Dedusting and demisting appliance for wet desulfurization and electromechanical-coupling wet dedusting and demisting device

Abstract

The invention relates to a dedusting and demisting appliance for wet desulfurization and an electromechanical-coupling wet dedusting and demisting device. The dedusting and demisting appliance for wet desulfurization comprises multistage mechanical dedusting and demisting devices and wet electric dedusting devices, wherein one multistage mechanical dedusting and demisting device and one wet electric dedusting device are connected in series to form an electromechanical wet dedusting and demisting unit; the multistage mechanical dedusting and demisting device is positioned on the lower side of the wet electric dedusting device; the cross-section shape and size of the multistage mechanical dedusting and demisting device are matched with those of the wet electric dedusting device; and the number of the electromechanical wet dedusting and demisting units arranged in parallel is selected according to the quantity of the flue gas to be treated. The dedusting and demisting appliance for wet desulfurization and electromechanical-coupling wet dedusting and demisting device enhance the dedusting and demisting efficiency, and are convenient to use and low in cost.

Description

technical field [0001] The present application relates to the technical field of desulfurization and dust removal, in particular to a dust and mist removal device for wet desulfurization and an electromechanical coupling wet dust and mist removal device. Background technique [0002] At present, empty tower spraying limestone wet desulfurization technology is widely used in China for the control of flue gas or industrial tail gas SO2 emission. After the flue gas is cleaned and desulfurized by wet spraying in the empty tower, it is necessary to install a demister to remove the tiny droplets produced during the spraying process. As far as the current actual situation is concerned, whether it is a flat plate demister or a ridge demister, for droplets less than 5um and dust less than 5um in the flue gas, as well as sulfate, sulfite, and aerosols that constitute PM2.5 The removal efficiency of tiny particles such as nitrate and nitrite is difficult to meet the environmental prot...

AI Technical Summary

Problems solved by technology

[0004] 1. The equipment is huge. If it is built on the upper part of the original desulfurization tower, the added load will be large, and the foundation of the original absorption tower needs to be reinforced

[0005] 2. Due to the requirements of flue gas flow rate and residence time, it is generally necessary to expand the diameter and height of the absorption tower, and the transformation workload is huge

[0006] 4. If it is built separately, it needs to have a large construction space, and it is difficult to transform the existing projects and many other problems

[0007] 5. The initial investment is high, the maintenance workload is heavy, and the operation energy consumption is high

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