SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 53 ›› Issue (1): 63-72.DOI: 10.1016/j.cjche.2022.02.012

• Full Length Article • 上一篇    下一篇

Investigation on catalytic distillation for ethyl acetate production with different catalytic packing structures

Zhiwei Wang, Yu Zhang, Zhi Zhang, Daowei Zhou, Zhikai Cao, Yong Sha   

  1. Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
  • 收稿日期:2021-12-09 修回日期:2022-02-12 出版日期:2023-01-28 发布日期:2023-04-08
  • 通讯作者: Yong Sha,E-mail:ysha@xmu.edu.cn
  • 基金资助:
    The authors acknowledge financial support provided by National Natural Science Foundation of China (21978243).

Investigation on catalytic distillation for ethyl acetate production with different catalytic packing structures

Zhiwei Wang, Yu Zhang, Zhi Zhang, Daowei Zhou, Zhikai Cao, Yong Sha   

  1. Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
  • Received:2021-12-09 Revised:2022-02-12 Online:2023-01-28 Published:2023-04-08
  • Contact: Yong Sha,E-mail:ysha@xmu.edu.cn
  • Supported by:
    The authors acknowledge financial support provided by National Natural Science Foundation of China (21978243).

摘要: The catalytic packing is the core component of the catalytic distillation, and how the catalyst exists in the packing has significant influence on the process. To investigate the effect of catalyst packings on the catalytic distillation process, the classical ethyl acetate reactive distillation system was utilized, and a supported catalytic packing (SCP) was prepared in comparison with the conventional tea-bag catalytic packing (TBP). Laboratory scale experiments showed that the ethyl acetate conversion of the SCP was superior to the TBP at a low catalyst loading. The effects of reaction kinetics, mass transfer performance and actual catalytic efficiency of the packings on this process were regarded as reasons and studied by combining the experiments and numerical simulation. Results suggested that the relatively immediate “in-situ separation” caused by the rapid reaction kinetics and better mass transfer performance of SCP may be a main reason for the difference of the conversion.

关键词: Catalytic packing, Ethyl acetate, Catalytic distillation, Mass transfer, Esterification, Reaction kinetics

Abstract: The catalytic packing is the core component of the catalytic distillation, and how the catalyst exists in the packing has significant influence on the process. To investigate the effect of catalyst packings on the catalytic distillation process, the classical ethyl acetate reactive distillation system was utilized, and a supported catalytic packing (SCP) was prepared in comparison with the conventional tea-bag catalytic packing (TBP). Laboratory scale experiments showed that the ethyl acetate conversion of the SCP was superior to the TBP at a low catalyst loading. The effects of reaction kinetics, mass transfer performance and actual catalytic efficiency of the packings on this process were regarded as reasons and studied by combining the experiments and numerical simulation. Results suggested that the relatively immediate “in-situ separation” caused by the rapid reaction kinetics and better mass transfer performance of SCP may be a main reason for the difference of the conversion.

Key words: Catalytic packing, Ethyl acetate, Catalytic distillation, Mass transfer, Esterification, Reaction kinetics