<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The use of hollow catalytic support improves the utilization of the catalytic material because of the absence of the pellet core, and moreover ensures low reactor pressure drop owing to enhanced bed voidage. In this study, the expressions for the efficient computation of the effectiveness factor are derived for a ring-shaped catalyst pellet undergoing first-order irreversible reaction. The methodology consists of using solutions of one-dimensional problems to remove non-homogeneous boundary conditions. The expressions obtained exhibit significantly faster convergence behavior than those reported in literature. The shape parameters, namely, the height-to-diameter ratio and the inner-to-outer radii ratio, significantly affect the catalyst utilization, such that several-fold improvement in the effectiveness factor is achievable.</p></abstract>

The use of hollow catalytic support improves the utilization of the catalytic material because of the absence of the pellet core, and moreover ensures low reactor pressure drop owing to enhanced bed voidage. In this study, the expressions for the efficient computation of the effectiveness factor are derived for a ring-shaped catalyst pellet undergoing first-order irreversible reaction. The methodology consists of using solutions of one-dimensional problems to remove non-homogeneous boundary conditions. The expressions obtained exhibit significantly faster convergence behavior than those reported in literature. The shape parameters, namely, the height-to-diameter ratio and the inner-to-outer radii ratio, significantly affect the catalyst utilization, such that several-fold improvement in the effectiveness factor is achievable.

Effectiveness factor of two-dimensional ring-shaped catalyst pellets

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Effectiveness factor of two-dimensional ring-shaped catalyst pellets"}

The use of hollow catalytic support improves the utilization of the catalytic material because of the absence of the pellet core, and moreover ensures low...

Effectiveness factor of two-dimensional ring-shaped catalyst pellets

Published Online: Oct 10, 2017

Page range: 99 - 105

DOI: https://doi.org/10.1515/pjct-2017-0055

Keywords
hollow catalyst pellet, effectiveness factor, Thiele modulus, convergence behavior, analytical solution

© 2017 Mohammad Asif et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Effectiveness factor of two-dimensional ring-shaped catalyst pellets

Published Online: Oct 10, 2017

Page range: 99 - 105

DOI: https://doi.org/10.1515/pjct-2017-0055

Keywordshollow catalyst pellet, effectiveness factor, Thiele modulus, convergence behavior, analytical solution

© 2017 Mohammad Asif et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
hollow catalyst pellet, effectiveness factor, Thiele modulus, convergence behavior, analytical solution