Ammonia desulphurization ultra-clean emission device and process

Abstract

The invention belongs to the technical field of environmental protection of industries like electric power, metallurgy and chemical industry, and particularly relates to an ammonia desulphurization ultra-clean emission device. The ammonia desulphurization ultra-clean emission device comprises a sectional type desulfurizing tower and a wet type electrostatic precipitator, the sectional type desulfurizing tower comprises a tower body, the tower body is provided with a flue gas inlet, a flue gas outlet is arranged at the top part of the tower body, and the device further comprises a concentrationcycling tank and an ammonium hydroxide storage tank; a slurry pond, a concentration section, an absorption section and a demisting section are sequentially arranged in the tower body from bottom to top; the flue gas inlet is located on the concentration section, the flue gas outlet is communicated with the wet type electrostatic precipitator; the ammonium hydroxide storage tank is communicated with the slurry pond; an inlet of the concentration cycling tank is communicated with the slurry pond and the concentration section at the same time, and an outlet of the concentration cycling tank is communicated with the concentration section. The invention further provides an ammonia desulphurization ultra-clean emission process. The ammonia desulphurization ultra-clean emission device and the ammonia desulphurization ultra-clean emission process are quite high in desulfuration efficiency and dust collection efficiency, the ultra-clean emission requirement of the ammonia desulphurization technology is reached, the system is simple, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of environmental protection in industries such as electric power, metallurgy, and chemical industry, and specifically relates to an ammonia-based desulfurization ultra-clean emission device and a process. Background technique [0002] In recent years, the state has continued to increase efforts to control air pollution, and the quality of the air environment has generally improved. However, smog still occurs frequently in many places in China, and the situation of air pollution control is still severe. [0003] Ammonia desulfurization technology is widely used in the field of flue gas treatment due to its fast gas-liquid reaction speed, no waste water and waste residue discharge, and the desulfurization product ammonium sulfate has high economic value, making outstanding contributions to atmospheric environment treatment. [0004] Because the ammonia desulfurization method uses ammonia water as a desulfuriza...

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Problems solved by technology

[0005] In order to overcome the shortcomings of the above existing technologies, the purpose of the present invention is to provide an ammonia-based desulfurization ultra-clean emission device and process, which can effectively solve the problems of ammonia-based desulfurization flue gas tailing and particulate matter not up to standard

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