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Twin tower circulating fluidized bed fume desulfurizing method and device

A circulating fluidized bed, flue gas technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of increased operating costs, large electricity or steam consumption, large volume of desulfurization towers, etc., and achieve desulfurization energy. Low consumption, high desulfurization efficiency and good fluidity

Inactive Publication Date: 2007-10-17
沙晓农
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  • Claims
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Problems solved by technology

On the one hand, this limits the further improvement of flue gas desulfurization efficiency, on the other hand, it consumes a lot of electricity or steam, which increases the operating cost
In addition, these existing technologies all send all the flue gas discharged from the combustion equipment into a desulfurization tower, resulting in a relatively large volume for the usual desulfurization tower

Method used

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  • Twin tower circulating fluidized bed fume desulfurizing method and device
  • Twin tower circulating fluidized bed fume desulfurizing method and device

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Embodiment approach

[0011] As shown in Figure 1, the device of the present invention mainly includes a desulfurization reaction main tower 3, a gas-solid separator 5 and an ash hopper 6, and the desulfurization reaction main tower 3 is connected with the gas-solid separator 5 by connecting the flue 4, and the An ash hopper 6 is arranged at the lower part of the solid separator 5, and a pneumatic chute 7 is arranged at the bottom of the ash hopper 6, and a desulfurization ash outlet 8 and a material return device 9 are arranged on the pneumatic chute 7, and the dirty flue gas is divided into two and separated from the The flue gas inlet 1 enters the desulfurization reaction main tower and the flue gas inlet 2 enters the ash hopper 6, which is the desulfurization reaction auxiliary tower. After the dirty flue gas is mixed and reacted with water, desulfurizing agent and circulating materials in the desulfurization reaction main tower, the acid gas in it is effectively removed, and the dirty flue gas ...

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Abstract

The invention relates to a double-tower cycle fluidized bed flue gas desulfurization method and a device, which comprises a desulfurization reaction tower, a sprayer, a digestor, a revert unit, a gas-solid separator and a ash hopper thereof, and is characterized in that the dirty flue gas discharged by combustion equipment is divided into two parts: wherein one part enters into the king tower, and the other part enter into the tail tower formed by the ash hopper of the gas-solid separator. The advantage is that the flue gas can move is a lower temperature in the desulfurization reaction king tower, the efficiency of desulfurization is high, and volume of the king tower is small; the cycle ash can be heated effectively in the ash hopper, has a good fluidity without the defect of glue, fouling and corrosion, and the reliability of the device is well; and the invention can greatly reduce the electric heating power and energy consumption of desulfurization.

Description

technical field [0001] The present invention relates to a flue gas desulfurization technology and device, in particular to a circulating fluidized bed flue gas desulfurization method and device for removing sulfur oxide and other harmful acid gases in flue gas discharged from boilers or other combustion equipment , such as HCL, HF, etc. Background technique [0002] In the usual circulating fluidized bed flue gas desulfurization technology, such as CFB-FGD, RCFB-FGD and NID technologies, slaked lime and water are sent to the desulfurization tower to mix and react with the flue gas, and the desulfurization products are separated by gas and solid Separation from the container, falling into the ash hopper, most of them are sent back to the desulfurization tower as circulating material through the pneumatic chute and the return device to continue to participate in the reaction. In the above technologies, as the temperature of the flue gas decreases and gradually approaches the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83B01D53/50
Inventor 沙晓农
Owner 沙晓农
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