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Investigation of computational upscaling of adsorption of SO2 and CO2 in fixed bed columns

Authors
  • Dupre, Kathleen R.1
  • Vyas, Ami1
  • Goldfarb, Jillian L.1, 2
  • Ryan, Emily M.1
  • 1 Boston University, Department of Mechanical Engineering, 110 Cummington Mall, Boston, MA, 02215, USA , Boston (United States)
  • 2 Cornell University, Department of Biological and Environmental Engineering, 226 Riley-Robb Hall, Ithaca, NY, 14853, USA , Ithaca (United States)
Type
Published Article
Journal
Adsorption
Publisher
Springer US
Publication Date
Mar 09, 2019
Volume
25
Issue
4
Pages
773–782
Identifiers
DOI: 10.1007/s10450-019-00050-4
Source
Springer Nature
Keywords
License
Yellow

Abstract

Fixed bed adsorption is an economical method of removing harmful gases, such as SO2 and CO2, from industrial flue gas. It is possible to reduce the cost and environmental impact of fixed bed adsorption by repurposing waste materials to be used as adsorbents, such as semi-coke derived from oil shale, a possible alternative to fossil fuels. Fixed bed adsorption systems are difficult and time consuming to characterize experimentally, especially on large scales. Computational fluid dynamics (CFD) can expand researchers understaning of how these systems are affected by material selection and operating conditions. This study uses CFD to characterize fixed bed adsorption of SO2 and CO2. The research primarily focuses on SO2 adsorption on semi-coke, with an extension to CO2 adsorption on commercial carbon. The CFD modeling was able to describe the amount of the pollutants each material was able to adsorb over time based on a variety of inputs on a larger scale than experimental research. The model was further able to give more detailed comparisons of materials and operating conditions than the experiments, particularly the SO2 and semi-coke system.

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