Alkaline-method wet-type desulfurization denitration technology and device

Abstract

The invention provides an alkaline-method wet-type desulfurization denitration technology and a device, and relates to the atmospheric pollution control field. The device comprises a desulfurization denitration tower, the desulfurization denitration tower is respectively communicated with an induced draft fan and a chimney, and then communicated with a slurry pool, the bottom of the desulfurization denitration tower is communicated with a circulating pool and an oxidation agent pool, the circulating pool is communicated with the desulfurization denitration tower through a crystallization pump, a desulfurization circulating pump and a denitration circulating pump, the circulating pool is also respectively communicated with an oxidation air blower, a sodium hydroxide pool and the slurry pool, the oxidation agent pool is communicated with the desulfurization denitration tower through an oxidation agent pump, the device also comprises a cyclone, the upper part of the cyclone is communicated with the circulating pool through the crystallization pump, and the lower part of the cyclone is respectively communicated with a liquid storage tank and a vacuum belt dewatering machine. According to the alkaline-method wet-type desulfurization denitration technology and the device, desulfurization and denitration technologies are effectively combined together, and desulfurization denitrification equipment is integrated as a whole, so that flue gas desulfurization and flue gas denitrification both can be achieved, re investing on a denitration technology can be avoided, the occupied area is saved, and the cost of operation is reduced.

Description

technical field [0001] The invention relates to the field of air pollution prevention and control, in particular to an alkaline wet desulfurization and denitrification process and device. Background technique [0002] The environment is an issue related to sustainable economic development, and the protection of the natural and ecological environment on which human beings depend has attracted widespread attention from all countries. my country is a large coal-burning country. Sulfur dioxide emitted during coal combustion is one of the main air pollutants, which seriously affects the environment and threatens human health. Therefore, reducing sulfur dioxide emissions is one of the primary goals of improving the environment in my country. In addition, nitrogen oxides have also become a major pollutant faced by our country. Sulfur dioxide and nitrogen oxides are one of the main causes of acid rain and acid fog. The combination of nitrogen oxides and nitrogen hydrides forms phot...

AI Technical Summary

Problems solved by technology

However, my country's flue gas denitrification work started late, and the technology is relatively immature, and the denitrification process and equipment currently used are all operated independently, which cannot be effectively combined with the desulfurization process and equipment, so that denitrification must prepare new independent equipment , occupies a large area, resulting in a substantial increase in corporate costs

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