【作者】 刘建华； 刘明言； 胡宗定；

【Author】 Liu Jianhua,Liu Mingyan~*,Hu Zongding (School of Chemical Engineering and Technology,Tianjin University,Weijin Road No.92,Nankai District,Tianjin 300072 China)

【机构】 天津大学化工学院；

【摘要】 应用基于互补金属氧化物半导体(Complementary Metal OxideSemiconductor,CMOS)传感器的高速图像测试处理技术,实验研究了低固含率条件下大孔吸附树脂固体颗粒气-液-固三相循环流化床的流体力学行为,分析了操作条件、液相物性、颗粒性质等对床内的固体颗粒循环速度、平均相含率、气泡运动特性等的影响规律。稀颗粒系统的流动特性规律与正常固含率条件下的三相流动特性相似。更多还原

【Abstract】 Hydrodynamics in a gas-liquid-solid circulating fluidized bed at low solid holdups of resin particles was experimentally investigated with a high-speed image measurement and treatment technique of complementary metal oxide semiconductor.Influences of superficial liquid velocity,particle diameter and density,liquid surface tension and viscosity on the phase holdups, average gas bubble diameter,circulating rate of solid particles both in the riser and in the downer were investigated besides the bubble motions.Must results agree with those from the ordinary gas-liquid-solid circulating fluidized bed.更多还原