Abstract:

Abstract:After the experimental study of to increase pulverizor outlet powder temperature on a power plant’s 300MW coal fired unit.This paper analyzed the effect of increasing pulverizer outlet powder temperature to boiler combustion,unit economy and safety.The experiment result indicated that to increase the powder temperature from 82℃ to 90℃,the operating parameter was not changed significantly, but the exhaust temperature was lower by four degrees celsius,coal cost lower by 0.89g/(kW·h).Which is remarkable on economic benefits.To increase pulverizer outlet powder temperature is low cost but would create extra economic benefits and saving energy.

Key words: Keywords:coal fired unit;outlet powder temperature, system margin;exhaust gas temperature, energy saving