循环流化床锅炉冷态临界流化风量与运行风量的关系分析

Analysis of the Relationship of CFBB Minimum Fluidization Air Flow in Cold and Hot Positions

利用厄贡准则式和浙江大学提出的计算式计算了宽筛分颗粒的临界流化风速以及冷热态临界流化风速的比值，分析了冷态临界流化风量与热态运行时风量的关系，认为两者基本相当时才能保证热态运行时床料良好流化。

The minimum fluidization velocity umf of wide-grade coal and the ratio of umf in cold and hot positions were calculated using the Ergun and Zhejiang University's equations respectively. The rela- tionship of the umf in cold and hot positions was analyzed and from the analysis the conclusion that the cold and hot umf should be nearly the same to keep the CFB running properly can be drawn.