Cement furnace coal-fired flue gas powerful denitration, sulfur fixation and purification system and process

Abstract

The invention discloses a cement furnace coal-fired flue gas powerful denitration, sulfur fixation and purification system and process. The cement furnace coal-fired flue gas powerful denitration, sulfur fixation and purification system comprises a cooling and dedusting device, a catalytic denitration device and a hazardous substance absorbing and removing device. The cement furnace coal-fired flue gas powerful denitration, sulfur fixation and purification process comprises applying a powerful denitration and sulfur fixation agent. Coal-fired flue gas is inlet via the flue gas inlet of the cooling and dedusting device, the flue gas outlet of the cooling and dedusting device is connected to the flue gas inlet of the catalytic denitration device, and the flue gas outlet of the catalytic denitration device is connected with the flue gas inlet of the hazardous substance absorbing and removing device; the coal-fired flue gas is processed through multi-stage filtering and spraying, is in full contact and reaction with the powerful denitration and sulfur fixation agent, and purified flue gas can be discharged via the flue gas outlet of the hazardous substance absorbing and removing device. The cement furnace coal-fired flue gas powerful denitration, sulfur fixation and purification system and process can rapidly remove nitrogen and sulfur oxides as well as other toxic and hazardous waste gas in the flue gas to meet the limiting value regulated by environmental protection administration, so that the cement furnace coal-fired flue gas powerful denitration, sulfur fixation and purification system and process is applicable to cement furnace coal-fired flue gas pollution treatment. The cement furnace coal-fired flue gas powerful denitration, sulfur fixation and purification systemand process has the advantages of being simple in process, less in applied equipment, low in investment and good in denitration and sulfur fixation effects.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, in particular to a powerful denitrification and sulfur fixation process technology for coal-fired flue gas of cement kilns. Background technique [0002] With the continuous deepening of environmental governance, coal-burning pollution in cement kilns has been effectively controlled. However, the existing denitrification and sulfur fixation technology has complicated process, high investment and low efficiency, and it is difficult to adapt to the stricter environmental protection requirements of cement kilns. Therefore, inventing a new powerful denitrification and desulfurization technology with high denitrification efficiency, simple process and suitable for use in cement kiln systems is a subject that needs to be seriously solved. Contents of the invention [0003] The purpose of the present invention is to provide a new technology for strong denitrification and desul...

AI Technical Summary

Problems solved by technology

However, the existing denitrification and sulfur fixation technology has complicated process, high investment and low efficiency, and it is difficult to adapt to the stricter environmental protection requirements of cement kilns.

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