Abstract: The belt spraying system is effective tool to control the dust pollution of coal conveyor system in thermal power plant.Due to that the belt spraying system is auxiliary equipment, so persons often do not pay sufficient attention to it. Some times, the unit had been put into operation formally, and the belt spraying system can not operate properly yet.Various problems, which happened during design, construction and commissioning stages of the coal conveyor belt spraying dustfalling system in 2×330MW cogeneration project of Urumqi Thermal Power Plant of Huadian Xinjiang Power Generation Corporation Limited,were discussed.The design optimization scheme of coal conveyor belt spraying dustfalling system for newly constructed thermal power project was put forward.It was proved by the practice that this scheme can simplify the design,and the system can be put into operation more reliably and stably.

Key words: belt spraying system, optimization scheme, thermal power project