Multi-stage liquid curtain spray washing flue gas desulfurizing deivce

A desulfurization device and flue gas technology, applied in the direction of dispersed particle separation, chemical instruments and methods, separation methods, etc., can solve the problems of short mixing time of desulfurization liquid and flue gas, low desulfurization efficiency, etc., to facilitate installation and maintenance, Effects of improving utilization, enhancing turbulence and gas-liquid mass transfer

Inactive Publication Date: 2003-05-28
EAST CHINA ELECTRIC POWER TEST & RES INST +1
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Problems solved by technology

For coal-fired boilers, FGD is the main method to control sulfur dioxide (SO2) emissions. At present, the wet flue gas desulfurization device, which is the most widely used but requires a large investment, uses desulfurization liquid to spray from top to bottom step by step, and the flue gas flows from bottom to bottom. However, the device that rises vertically and mixes with desulfurization liquid to achieve desulfurization has the disadvantage of short mixing time of desulfurization liquid and flue gas, and low desulfurization efficiency.

Method used

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  • Multi-stage liquid curtain spray washing flue gas desulfurizing deivce
  • Multi-stage liquid curtain spray washing flue gas desulfurizing deivce
  • Multi-stage liquid curtain spray washing flue gas desulfurizing deivce

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Embodiment Construction

[0008] Depend on figure 1 As shown, the multi-stage liquid curtain spray washing type flue gas desulfurization device includes valve 4, circulation pump 3, desulfurization liquid pool 2, overflow pool 1, regulating valve 7, flow meter 8, desulfurization liquid inlet pipe 5, desulfurization liquid The return pipe 16, the barrel body 9, the desulfurization liquid spray pipe 10, the flue gas inlet 15, and the flue gas outlet 12 are characterized in that there are multi-stage desulfurization pipes corresponding to the multi-stage desulfurization liquid spray pipe 10 in the barrel body 9. The tower, the desulfurization tower adopts the lower stop ring 6 and the top cover 11 which can not only prevent the short circuit of the flue gas, but also enhance the gas-liquid mixing to form an inner stop structure. The lower stop ring 6 and the top cover 11 are connected by a bracket 14, and the bracket 14 Stainless steel flat steel is used. In order to facilitate installation and maintenanc...

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Abstract

A flue gas desulfurizing apparatus with multi-stage liquid curtain, spraying and washing is characterized that a multi-stage desulfurizing tower correspondent with multi-stage desulfurizing liquid spraying tubes is arranged in a cylindrical body, said desulfurizing tower has an internal barrier structure consisting of lower ring barriers and top covers, the flue gas flows from bottom to top, and the desulfurizing liquid flows from top to bottom. Its advantages are high mixing effect and high utilization rate of desulfurizing liquid.

Description

Technical field: [0001] The invention relates to a multi-stage liquid curtain spray washing type flue gas desulfurization device in the technical field of flue gas desulfurization. Background technique: [0002] Post-combustion desulfurization, that is, post-combustion flue gas desulfurization technology (FGD) is currently recognized as the most widely used and most efficient desulfurization technology, and is an important means to control sulfur dioxide emissions, prevent air pollution, and protect the environment. For coal-fired boilers, FGD is the main method to control sulfur dioxide (SO2) emissions. At present, the wet flue gas desulfurization device, which is the most widely used but requires a large investment, uses desulfurization liquid to spray from top to bottom step by step, and the flue gas flows from bottom to bottom. However, the device that rises vertically and mixes with desulfurization liquid to achieve desulfurization has the disadvantage of short mixing t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/50B01D53/78
Inventor 潘卫国
Owner EAST CHINA ELECTRIC POWER TEST & RES INST
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