Desulfurization and denitrification device based on semi-dry flue gas treatment method

Abstract

The invention relates to the technical field of environmental protection, in particular to a desulfurization and denitrification device based on a semidry flue gas treatment method. The desulfurization and denitrification device comprises a desulfurizing agent supply unit, a desulfurizing agent reaction absorption unit and an ozone mixing reaction unit. The device has the beneficial effects that one set of device can be used for simultaneously purifying SO2, NOX, dust and other multi-component pollutants in the flue gas, so integrated desulfurization, denitrification and dust removal treatmentof the flue gas is realized; the whole process is conudcted in a dry state, no waste water is discharged, SO2, NOX and dust in flue gas can be removed, harmful substances such as HCl, HF and heavy metals can be effectively removed, and the whole desulfurization system and a chimney do not need to corrosion prevention treatment; ozone is easy to be decomposed into oxygen, and compared with SCR andSNCR denitration processes, NH3 escape is avoided in the invention; desulfurization and denitrification efficiency is high, and environmental protection requirements can be completely met; and different configurations are adopted for desulfurization and denitrification according to different working conditions, so thee desulfurization and denitrification deviceis wide in application range and canwell adapt to quantity fluctuation of flue gas and fluctuation of harmful ingredients such as SO2 and NOX.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a desulfurization and denitrification device based on a flue gas semi-dry method. Background technique [0002] The main component of pollutants in coal-fired boilers or smelting industries is SO 2 (including SO 3 ), NOx and dust. These pollutants are discharged into the atmosphere with the flue gas, which will seriously affect the air quality, and will also cause corrosion to the device, affecting the normal operation of the device. Therefore, the purification of flue gas from coal-fired boilers or smelting industries is the top priority of environmental protection. Contents of the invention [0003] The purpose of the present invention is to overcome the problems existing in the prior art, and provide a desulfurization and denitrification device based on the flue gas semi-dry method, which can solve the problems of the prior art at least to a certain extent...

AI Technical Summary

Problems solved by technology

These pollutants are discharged into the atmosphere with the flue gas, which will seriously affect the air quality, and will also cause corrosion to the device, affecting the normal operation of the device. Therefore, the purification of flue gas from coal-fired boilers or smelting industries is the top priority of environmental protection.

Images