Process device of coke oven fume denitrification, desulfuration and reheating system

A technology for a process device and a flue gas reheater, which is applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of system corrosion, low denitration and desulfurization efficiency, and high operating costs

Inactive Publication Date: 2015-04-29
大连贝斯特环境工程设备有限公司
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AI Technical Summary

Problems solved by technology

[0003] The invention rationally combines and complements the SCR denitration process device, the wet desulfurization process device and the GGH flue gas heat exchange device, fully utilizes the heat energy of the high-temperature flue gas itself, adopts the principle of heat exchange, and utilizes the GGH reheating de

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  • Process device of coke oven fume denitrification, desulfuration and reheating system

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specific Embodiment

[0020] The flue gas from the coke oven first enters the SCR denitrification reactor 1 for denitrification, and the hot flue gas after denitrification enters the GGH flue gas reheater 2 and the wet flue gas after desulfurization in the desulfurization tower 3 for heat exchange. After -350°C drops to 150-160°C, it is pressurized by booster fan 9 and then enters desulfurization tower 3 for desulfurization. The wet flue gas at the outlet of desulfurization tower 3 enters the GGH flue gas reheater and changes heat from 70-80°C to about 160°C. The gas enters the chimney 11 for discharge. The flue gas of the whole system is switched through the flue gas switching valve 10, that is, when desulfurization maintenance or power failure occurs, the flue gas after denitration is directly discharged into the chimney 11 through the switching valve; when the SCR denitrification reactor is poisoned by flue gas tar, etc. The on-line reproduction is switched by the flue gas switching valve 10 . ...

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Abstract

The invention provides a process device of a coke oven fume denitrification, desulfuration and reheating system. The process device consists of an SCR denitrification reactor (1), a GGH fume reheater (2), a desulfuration tower (3), an ammonia water evaporator (4), an ammonia air mixer (5), a dilution fan (6), an ammonia water dilution tank (7), an ammonia pump (8), a pressurizing fan (9), a fume switching valve (10), a chimney (11) and a pipeline which are connected together. The process device has the advantages that waste ammonia water and waste heat of fume in factories can be sufficiently utilized, the purposes of denitrification and desulfuration are achieved, the denitrificatio and desulfuration efficiency is improved, the operation cost is lowered, system corrosion is avoided, and the like.

Description

technical field [0001] The invention belongs to the technical field of coke oven flue gas treatment, and relates to a coke oven flue gas denitrification, desulfurization and reheating system process device. It is mainly used in the denitrification and desulfurization of flue gas emitted by coke ovens in the coking industry and other industrial kilns. technical background [0002] A large amount of raw coal gas is produced during the production process of coke ovens, and the flue gas discharged after burning through the heating furnace contains a large amount of sulfur dioxide and nitrogen oxide pollutants that pollute the atmospheric environment. The flue gas emitted during the production process of other kilns also has the same pollution problem . With the country's increasing emphasis on air pollution control and the improvement of emission standards, the pollution control of coke oven flue gas and other kiln flue gas is imminent. Due to the particularity of coke ove...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/60
Inventor 曲芳
Owner 大连贝斯特环境工程设备有限公司
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