Research On Flue Gas Denitrification Technology In 200MW Units

Pollutant NOX emission is an increasing threat to environment and human health, so solving the environment pollution problem of NO_X emission from power plant boiler has became an urgent problem. A systematic description is given of existing NO_X control technology and its technology and economic characteristics in this paper. On this basis, this text has made a series of research aiming at the nitrogen removal of boiler in Guohua Thermal Power Plant, Beijing. First, the NO_X emission is reduced to about 350mg/Nm~3 through Fuel Reburning and Air Staged Combustion of Low-NO_x Burners, and then by the technology of SNCR, the NO_X emission is reduced to about 200mg/Nm~3, next it proposed the innovation scheme of SCR DeNO_X technology, analyzing the influence regulation of such factors as SCR catalyst, installation position, investment operating cost and thermal calculation of boiler on NO_X emission. The results show that the innovation scheme can reach the standard of NO_X emission.