화학공학소재연구정보센터
Chemical Engineering Research & Design, Vol.119, 188-197, 2017
Kinetic study of catalytic cracking on the effect of reaction parameters in short-contact cyclone reactors
The paper presented the research and the results obtained by the author concerning the kinetic modeling of the short-contact cyclone reactor of the catalytic cracking unit. It was an effort to model the phenomenon numerically using Euler-Euler two-phase model and 6-lump kinetic model. Geometry, boundary conditions and dimensions of industrial short contact cyclone reactor for catalytic cracking unit were conferred for 3D simulation using commercial CFD code FLUENT 6.3. The simulated results calculated by the established model in this paper made a reasonable agreement with the experimental findings. The simulated results indicate that the gradient distribution field in the short-contact cyclone reactor is beneficial to increase the contact time between crude oil gas and catalysts, and the short-contact cyclone reactor is also capable of achieving the rapid separation between gas products and catalysts. Simulations were also carried out to determine the effects of operating parameters on product yield. The operating parameters include reaction temperature, catalyst to oil ratio and reaction time, which are helpful for optimizing the yield of desired products. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.