摘要
根据石脑油催化裂解的反应体系和集总理论,建立6集总动力学模型,采用Levenberg-Marquardt算法求解ZSM-5分子筛催化剂作用下的石脑油催化裂解动力学参数。结果表明,丙烯收率大大高于乙烯收率,丙烯与乙烯的质量比为1.0～2.0,明显高于传统的石脑油水蒸气裂解工艺,各集总的反应活化能均大于100 kJ/mol。通过对模型进行检验,发现模型计算值与实验值之间的误差均小于15%,表明该动力学模型能较好地预测石脑油催化裂解制低碳烯烃反应。
On the basis of the reaction system of naphtha catalytic pyrolysis and lumping theory, a six-lumped kinetic model was proposed. The kinetic parameters of kinetic model were obtained by the nonlinear least square theory with MATLAB. The results showed that the yield of propylene was obviously more than that of ethylene. The mass ratio of propylene to ethylene was 1. 0-2. 0, obviously was higher than that of traditional processes. The apparent activation energies of lumped reactions were more than 100 kJ/mol. The model was verified and it was found that the calculated values were in good agreement with the experimental values and the error bewteen the calculated values and the experimental values was less 15%, which indicated that the model could predict the reaction of naphtha catalytic pyrolysis for light olefins well.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
2010年第4期289-295,共7页
Chemical Reaction Engineering and Technology
基金
国家自然科学基金项目(20736011)
国家科技支撑计划项目(2008BAF33B05)
