To make the suspended straws burn completely in the riser of circulating fluidized beds,lean phase zone should be high and suitable enough in straw burned circulating fluidized bed boilers.

• 对于秸杆燃烧循环流化床锅炉,需要有足够高的悬浮段并且悬浮段有一定的颗粒数量浓度以保证易悬浮的秸杆能够在提升管内充分燃烧。