Flue gas denitration treatment device of cement grinding system

Abstract

The invention discloses a flue gas denitration treatment device of a cement grinding system. The device comprises a GGH flue gas heat exchanger, a low-temperature catalyst SCR reactor and a variable-frequency fan, wherein the GGH flue gas heat exchanger is provided with a first input end, a first output end, a second input end and a second output end; an outlet flue gas pipeline of a bag-type dustcollector of the cement grinding system is communicated with the first input end; the first output end is communicated with a gas inlet end of the low-temperature catalyst SCR reactor; a gas outlet end of the low-temperature catalyst SCR reactor is communicated with the second input end; and the second output end is communicated with the variable-frequency fan. The low-temperature catalyst SCR reactor adopts a low-temperature catalyst and is further matched with the GGH flue gas heat exchanger for use, so that the denitration function is effectively realized and the operation cost of the device is reduced; the independent variable-frequency fan is arranged, so that the fluctuation of the amount of treated denitrified flue gas is effectively controlled in a variable-frequency form, and thestability of the whole system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment and environmental protection equipment, in particular to a flue gas denitrification treatment device of a cement grinding system. Background technique [0002] The tail gas of cement kiln is an important source of air pollution. In recent years, the state has paid special attention to the pollution control in the cement field. During the production process of the vertical mill of the cement grinding system, sulfur oxides, nitrogen oxides and particulate matter are produced, which are serious Harmful to our living environment, acid rain, smog and other problems occur frequently. In order to cope with the environmental impact brought by the production of cement grinding system, the national environmental protection department began to require the treatment of its tail gas to be put on the agenda, among which the treatment requirements are further stringent, and the requirements for denitr...

AI Technical Summary

Problems solved by technology

According to the ultra-low emission requirements of the guiding emission standards, the NOx of the flue gas directly discharged into the atmosphere exceeds the standard. At present, there are few relevant treatment programs at home and abroad.

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