Qingzhou benefits of circulating fluidized bed boilerthermoelectric limited liability company existing 4 sets of 75t/h and 1 130t/h,the original supporting the construction of desulphurization system, due to therequirements of environmental protection to improve the ultra low emissions,especially new ammonia desulfurization device, in accordance with the 4 75t/hfurnace two furnace a tower, 130t/h furnace, a furnace a tower configuration,the top of the tower directly from design, to ensure the flue gas outletemission index is SO2 = 35mg/Nm3, solid particles less than 5mg/Nm3.