Double-cyclone dust-removing and demisting device

A technology of mist eliminator and cyclone is applied in the field of flue gas wet desulfurization device, which can solve the problems of low demisting efficiency, and achieve the effect of increasing demisting effect, reducing investment cost and operating cost, and reducing secondary entrainment.

Pending Publication Date: 2018-05-18
MCC CAPITAL ENGINEERING & RESEARCH
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The invention provides a dust and mist eliminator, also known as a double-cyclone dust and mist eliminator, to solve the problem of low demisting efficiency of the existing cyclone demister

Method used

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Embodiment Construction

[0038] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.

[0039] Such as figure 1 and Figure 6 As shown, the dust and mist eliminator of the present invention includes a venturi-shaped cyclone cylinder 1 , a primary cyclone unit 2 , and a secondary cyclone unit 4 . A throat pipe 5 is arranged coaxially in the middle and upper part of the swirl tube 1 in the form of a Venturi tube, the primary swirl unit 2 is coaxially arranged at the bottom air inlet in the swirl tube 1, and the secondary swirl unit 4 It is coaxially arranged in the throat pipe 5 .

[0040] Such as figure 2 , image 3 and Figure 4 As shown, the primary swirl unit includes a guide cone 21 , a guide vane 22 , a primary swirl vane 23 and a blind cylinder 24 . The tip of the diversion cone 21 is downward, and the top of the blind cylinder is a closed en...

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Abstract

The invention provides a double-cyclone dust-removing and demisting device. The double-cyclone dust-removing and demisting device comprises a cyclone cylinder with a venturi tube shape, a primary cyclone unit and a secondary cyclone unit, wherein the middle part of the cyclone cylinder is a throat pipe; the primary cyclone unit is coaxially arranged at a bottom gas inlet in the cyclone cylinder; the secondary cyclone unit is coaxially arranged in the throat pipe; the secondary cyclone unit comprises a driven free type impeller arranged in the throat pipe. The double-cyclone dust-removing and demisting device provided by the invention is simple in structure and high in reliability; various manners including bent curved surface separation, inertial separation, centrifugal separation and thelike are combined to treatment flue gas for a plurality of times; small-grain dust and fog drops with the size of 5mu m or lower can be efficiently removed and a demisting effect of a desulfurizationtower is increased; the resistance loss also can be reduced, and the investment cost and the operation cost of the desulfurization tower are reduced; the double-cyclone dust-removing and demisting device provided by the invention can be applied to the wet type desulfurization tower.

Description

technical field [0001] The invention relates to a device for removing dust and mist from wet flue gas containing dust and mist, in particular to a flue gas wet desulfurization device, that is, a double-cyclone dust and mist remover. Background technique [0002] At present, limestone-gypsum wet flue gas desulfurization technology is widely used in my country to remove SO contained in the flue gas of coal-fired power plants. 2 pollutants. The technology is more mature, SO 2 The removal rate is high, but most desulfurization devices do not use a flue gas heat exchanger (GGH) during operation, and the outlet flue gas is prone to droplet entrainment, especially when the flow rate of the flue gas is high, the amount of mist carried by the flue gas It will intensify and form "fog" with a particle size of 2-60 μm. "Fog" not only contains water, but also dissolves sulfuric acid, sulfate, SO 2 and other fine particles. Existing desulfurization and mist removal systems include tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D45/14
CPCB01D45/14
Inventor 邱明英周向王建华崔岩任乐
Owner MCC CAPITAL ENGINEERING & RESEARCH
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