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Chlorine dioxide gas-phase oxidation desulfurization and denitrification integrated device and process thereof

A chlorine dioxide, oxidative desulfurization technology, applied in gas treatment, chemical instruments and methods, separation methods, etc., can solve the problems of oxidation speed and oxidation efficiency, increase the consumption of CLO oxidant, etc., to achieve simple implementation, convenient operation, equipment, etc. The effect of less investment

Pending Publication Date: 2017-07-25
包训祥
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AI Technical Summary

Problems solved by technology

[0006] In a word, the process of chlorine dioxide liquid phase oxidation of NO, in addition to NO is difficult to dissolve in water, so that the oxidation speed and oxidation efficiency are seriously affected, in the liquid phase CLO 2 Oxidation of NO is also affected by SO 2 Strong competition for oxidation will increase CLO 2 oxidant consumption

Method used

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  • Chlorine dioxide gas-phase oxidation desulfurization and denitrification integrated device and process thereof

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Embodiment Construction

[0015] Such as figure 1 , the chlorine dioxide gas-phase oxidative desulfurization and denitrification integrated device of the present invention, its main body is an oxidation absorption tower 2, and the main body includes a two-stage tower body, and a liquid material pool 7 is arranged at the bottom of the tower body, which is located in the liquid material pool The side wall of the tower body above 7 is provided with a flue gas inlet 1; a desulfurization spray pipe 10 is arranged above the flue gas inlet 1, and a chlorine dioxide gasification spray pipe 11 is arranged above the desulfurization spray pipe 10; Above the pipe 11, there is a partition 3 that divides the inner cavity of the tower into upper and lower parts. The lower part is the desulfurization and NO gas phase oxidation tower section, and the upper part is the denitrification tower section; above the partition 3, there is a denitrification spray pipe 12. The partition 3 is set at an inclined angle, and the deni...

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Abstract

The invention discloses a chlorine dioxide gas-phase oxidation desulfurization and denitrification integrated device and process thereof. The device comprises a two-stage type tower body, wherein a liquid tank is arranged at the bottom of the inner part of the tower body; a flue gas inlet is formed in the side wall of the tower body positioned above the liquid tank; a desulfurization spraying pipe, a chlorine dioxide gasification spraying pipe and a partition plate for dividing the inner cavity of the tower body into an upper part and a lower part and is arranged at an inclined angle; the chlorine dioxide gasification spraying pipe is connected with a chlorine dioxide preparation device; a denitrification spraying pipe is connected with a crystallization tank; and the crystallization tank is connected with a flue gas inlet by a crystallization slurry flow return pipe. According to the device and the process provided by the invention, NO is effectively oxidized by adopting a chlorine dioxide gas phase; meanwhile, SO2 and NOX as well as harmful substances such as powder, mercury and the like in the flue gas are adsorbed and removed; and the device and the process provided by the invention has the advantages of simple process, less equipment investment, low operation cost, convenient operation and the like.

Description

technical field [0001] The present invention relates to a flue gas desulfurization and denitrification device and its technology, in particular to a device based on chlorine dioxide gas-phase oxidation and lye (calcium-based, ammonium-based, sodium-based) absorption to simultaneously remove SO from flue gas 2 and NO X The wet integrated desulfurization and denitrification process. Background technique [0002] At present, the chemical oxidation wet desulfurization and denitrification integrated process includes gas phase oxidation and liquid oxidation. NO is difficult to dissolve in water. The liquid phase oxidation method is a dissolution reaction absorption process controlled by gas film. The liquid phase oxidation process of NO has a slow reaction absorption rate and a low removal rate. However, there is no mass transfer barrier in the gas phase oxidation method, and the oxidation process of NO can be fast and efficient. Therefore, the gas phase oxidation method will h...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/75B01D53/76B01D53/73B01D53/50B01D53/56B01D9/02
CPCB01D9/02B01D53/507B01D53/56B01D53/73B01D53/75B01D53/76B01D53/78B01D2251/304B01D2251/108B01D2251/60B01D2251/404B01D2258/0283B01D2257/404B01D2257/302
Inventor 包训祥
Owner 包训祥
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