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Single-tower double-loop limestone-gypsum wet-method desulfuration device and method

A wet desulfurization, double-loop technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as changing the desulfurization operation mode of the absorption tower, and achieve the reduction of system operating costs, good dual-use, and prevention of wall damage. The effect of the flow effect

Inactive Publication Date: 2014-12-03
JIANGSU FENGYE TECH ENVIRONMENTAL PROTECTION GRP CO LTD
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AI Technical Summary

Problems solved by technology

[0009] The single-tower double-circuit limestone-gypsum wet desulfurization device and desulfurization method with high desulfurization efficiency described in the present invention can meet the requirements of power plant flue gas emission standards, and at the same time solve the problem that the desulfurization operation mode of the absorption tower cannot be changed according to the change of coal type The problem of energy-saving operation of the system reduces the operating cost. In addition, the device and method of the present invention also realizes the uniform distribution of the flue gas in the absorption tower system, avoiding the reduction of desulfurization efficiency caused by the escape of flue gas caused by the wall flow effect

Method used

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  • Single-tower double-loop limestone-gypsum wet-method desulfuration device and method

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Embodiment 1

[0039] Example 1 Single tower double loop limestone-gypsum wet desulfurization device

[0040] According to the attached figure 1 In the single-tower double-loop limestone-gypsum wet desulfurization device of the present invention shown, the first-level spray system 3, the double-loop baffle 5, the second-level spray system 6 and the absorption tower outlet 9 are in the absorption tower Set in order from bottom to top. The first-level spray system 3 includes a slurry oxidation tank 1, a lower circulation spray layer 4 and a lower circulation absorption tower inlet 11. The slurry oxidation tank 1, a lower circulation absorption tower inlet 11 and a lower circulation spray layer 4 are arranged from bottom to top At the lower part of the absorption tower, the slurry oxidation tank 1 and the lower circulating spray layer 4 are connected by a lower circulating slurry circulating pump 2. The secondary spray system 6 includes the upper circulation spray layer 7, the upper circulation a...

Embodiment 2

[0041] Example 2 Single tower double loop limestone-gypsum wet desulfurization method

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Abstract

The invention discloses a single-tower double-loop limestone-gypsum wet-method desulfuration device and a desulfuration method, comprising a first-stage spraying system 3, a double-loop partition plate 5, a second-stage spraying system 6 and an absorption tower outlet 9 which are arranged in an absorption tower in sequence from bottom to top. The single-tower double-loop limestone-gypsum wet-method desulfuration device with relatively high desulfuration efficiency and the desulfuration method can meet the requirement of a smoke discharging standard of a power plant; meanwhile, the problem that energy-saving running of a system cannot be realized by changing a desulfuration running mode of the absorption tower according to the change of the type of coals is solved; the running cost is lowered; furthermore, the device and the method also realize uniform distribution of smoke in an absorption tower system, and the phenomenon that the desulfuration efficiency is reduced due to escape of the smoke caused by a wall flow effect is avoided.

Description

Technical field [0001] The invention relates to a limestone-gypsum wet desulfurization device and a desulfurization method, in particular to a single-tower double-circuit limestone-gypsum wet desulfurization device and a desulfurization method. Background technique [0002] Currently, power plant flue gas desulfurization methods mainly include: circulating fluidized bed flue gas semi-dry method, seawater method, wet ammonia method, limestone / lime-gypsum wet method. Among them, the limestone / lime-gypsum wet flue gas desulfurization process is the most mature and widely used flue gas desulfurization technology. The spray tower is the most widely used tower structure in limestone / lime-gypsum wet flue gas desulfurization. Through the downward spraying of multiple spray layers (two-way nozzles can spray upwards and downwards at the same time), it is in countercurrent contact with the flue gas to absorb Where SO 2 Because there are multiple spray layers, the spray coverage on the sect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50
Inventor 杨宝成许德富华桂宏刘磊马以青
Owner JIANGSU FENGYE TECH ENVIRONMENTAL PROTECTION GRP CO LTD
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