催化裂化汽油改质降烯烃并多产丙烯的反应动力学模型研究

Kinetic model of FCC naphtha reformulation for reducing olefin and enhancing propene production

以催化裂化反应机理为基础,针对催化裂化汽油改质降烯烃并多产丙烯的过程,把催化裂化汽油和产品按馏程和化学组成集总,建立了催化裂化汽油改质降烯烃并多产丙烯的六集总反应动力学模型。通过对实验数据的回归,求取了反应动力学速率常数,反应活化能和反应的指前因子。结果表明,该模型对反应条件变化有较好的适应性,能较好预测不同条件下的产率分布和汽油组成,有助于降低汽油烯烃含量和多产丙烯的研究。

A six-lump kinetic model was derived on the basis of FCC reaction mechanism to represent the FCC naphtha reformulation for reducing olefin and enhancing propene production. Lumps were defined not only by their boiling range but also by their chemical compositions. Rate constants, frequent factors and activation energies parameters were estimated according to the experimental data. The proposed model could not only predict the yields successfully, but also provide more information about the chemical compositions of naphtha; which is useful for any attempts to reduce the olefin content in FCC naphtha and to enhance the propene production.