Numerical Simulation on Gas-Solid Two-Phase Turbulent Flow in FCC Riser Reactors (Ⅰ) Turbulent Gas-Solid Flow-Reaction Model
Cao Jinsen Xu Chunming and Yang Guanghua State Key Laboratory of Heavy Oil Processing, Petroleum University, Beijing 102200, China Guo Yinchengand Lin Wenyi Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
Gas-solid two-phase turbulent flows, mass transfer, heat transfer and catalytic cracking reactions are known to exert interrelated influences in commercial fluid catalytic cracking(FCC) riser reactors. In the present paper, a three-dimensional turbulent gas-solid two-phase flow-reaction model for FCC riser reactors was developed. The model took into account the gas-solid two-phase turbulent flows, inter-phase heat transfer, mass transfer, catalytic cracking reactions and their interrelated influence. The k-V-kp two-phase turbulence model was employed and modified for the two-phase turbulent flow patterns with relatively high particle concentration. Boundary conditions for the flow-reaction model were given. Related numerical algorithm was formed and a numerical code was drawn up. Numerical modeling for commercial FCC riser reactors could be carried out with the presented model.
【CateGory Index】： TQ018