Study of mass transfer correlations for rotating packed bed columns in the context of solvent-based carbon capture

Oko, Eni; Wang, Meihong; Ramshaw, Colin

Abstract

© 2019 Elsevier Ltd The application of rotating packed beds (RPBs) in solvent-based carbon capture processes, will greatly reduce the physical footprint, capital and operating cost of the process. However, in designing RPBs, correlations for predicting mass transfer parameters are generally limited in literature and their prediction accuracies have not been demonstrated independently. In this paper, an RPB absorber model was developed in gPROMS ModelBuilder® and used to test and compare different correlations for predicting the effective interfacial area, liquid and gas film mass transfer coefficients. Our results showed that the modified packed column mass transfer correlations where the “g” term (i.e. gravitational acceleration) is replaced with “rw2” (i.e. centrifugal acceleration) commonly used in literature for RPBs generally give poor predictions compared to using correlations developed specifically for RPBs. Also, the Tung and Mah correlation has better predictive accuracy for the liquid film mass transfer coefficient in RPBs than more complex correlations. Finally, a set of new data for the gas film mass transfer coefficient for RPBs were also derived from overall volumetric mass transfer coefficient (KGa) experimental data from literature. This is the first report of gas film mass transfer data for RPBs. The results in this paper will guide researchers in selecting suitable correlations for predicting mass transfer parameters in RPBs.

Citation

Oko, E., Wang, M., & Ramshaw, C. (2019). Study of mass transfer correlations for rotating packed bed columns in the context of solvent-based carbon capture. International journal of greenhouse gas control, 91, Article 102831. https://doi.org/10.1016/j.ijggc.2019.102831

• Journal Article Type: Article
• Acceptance Date: Sep 9, 2019
• Online Publication Date: Oct 7, 2019
• Publication Date: Dec 1, 2019
• Deposit Date: Jan 2, 2020
• Publicly Available Date: Oct 8, 2020
• Journal: International Journal of Greenhouse Gas Control
• Print ISSN: 1750-5836
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 91
• Article Number: 102831
• DOI: https://doi.org/10.1016/j.ijggc.2019.102831
• Keywords: Solvent-based CO2 capture; Rotating packed bed; Effective interfacial area; Liquid film mass transfer coefficient; Gas film mass transfer coefficient; General Energy; Industrial and Manufacturing Engineering; Pollution; Management, Monitoring, Policy and
• Public URL: https://hull-repository.worktribe.com/output/3320407
• Related Public URLs: http://eprints.whiterose.ac.uk/154476/
• Additional Information: Copyright: © 2019 Elsevier Ltd. All rights reserved.
• Contract Date: Jan 8, 2020