Abstract:Taking caliper bituminous coal combusted in the forced circulation boiler Model HG-1900/25.4-MPa as an example, the impact analyses of ventilation quantity on coal mill output and life, as well as the desiccant temperature on coal mill output and boiler coal combustion effects are performed. The results show that the appropriate selection of ventilation quantity and the reasonable determination of desiccant temperature and share ensure the coal mill to run at maximum output condition, the power consumption to be reduced effectively, and the service life and economy of coal pulverizing system to be improved. Furthermore, the unit economy, safety and stable operation can be also protected.

Keywords:medium speed coal mill, coal pulverizing system;coal mill output, desiccant temperature, ventilation quantity