Ammonia desulphurization and denitration technology and device

Abstract

The invention provides an ammonia desulphurization and denitration technology and device, and relates to the field of prevention and treatment of atmospheric pollution. The device comprises a desulphurization and denitration tower, which is respectively communicated with an induced draft fan of leading in a raw smoke, and a chimney of discharging a clean smoke, wherein the bottom of the desulphurization and denitration tower is communicated with a circulating pool and an oxidant pool; the circulating pool is communicated with the desulphurization and denitration tower through a crystallization pump and a circulating pump; the circulating pool is communicated with an oxidation air blower; the oxidant pool is communicated with the desulphurization and denitration tower through an oxidant pump; the device also comprises a hydrocyclone; the upper part of the hydrocyclone is communicated with the circulating pool through the crystallization pump; the lower part is respectively communicated with a liquid storage tank and a centrifugal dehydrator; the centrifugal dehydrator is also respectively communicated with the liquid storage tank and a drying system. By adopting the ammonia desulphurization and denitration technology and device, the desulphurization technology is effectively combined with the denitration technology; desulphurization and denitration equipment is integrated into a whole. Therefore, smoke desulphurization can be achieved; smoke denitration also can be carried out; re-investment on the denitration technology is avoided; the floor area is saved; the operation cost is also reduced.

Description

technical field [0001] The invention relates to the field of air pollution prevention and control, in particular to an ammonia 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 photochem...

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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