中文摘要：

在内径为53 mm,高800 mm的流化床冷模装置中安装两根垂直管束模拟透氢钯膜组件,研究膜流化床制氢装置的流动特性。以镍/氧化铝催化剂为实验颗粒,空气为流化介质,在0～0.14 m·s-1气速范围内考察了膜管对压力脉动、床层轴向密度分布等因素的影响。结果表明,流化床中加入膜管内构件后床层的压力脉动降低,床层密度增加,说明膜管内构件具有破碎和更新气泡、抑制气泡长大、提高气固两相传质效率的作用。以上的研究结果为工业流化床反应器的优化设计提供基础数据。

英文摘要：

As the internals,two vertical tube bundles were inserted into a cold model of fluidized bed with inner diameter of 53 mm and height of 800 mm to simulate the fluidized bed reactor with palladium membrane internals,and the fluidized characteristics in the fluidized bed membrane reactor used for the hydrogen production were investigated.The effects of the inserted internals on the pressure fluctuation and axial particle density profile of the fluidized bed were studied under the superficial gas velocity range of 0～0.14 m×s-1.The results show that the insertion of the vertical tube bundles increases the pressure fluctuation and the particle density of the bed,which indicates that the inserted internals could improve the quality of fluidization by splitting,renewing the bubbles and inhibiting the growth of the bubbles during their moving upward in the fluidized bed,which will enhance the mass transfer effect between the gas and the solid particles.The present experimental findings provide fundamental data for optimization design of the industrial membrane fluidized bed reactor.