Circulation fluidized dry flue gas desulfurizing process by adopting mixed feeding mode

A dry flue gas desulfurization and mixed feeding technology, applied in the field of dry flue gas desulfurization process and dry desulfurization system, can solve the problems of low concentration and affect the reaction efficiency, so as to increase the amount of feed and increase the amount of feed. The effect of uniformity and improved space utilization

Inactive Publication Date: 2004-07-28
WUHAN KAIDI ELECTRIC POWER CO LTD
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Problems solved by technology

Otherwise, the concentration of gas reactants is low (or vice versa) where the concentration of solid reactants is high. Once this happens, it will directly affect the reaction efficiency

Method used

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  • Circulation fluidized dry flue gas desulfurizing process by adopting mixed feeding mode
  • Circulation fluidized dry flue gas desulfurizing process by adopting mixed feeding mode
  • Circulation fluidized dry flue gas desulfurizing process by adopting mixed feeding mode

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, specifically illustrate embodiment, technological process and system arrangement structure of the present invention:

[0029] Such as figure 1 : The present invention includes a digestion reaction system for desulfurization agent preparation, a desulfurization reaction tower and a desulfurization reaction system, and a separation and recirculation system for external desulfurization agent particles.

[0030] In the digestion reaction system, the raw material feed pipe 10 for the desulfurizer and the recirculation pipe 13 of the recirculation material separated by the separation device 3 of the digestion system after passing through the digestion tower are combined outside the tower, and fed into the digestion system through a feed nozzle 28. Reaction tower 2.1 is the desulfurizer raw material quicklime warehouse. In the digestion reaction system, the separation device adopts two stages 3 and 4. There are also digestion t...

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Abstract

The present invention discloses a circulating fluidized dry flue gas desulfurizing process adopting mixed feeding mode. It combines the fresh feeding modes of desulfurization reaction system and digestion reaction system with respective recirculating feeding back mode, i.e. adopts a mixed feeding mode to mix the initial feeding material and system circulating material to feed them into reaction tower, and at the position of mixed feeding hole a diffusion fan is placed so as to ensure the dispersed uniformity of the material in the reaction tower and can meet the concentration distributing characteristics required for desulfurization chemical reaction to raise reaction tower space utilization rate and raise the desulfurization or digestion efficiency.

Description

technical field [0001] The invention relates to a dry-process flue gas desulfurization process in a mixed feeding mode, which belongs to the technical field of flue gas desulfurization, and in particular to a dry-process desulfurization system and process in flue gas discharged from various combustion equipment. Background technique [0002] At present, the treatment of sulfur dioxide generally adopts the wet lime-gypsum method (W-FGD) in foreign countries. Although the above-mentioned method has a good removal effect, it has huge investment, large water consumption, large floor area, complex system, There are a series of problems such as large resistance, complex structure, and the need to reprocess water. Compared with the conventional wet process, it has the following advantages: low investment cost; the desulfurization product is dry; there is no need to install a demister and flue gas reheater; the equipment is not easy to corrode; scaling and blockage are not easy to o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83
Inventor 林冲张泽李雄浩刘亚丽张颉胡永锋
Owner WUHAN KAIDI ELECTRIC POWER CO LTD
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