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Catalysis in Industry

, Volume 11, Issue 1, pp 80–86 | Cite as

Mathematical Modeling of the Dehydrating Ethanol to Ethylene Process in a Multitubular Reactor on a Ring-Shaped Alumina Catalyst

  • E. V. OvchinnikovaEmail author
  • S. P. Banzaraktsaeva
  • E. A. Kalugina
  • V. A. Chumachenko
ENGINEERING PROBLEMS. OPERATION AND PRODUCTION

Abstract

The process of dehydrating ethanol to ethylene by varying geometrical dimensions of a ring-shaped alumina catalyst is studied using a mathematical 2D model of a multitubular reactor. The set of ring sizes determines equivalent grain size Req, on which catalyst’s effectiveness factor η depends in turn. A procedure is proposed for assigning grains with different geometric dimensions to four structural groups, depending on the technique used to synthesize samples with the same equivalent size Req. Based on this approach, a system of criteria is developed for selecting catalyst grains with the best characteristics for given conditions. The geometric sizes of grains and other parameters that ensure the highest ethylene yield at the lowest values of the pressure drop and the residence time are determined.

Keywords:

mathematical model multitubular reactor dehydrating ethanol to ethylene alumina catalyst ring catalyst’s effectiveness factor equivalent grain size pressure drop 

Notes

ACKNOWLEDGMENTS

The authors are grateful to Dr. V.Y. Kruglyakov (BIC) for experimental testing mechanical strength of alumina catalysts and valuable suggestions on their implementation and Engineer S.S. Pogodkina (BIC) for assistance in computation.

This work was conducted within the framework of the budget project АААА-А17-117041710076-7 for the Boreskov Institute of Catalysis.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • E. V. Ovchinnikova
    • 1
    Email author
  • S. P. Banzaraktsaeva
    • 1
  • E. A. Kalugina
    • 1
  • V. A. Chumachenko
    • 1
  1. 1.Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of SciencesNovosibirskRussia

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