With increase of bed height, air pressure and power consumption rise, expansion ratio of the bed decreases, but the density stability and critical fluidized velocity of the bed are hardly changed.
随着床层高度的增加，所需风压及功率增大，膨胀率有所降低，而床层密度的稳定性和起始流化气速几乎不变。
2
Pressurized fluidized bed combustion combined cycle(PFBC CC) power generation is a new clean coal technology.
增压流化床联合循环（PFBC-CC）发电技术是一种新型的洁净煤技术。
3
Milling system : cracker, muller, milling machine, conveyor, hoist , material house, fluidized bed furnace, helix mixing blade, ripe power house, static dust catcher and shaking motor.