A Kinetics Lumped Model for VGO Catalytic Cracking in a Fluidized Bed Reactor

CATEGORY: FCC - FLUID CATALYTIC CRACKING
Petroleum Science and Technology, Volume 30, Issue 9, 2012, pages 945-957
A Kinetics Lumped Model for VGO Catalytic Cracking in a Fluidized Bed Reactor
F. Shayegh a, A. Farshia & A. Dehgan a
a Research Institute of Petroleum Industry, Tehran, Iran
Abstract
In the fluid catalytic cracking reactor heavy gas oil is cracked into more valuable lighter hydrocarbon products. The reactor input is a mixture of hydrocarbons that makes the reaction kinetics very complicated due to the involved reactions.
Authors propose a four-lump model to describe the kinetics of vacuum gas–oil (VGO) cracking in the FCC process. The model is different from other models in that the deposition rate of coke on catalyst can be predicted from gas–oil conversion and isolated from the C1-C4 gas yield.
Using the model, authors also conclude that the C1-C4 gas yield increases with increasing reactor temperature, whereas the production of gasoline and coke decreases.
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