大颗粒气固流化床的流化特性

Characterization of gas-solid fluidization with large-particle

通过冷态试验,对利用流化床煅烧水泥新技术中所涉及到的大颗粒气固流化床的相关特性进行了研究。研究结果表明:大颗粒气固流化床平稳地运行在鼓泡床阶段,但较易发生节涌现象,适合浅床操作,且操作流化数较低;对流化床压降脉动的分析可知,采用具有较宽粒度分布的大颗粒物料,有利于改善流化床的流化质量。

By a series of cold-model test, characterization of gas-solid fluidization with large-particle is researched, because the kind of fluidization may be used to calcinations process in producing cement. It has shown that gas-solid fluidized bed with large-particle is stable in bubbling regime and liable to slugging fluidization, so it had better be operated in shallow fluidized bed and low operating fluidizing number. It has known by analysis of pressure drop fluctuation that quality of fluidization can be improved with wider size distribution particle.