Reaction performance of fluidized bed catalytic reactor of Group C+ particles--颗粒学报PARTICUOLOGY

Zhao, Z., Zhou, Y., Bao, X., Zhu, J., & Liu, H. (2021). Reaction performance of fluidized bed catalytic reactor of Group C+ particles. Particuology, 54, 5-16. https://doi.org/10.1016/j.partic.2020.11.002

Reaction performance of fluidized bed catalytic reactor of Group C⁺ particles

Zhiwei Zhao ^a, Yandaizi Zhou ^b, Xiaojun Bao ^a *, Jesse Zhu ^{a b *}, Haiyan Liu ^a

a State Key Laboratory of Heavy Oil Processing, Department of Chemical Engineering, China University of Petroleum, Beijing 102249, China
b Particle Technology Research Center, Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada

10.1016/j.partic.2020.11.002

Volume 54, February 2021, Pages 5-16

Received 24 May 2020, Revised 5 October 2020, Accepted 4 November 2020, Available online 24 November 2020, Version of Record 28 January 2021.

E-mail: baoxj@cup.edu.cn; jzhu@uwo.ca

Highlights

• Group C⁺ fluidized bed enhanced mass transfer between bubble and dense phases.

• Group C⁺ fluidized bed provided more effective surface area for gas–solid reaction.

• Group C⁺ fluidized bed achieved higher reaction conversion and yield.

• Group C⁺ fluidized bed had a better reaction performance.

Abstract

Group C particles are often regarded as non-fluidizable but have proven to effectively fluidize with nanoparticle addition, which results in small bubbles and a high gas holdup in the dense phase during the experiments. Group C⁺ particles provide an increased surface area for gas–solid contact and improve the reaction performance, especially for gas-phase catalytic reactions. On the basis of a previous study of the ozone decomposition reaction using Group C⁺ particles, a two-phase model was used to evaluate the reactor contact efficiency, and was used to compare the partial oxidation performance of the n-butane to maleic anhydride reaction in fluidized-bed catalytic reactors of Group C⁺and Group A particles. The reactor with Group C⁺ particles achieved a higher n-butane conversion and MAN yield compared with that using Group A particles, based on the identical catalyst quantity or on the same gas residence time. Therefore, the reactor with Group C⁺ particles can achieve the same reaction conversion and yield with fewer catalysts or a smaller reactor size, or both. Therefore, the fluidized bed catalytic reactor of Group C⁺ particles is expected to be of major significance in industrial processes, especially for gas-phase catalytic reactions.

Graphical abstract

Keywords

Group C⁺ particles; Fluidized bed catalytic reactor; Reactor performance; Nanoparticles; Modified two-phase model; Effective surface area

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