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

Xingqiang Zhao; Changfeng Yang; Mengke Lu; Yao Shi; Gang Qian; Xinggui Zhou; Xuezhi Duan

doi:10.1016/j.cjche.2020.02.013

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

Catalysis, Kinetics and Reaction Engineering | Updated：2026-01-06

- Coupling non-isothermal trickle-bed reactor with catalyst pellet models to understand the reaction and diffusion in gas oil hydrodesulfurization
- Coupling non-isothermal trickle-bed reactor with catalyst pellet models to understand the reaction and diffusion in gas oil hydrodesulfurization
- 中国化学工程学报（英文版） 2020年28卷第4期页码：1095-1106
- Affiliations：
  
  State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road,Shanghai,China,200237
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.02.013
  中图分类号：
- 纸质出版：2020
- Accepted：
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Xingqiang Zhao, Changfeng Yang, Mengke Lu, 等. Coupling non-isothermal trickle-bed reactor with catalyst pellet models to understand the reaction and diffusion in gas oil hydrodesulfurization[J]. 中国化学工程学报（英文版）, 2020,28(4):1095-1106.

Xingqiang Zhao, Changfeng Yang, Mengke Lu, Yao Shi, Gang Qian, Xinggui Zhou, Xuezhi Duan. Coupling non-isothermal trickle-bed reactor with catalyst pellet models to understand the reaction and diffusion in gas oil hydrodesulfurization[J]. Chinese Journal of Chemical Engineering, 2020, 28(4): 1095-1106.
Xingqiang Zhao, Changfeng Yang, Mengke Lu, 等. Coupling non-isothermal trickle-bed reactor with catalyst pellet models to understand the reaction and diffusion in gas oil hydrodesulfurization[J]. 中国化学工程学报（英文版）, 2020,28(4):1095-1106. DOI： 10.1016/j.cjche.2020.02.013.

Xingqiang Zhao, Changfeng Yang, Mengke Lu, Yao Shi, Gang Qian, Xinggui Zhou, Xuezhi Duan. Coupling non-isothermal trickle-bed reactor with catalyst pellet models to understand the reaction and diffusion in gas oil hydrodesulfurization[J]. Chinese Journal of Chemical Engineering, 2020, 28(4): 1095-1106. DOI： 10.1016/j.cjche.2020.02.013.

摘要

Abstract

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.

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