催化裂化生焦反应集总动力学模型的研究

催化裂化生焦反应集总动力学模型的研究任杰（抚顺石油学院石油化工系，抚顺１１３００１）关键词催化裂化，生焦，集总动力学，动力学模型在催化裂化反应过程中，催化剂因结焦而迅速失活．催化剂结焦量对催化剂再生和装置的热平衡影响很大，因此建立生焦动力学模型对指导...

INVESTIGATION OF THE LUMPED KINETIC MODEL OF COKING REACTION FOR CATALYTIC CRACKING

The purpose of this paper is to develop a coking kinetic model consisting of seven lumped species for fluid catalytic cracking (FCC). Firstly, the physical model of coking reaction was determined. Furthermore, the coking reactions of light fuel oils and heavy fuel oils with quite different compositions on commercial equilibrium zeolite catalysts were carried out in a fixed fluidized bed reactor. Based on experiment data, the parameters of this coking model were determined by use of a parameter estimation method in two steps from light fuel oil to heavy fuel oil. This work points out that this model can simulate the experimental coke yield well, predict the coke yield over a wide range of reaction conditions and fit well with the feature of FCC coking reaction.