Thermal power plant dust removal type sand blasting construction method

Abstract

The invention discloses a thermal power plant dust removal type sand blasting construction method. A dust removal device is installed in the step S3. The dust removal device comprises a shell mechanism and a dust removal mechanism. The shell mechanism comprises a barrel, a cone barrel, an overflow pipe, a water drainage pipe, a manhole door, a rainproof cover, a dust filtration net, a bottom plate, a water supplementation pipe, a liquid level meter and a connection pipe. The dust removal mechanism comprises a dust removal pipe, a spiral steel pipe, a square pipe, a flange, an axial flow fan, astainless steel screen and a motor. In the use process of the dust removal device, air, containing dust, in a sand blasting chamber is discharged into the dust removal mechanism through the axial flow fan, the dust in the air is filtered out through a water film in the dust removal mechanism, and the air is then discharged out through the spiral steel pipe and the square pipe. A water ring throttling device is installed at an outlet of the square pipe, water spray is formed by water drops carried by air flow during air discharge under the effect of the water ring throttling device, secondaryfiltration of the discharged air is completed, the dust in the air is filtered out through a water film in the water ring throttling device, and the dust deposits to the bottom of the barrel and is then discharged to a sedimentation tank through a drain valve.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and dedusting, in particular to a dust-removing sandblasting construction method of a thermal power plant. Background technique [0002] Sand blasting is one of the methods for on-site derusting of thermal power plant pipelines and equipment. Sandblasting and derusting is powered by compressed air to form a high-speed jet beam to spray materials (garnet sand, copper ore sand, quartz sand, corundum, iron sand, Hainan sand) to the surface of the workpiece to be treated at high speed, so that the surface of the workpiece Changes in the appearance or shape of the outer surface; in recent years, with the increasing emphasis on environmental protection, traditional open-air sandblasting operations have been expressly prohibited; [0003] Chinese invention patent CN104907940A discloses a sandblasting and dust removal equipment, which includes a sandblasting chamber body. The equipment ...

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Problems solved by technology

[0006] The traditional sandblasting operation will pollute the environment, and Sinotrans entrusted processing will increase the construction cost, and it cannot solve the problem of vehicle transportation, reduce dust and vehicle exhaust emissions, that is, it cannot meet the construction quality and progress requirements, and does not meet the needs of environmental protection. , leading to waste of resources

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