Abstract: In order to decrease the power consumption of desulphurization system, in the Jiangxi Fengcheng Phase II Power Plant of Ganneng Corporation Limited, some measures, such as to blend the coal rationally, to stop the booster fan in low load condition, to decrease the number of the slurry pumps in operating, to adjust the pH value of the slurry timely, to raise the operation efficiency of the ball mill and others, were adopted to optimize the operation mode of the desulphurization system. Due to the optimization of the operation mode, the service power consumption rate had been lowered obviously, and favorable economic benefit was obtained.

Key words: desulphurization system, low load, booster fan, optimized operation, energy conservation