催化裂化汽油改质反应动力学模型研究

Kinetic model of FCC naphtha olefin reformulation

以催化裂化反应机理为基础,针对催化裂化汽油改质过程,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,该模型对原料和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质量分数的研究。

A six-lump kinetic model was derived on the basis of FCC reaction mechanism to represent the FCC naphtha olefin reformulation.Lumps were defined not only by their boiling range but also by their chemical compositions.Rate constants,frequent factors and activation energies were estimated based on the experimental data.The proposed model could not only predict successfully the yields,but also provide more information of the chemical compositions of naphtha.The model is useful for the study of how to reduce the olefin content of FCC naphtha.