文献类型：期刊文献

中文题名：Coupling non-isothermal trickle-bed reactor with catalyst pellet models to understand the reaction and diffusion in gas oil hydrodesulfurization

作者：Xingqiang Zhao[1];Changfeng Yang[1];Mengke Lu[1];Yao Shi[1];Gang Qian[1];Xinggui Zhou[1];Xuezhi Duan[1]

机构：[1]State Key Laboratory of Chemical Engineering,East China University of Science and Technology,130 Meilong Road,Shanghai 200237,China

年份：2020

卷号：28

期号：4

起止页码：1095

中文期刊名：Chinese Journal of Chemical Engineering

外文期刊名：中国化学工程学报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；

基金：supported by the National Key R&D Program of China(2018YFB0604500);the National Natural Science Foundation of China(21922803 and 21776077);the Shanghai Natural Science Foundation(17ZR1407300 and 17ZR1407500);the Program for Professor of Special Appointment(Eastern Scholar)at Shanghai Institutions of Higher Learning;the Shanghai Rising-Star Program(17QA1401200);the Open Project of SKLOCE(SKL-Che-15C03);the 111 Project of the Ministry of Education of China(B08021)。

语种：英文

中文关键词：Hydrodesulfurization;Catalyst pellet;Trickle-bed reactor;Coupling model;Reaction-diffusion behavior

摘要：In this work,a trickle-bed reactor coupled with catalyst pellet model is employed to understand the effects of the temperature and catalyst pellet structures on the reaction-diffusion behaviors in gas oil hydrodesulfurization(HDS).The non-isothermal reactor model is determined to be reasonable due to non-negligible temperature variation caused by the reaction heat.The reaction rate along the reactor is mainly dominated by the temperature,and the sulfur concentration gradient in the catalyst pellet decreases gradually along the reactor,leading to the increased internal effectiveness factor.For the fixed catalyst bed volume,there exists a compromise between the catalyst reaction rate and effectiveness factor.Under commonly studied catalyst pellet size of 0.8-3 mm and porosity of 0.4-0.8,an optimization of the temperature and catalyst pellet structures is carried out,and the optimized outlet sulfur content decreases to 7.6 wppm better than the commercial level at 0.96 mm of the catalyst pellet size and 0.40 of the catalyst porosity.