the dust collection efficiency of the dust collector is up to over 99.9%.

Description

technical field [0001] The invention relates to the technical field of electrostatic precipitators used in industries such as electric power, building materials, steel, chemical industry, etc., in particular to a partitioned airtight dust removal device for electrostatic precipitators that can effectively avoid back corona and suppress secondary dust. Background technique [0002] Electrostatic precipitator is a high-efficiency and energy-saving industrial waste gas treatment equipment. Its operating efficiency can reach more than 99.5%. It has many advantages such as stable operation, small maintenance, and low running resistance. It is one of the leading equipment in the industrial waste gas treatment industry. Conventional electrostatic precipitators mainly rely on the two systems of discharge electrode and dust collection electrode, that is, high-voltage ionization technology is used to ionize the air in the electric field through high-voltage static electricity (V = 72,0...

AI Technical Summary

Problems solved by technology

[0003] The dust cleaning methods used in the existing electrostatic precipitator include mechanical rapping, low-frequency sound wave cleaning, etc. Mechanical rapping usually includes a cathode line rapping device and an anode line rapping device in each electric field. There will be more serious dusting phenomenon in the cleaning process of similar cleaning methods, especially when low-frequency sound waves are used to clean dust. : That is, secondary dust and pollution are generated in the process of rapping and dust removal, and the ash on the dust collector cannot be completely removed, so that the dust removal efficiency of the electrostatic precipitator can only be maintained between 98.5% and 99.8%. When an electric field is rapped, it will drop even lower, so that it is difficult to guarantee the latest requirements of the national environmental protection standard

At present, the dust content index of national industrial waste gas emission has been raised from 300mg / Nm3 in the past to 50mg / Nm3, and this standard will be further improved in key cities in the future. Now, a few areas have raised this standard to below 30mg / Nm3. In this way, the characteristics of the secondary dust generated by the electrostatic precipitator have determined that its own performance cannot meet this environmental protection emission requirement. Therefore, the electrostatic precipitator is facing the danger of being eliminated by the industry, but there is no more ideal dust removal equipment that can be used as its substitute. product

Some enterprises have to replace electrostatic precipitators with cloth bag dust collectors and electric bag combined dust collectors. However, these two kinds of dust collectors have large running resistance, easy damage to the cloth bags, inconvenient maintenance and high operating costs, which bring many problems to users. inconvenient

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