摘要
采用固定床反应装置进行重整芳烃脱烯烃反应实验,结合外扩散传质过程与芳烃脱烯烃反应过程,建立了重整芳烃脱烯烃的反应动力学模型。利用反应实验数据和流体密度计算数据进行模型参数估值,确定了外扩散传质速率常数模型参数和烯烃反应速率常数,建立了较高模拟计算精度的脱烯烃反应动力学模型。模型预测结果表明,随着流体空塔流速提高,外扩散有效因子先增大然后趋于1,烯烃转化率呈先增大后趋于不变;当流体空塔流速超过某一数值时,已经消除外扩散阻力对脱烯烃反应的影响,而且反应温度越高,消除外扩散影响所需的流体空塔流速越大;在反应温度240℃下,消除外扩散阻力影响的流体空塔流速为15cm/h。
The reaction experiments for olefin removal from reforming aromatics over solid acid catalyst were carried out in a fix-bed reactor. The reaction kinetic model for olefin removal from aromatics was established based on external diffusion transfer process and chemical reaction process. The model parameters of external diffusion transfer rate and the rate constant of olefin reactions were determined through parameter estimation by using reaction experimental data and fluid density. The reaction kinetic model with higher calculation accuracy was developed. The model predictions indicated that the external diffusion efficiency factor increased to one and the olefin conversion first increased then kept unchanged with the increase of fluid empty tower velocity. If the reaction temperature was higher, the fluid empty tower velocity required for the elimination of external diffusion effect was higher. At the reaction temperature of 240℃, the fluid empty tower velocity required for the elimination of external diffusion effect was 15 cm/h.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2015年第3期726-731,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
重整芳烃
脱烯烃
固体酸催化剂
反应动力学
外扩散有效因子
reforming aromatics olefin removal
solid acid catalyst
reaction kinetics
externaldiffusion efficiency factor
作者简介
通讯联系人：任杰，男，教授，博士，从事石油加工工艺和多相催化研究；Tel：0571—88320208；E-mail：Renjie．R@263．net
