Flat-plate pneumatic combined type demisting separation device

Abstract

The invention relates to a flat-plate pneumatic combined type demisting separation device, belonging to the field of wet flue gas desulphurizing and demisting devices. The flat-plate pneumatic combined type demisting separation device comprises a circular barrel, a first demisting device and a second demisting device, wherein the first demisting device and the second demisting device are sequentially arranged in the circular barrel from bottom to top along the longitudinal direction of the barrel; the first demisting device comprises blade fixtures and a plurality of sinusoidal demisting blades; the second demisting device comprises a blade locating cylinder, a blind plate and a plurality of flat-plate type swirl blades. The flat-plate pneumatic combined type demisting separation device has the advantages of being simple and practical in structure, convenient to operate, low -cost, convenient to popularize, and the like.

Description

technical field [0001] The invention relates to a flat-plate pneumatic combined demisting and separating device, which belongs to the field of wet flue gas desulfurization and demisting devices. Background technique [0002] Limestone-gypsum wet flue gas desulfurization technology is currently the main technical measure used in my country to control flue gas pollution containing a large amount of sulfur dioxide emitted by coal-fired power plants. This technology is the most mature and widely used desulfurization technology at home and abroad, and its domestic application has reached above 95. Limestone-gypsum wet flue gas desulfurization process technology is to use limestone desulfurizer to spray and absorb coal-fired boiler flue gas containing sulfur dioxide harmful gas, and to purify flue gas by absorbing harmful gas through desulfurizer slurry and flue gas contact reaction. [0003] There are still many mist and dust in the purified flue gas after spraying and absorption...

AI Technical Summary

Problems solved by technology

However, due to the high flue gas flow rate in the system, the flue gas contains a large number of large-size particles, and the flat tube type mist eliminator will cause local blockage, resulting in uneven distribution of flue gas flow rate, which will affect the use of the downstream roof type mist eliminator. effect, resulting in poor defogging effect of the demister and failing to meet the national environmental protection requirements

In addition, due to the surface tension factor, the uneven coverage of the flushing water film, the elastic collision between the liquid droplets and the plate, and the re-mixing into the flue gas are one of the key reasons for the decline in the demisting efficiency.

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