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

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...

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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 device to convert the desulfurized Wet flue gas reheating provides a process device for coke oven flue gas denitrification and desulfurization and reheating system, which solves the problems of low denitrification and desulfurization efficiency, high operating cost, and system corrosion of coke oven flue gas in the past

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