An electrostatic agglomeration cyclone defogging device and its application

Abstract

The invention relates to an electrostatic agglomeration cyclone demisting device. The device comprises electrostatic agglomeration cyclone demisting units which are tightly arranged in a tower, wherein each electrostatic agglomeration cyclone demisting unit comprises a cylinder, a guide plate, a metal discharge wire, a lower cylinder, an upper cylinder, a high compression ring, a nozzle and guide blades. According to the device, the ultimate grain size of the demister can be reduced, an effect of reducing the droplet concentration at the outlet of the demister is achieved, to-be-treated flue gas enters the device from bottom to top, and dust droplets in the flue gas are negatively charged while passing through the lower cylinder and agglomerate and grow up with positively charged spray mist while passing through the upper cylinder, so that the droplets in the flue gas are separated from the flue gas while passing through the guide blades according to the pneumatic cyclone principle.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and relates to a flue gas demisting device at the outlet of an absorption tower in wet flue gas desulfurization technology, in particular to an electrostatic agglomeration swirling flow defogging device and its application. Background technique [0002] As the country pays more and more attention to environmental protection issues, the country has issued the most stringent flue gas environmental protection standards in history in 2015, one of which requires the dust concentration of the net flue gas outlet to reach 5mg / Nm 3 Next, in the existing wet desulfurization technology, the flue gas outlet carries a large amount of water, and the particles dissolved and suspended in the water are also entrained, which makes it difficult to meet the standards of this environmental protection standard. To solve this problem, the first thing to bear the brunt is to reduce the concen...

AI Technical Summary

Problems solved by technology

[0003] In order to reduce the discharge of droplets, the existing technical method is to install a demister on the top of the absorption tower. The existing demister is mostly in the form of a folded plate, and its demisting effect is better, and the limit particle size can reach about 25 microns. It is restricted by secondary entrainment, so it is very difficult to further reduce its limiting particle size

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