On the contrary , beds of large uniformly sized solids often fluidize poorly with bumping , spouting and slugging.

相反，均匀大颗粒床层常常由于碰撞、喷射和腾涌而流化不好。

By introducing the concept of fluidization factor, the required velocity at nozzle outlet starting to fluidize particulate material under different structural factor was obtained.

通过引入流化程度因子概念，采用正交试验得到了不同结构参数下物料流化所需的喷嘴出口气流速度。

The height computation model of fluidize-bed showed that the bed height is mainly influenced by catalyst filling amount, linear speed of reaction gas and particle size of catalyst.

流化床高度计算模型表明，床层高度主要受催化剂装填量、反应气体线速和催化剂粒度的影响。