催化裂化汽油萃取-光化学脱硫的动力学模型

Kinetic Model of Desulfurization of Fluid Catalytic Cracking Gasoline by Extraction and Photochemistry

摘要: 以在正辛烷中添加不同量和不同种类的硫化物为模拟体系，介绍了萃取一光化学脱除催化裂化（FCC）汽油中硫化物工艺，探究了该工艺的脱硫机理，并建立了脱硫动力学方程，其动力学方程为（-rA）=dcA/dt=0.4352cA-462.28, Ea=16.9kJ/mol, k0=1.19。并通过3种FCC汽油的萃取-光化学脱硫的实验数据对该动力学模型进行验证，结果表明：该动力学方程适用于1#FCC汽油和3#FCC汽油；对于2#FCC汽油，由于其烯烃含量比较高，对实验结果有一定的影响，因此，计算结果与实验数据存在一定的偏差。

Abstract: In the model system,the mechanism of desulfurization of fluid catalytic cracking gasoline by extraction and photochemistry was investigated, and kinetic equation is founded.The kinetics equation is: (-r_A)=-dc_Adt=0.435 2 c_A-462.28,Ea=16.9 kJ/mol,k_0=1.19.At the same time,the kinetic(equation) is validated by three types of FCC gasoline.The results indicate that the kinetic equation is adapted to the actual 1~# and 2~# FCC gasoline system.In the 2~# FCC gasoline,there is error between experiment and computation because of alkenes.