Abstract: According to the operation situation of 600MW unit FGD system of Huadian International Zouxian Power Plant, the optimized energysaving mode with reduced electricity consumption, lime stone powder consumption and water consumption was analyzed. Based on optimal regulation and management of operation indicators competition, favorable effects were obtained.

Key words: flue gas desulphurization (FGD) system, energy-saving and emission reducing, optimization of operation mode, operation indicators management