Study of Unequal Speed Leveling Of Pulverized Coal Piping in Cold State

Abstract

Thee equality of flow of coal powder and wind in each pulverized coal piping makes great differences on the heat flux uniformity in combustion chamber. Thus, a common way to ensure the equality is to change the opening degree of the adjusting holes on the piping to get equivalent wind flow in cold state. However, the operating condition of the piping is in hot state with coal powder, which changes the resistance characterizes in each piping. Present paper casts light on the calculation method of unequal speed leveling in cold state, in order to get equivalent wind speed in hot state with powder.