循环床中气固两相局部传热传质规律的研究  

LOCAL HEAT AND MASS TRANSFER BETWEEN GAS AND SOLID IN CFB

作　　者：陆丰[1] 施明恒[1] 马武忠 

机构地区：[1]东南大学动力系,江苏省节能中心

出　　处：《工程热物理学报》1994年第4期420-424,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金

摘　　要：本文对含湿颗粒在循环床中干燥过程的传热传质规律进行了实验研究。本文发展的一种利用双热电偶参考标定法，获得了气、固两相沿床高的局部温度。对气体表观流速，固体循环率，颗粒初始含湿量对传热传质的影响进行了分析和讨论。所获得的循环床中传热传质系数的实验关联式，可供干燥颗粒、造粒、粒面包裹等工业设计参考使用。An experimental investigation on the local heat and mass transfer for drying the moist particles in the circulating fluidized bed (CFB) has been performed. The two-thermocouple contrast method was developed to measure the local gas and solid temperatrues along the height of the bed. The effect of air superficial velocity, solid rate and initial moisture content on the heat and mass transfer were discussed. The experimental correlations of the local heat and mass transfer were obtained.

关 键 词：传热传质 气固两相流 循环床 

分 类 号：TK124[动力工程及工程热物理—工程热物理]