Investigation of computational upscaling of adsorption of SO2 and CO2 in fixed bed columns
- 27 Downloads
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.
KeywordsFlue gas treatment Computational upscaling Fixed bed Waste conversion
Partial funding for this research was provided by a Clare Booth Luce Foundation Graduate Fellowship.
- Ergun, S.: Fluid flow through packed columns. Chem. Eng. Prog. 48, 89–94 (1952)Google Scholar
- Gregg, S.J., Sing, K.S.W.: Adsorption, Surface Area, and Porosity. Academic Press, London (1982)Google Scholar
- Isitan, S., Ceylan, S., Topcu, Y., Hintz, C., Tefft, J., Chellappa, T., Guo, J., Goldfarb, J.L.: Product quality optimization in an integrated biorefinery: conversion of pistachio nutshell biomass to biofuels and activated biochars via pyrolysis. Energy Conserv. Manag. 127, 576–588 (2016)CrossRefGoogle Scholar
- Miller, D.C., Syamlal, M., Mebane, D.S., Storlie, C., Bhattacharyya, D., Sahinidis, N.V., Agarwal, D., Tong, C., Zitney, S.E., Sarkar, A., Sun, X., Sundaresan, S., Ryan, E.M., Engel, D., Dale, C.: Carbon capture simulation initiative: a case study in multiscale modeling and new challenges. Annu. Rev. Chem. Biomol. Eng. 5, 301–323 (2014)CrossRefGoogle Scholar
- Ruthven, D.M.: Principles of Adsorption and Adsorption Processes. Wiley, New York (1984)Google Scholar
- Weller, H., Greenshields, C., de Rouvray, C.: OpenFOAM, https://openfoam.org/