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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  • Abstract
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  • Claims
  • Application Information

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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 e

Method used

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

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Example Embodiment

[0015] Such as figure 1 The main body of the chlorine dioxide gas-phase oxidation desulfurization and denitration integrated device of the present invention is an oxidation absorption tower 2. The main body includes a two-stage tower body. The bottom of the tower body is provided with a liquid material pool 7 located in the liquid material pool. 7 The upper side wall of the tower body is provided with a flue gas inlet 1; above the flue gas inlet 1, there is a desulfurization spray pipe 10, and a chlorine dioxide vaporization spray pipe 11 is provided above the desulfurization spray pipe 10; in the chlorine dioxide vaporization spray Above the tube 11 is a partition 3 that separates 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 denitration tower section. Above the partition 3 is a denitration spray pipe. 12; The partition 3 is set at an oblique angle, the side wa...

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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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