Heat transfer in the circulating fluidized bed of a commercial catalyst cooler

This paper presents an investigation of heat transfer performances of a catalyst cooler in a residue fluid catalytic cracking unit (FCCU). More than 3000 sets of operating data are examined. A graph of hydrodynamic regimes is summarized and the operating region discussed. Thousands of sets of the fluidized bed side film heat transfer coefficient are obtained, and a revised correlation equation is given with fair accuracy.