A structured packed-bed reactor designed for exothermic hydrogenation of acetone--颗粒学报PARTICUOLOGY

Duan, Y., Xu, M., Zhou, X., & Huai, X. (2014). A structured packed-bed reactor designed for exothermic hydrogenation of acetone. Particuology, 17, 125–130. https://doi.org/10.1016/j.partic.2013.07.010

A structured packed-bed reactor designed for exothermic hydrogenation of acetone

Yanjun Duan ^{a b}, Min Xu ^a, Xiaoming Zhou ^a, Xiulan Huai ^a *

a Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
b University of Chinese Academy of Sciences, Beijing 100049, China

10.1016/j.partic.2013.07.010

Volume 17, December 2014, Pages 125-130

Received 27 May 2013, Revised 17 July 2013, Accepted 20 July 2013, Available online 1 November 2013.

E-mail: hxl@iet.cn

Highlights

• Structured packed-bed reactor was designed for exothermic hydrogenation of acetone.

• Structured and random packed-bed reactors were simulated and compared using CFD.

• The reactor performed better in terms of pressure drop and heat transfer coefficient.

Abstract

Fixed-bed reactors randomly packed with catalysts have many disadvantages that may adversely affect the desired chemical reaction. The increasingly used monolithic reactor, in contrast, has many operational advantages; however, for a kinetically-controlled reaction, it does not contain sufficient catalyst to sustain the reaction. To address the problems associated with both randomly packed-bed reactor and the monolithic reactor, a structured packed-bed reactor was proposed and mathematical models were built for randomly packed-bed reactor and structured packed-bed reactor. Their respective performances were compared when applied to the exothermic reaction of the isopropanol–acetone–hydrogen chemical heat pump system. The results showed that the structured packed-bed reactor performed better in terms of pressure drop and heat transfer capacity, and had a lower radial temperature gradient, indicating that this reactor had a higher effective heat conductivity. Isopropanol on the catalyst particle surfaces was more concentrated near the tube wall because a wall effect existed in the boundary layer around the particle-wall contact points.

Graphical abstract

Keywords

Chemical heat pump; Structured packed-bed reactor; Acetone hydrogenation; CFD simulation

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