摘要
Lateral solid mixing was investigated experimentally in the dense zone of a 900mm×100mm×5.2m rectangular circulating fluidized bed riser.Using heated tracer injection,the lateral solid dispersion was determined by measuring the temperature response at different lateral positions. Furthermore, a one-dimensional dispersion model,which describes the solid mixing in the dense zone,is presented.The experimental results were used to determine the lateral particle dispersion coefficient under various operating conditions. A correlation of dispersion coefficient with bed height, gas velocity,and particle size is also proposed.
Lateral solid mixing was investigated experimentally in the densezone of a 900 mm×100mm×5.2m rectangular circulating fluidized bedriser. Using heated tracer injection, the lateral solid dispersionwas determined by measuring the temperature response at differentlateral positions. Furthermore, a one-dimensional dispersion model,which describes the solid mixing in the dense zone, is presented. Theexperimental results were used to determine the lateral particledispersion coefficient under various operating conditions. Acorrelation of dispersion coefficient with bed height, gas velocity,and particle size is also proposed.
关键词
循环化床
稠密区
横向固体混合
lateral dispersion coefficient
heated tracer particle
dense zone
circulating fluidized bed
