Different reactor configurations for enhancement of CO 2 methanation.

Autor: Harkou E; Department of Chemical Engineering, Cyprus University of Technology, 57 Corner of Athinon and Anexartisias, Limassol, 3036, Cyprus., Hafeez S; School of Engineering and Materials Science, Queen Mary University of London, London, E14NS, UK., Adamou P; Department of Chemical Engineering, Cyprus University of Technology, 57 Corner of Athinon and Anexartisias, Limassol, 3036, Cyprus., Zhang Z; WilliamG. Lowrie Department of Chemical and Biomolecular Engineerig, The Ohio State University Columbus, OH, 43210, USA., Tsiotsias AI; Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100, Greece., Charisiou ND; Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100, Greece., Goula MA; Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100, Greece., Al-Salem SM; Environmental & Life Sciences Research Centre, Kuwait Institute for Scientific Research, Kuwait., Manos G; Department of Chemical Engineering, University College London, London, WCIE7JE, UK., Constantinou A; Department of Chemical Engineering, Cyprus University of Technology, 57 Corner of Athinon and Anexartisias, Limassol, 3036, Cyprus. Electronic address: a.konstantinou@cut.ac.cy.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2023 Nov 01; Vol. 236 (Pt 1), pp. 116760. Date of Electronic Publication: 2023 Jul 27.
DOI: 10.1016/j.envres.2023.116760
Abstrakt: Greenhouse gas emissions are a massive concern for scientists to minimize the effect of global warming in the environment. In this study, packed bed, coated wall, and membrane reactors were investigated using three novel nickel catalysts for the methanation of CO 2 . CFD modelling methodologies were implemented to develop 2D models. The validity of the model was investigated in a previous study where experimental and simulated results in a packed bed reactor were in a good agreement. It was observed that the coated wall reactor had poorer performance compared to the packed bed, approximately 30% difference between the results, as the residence time of the former was lower. In addition, two membrane configurations were proposed, including a membrane packed bed and membrane coated wall reactor. Additional studies were performed in the coated wall reactor revealing that lower flow rates lead to higher conversion values. As for the bed thickness the optimum layer was found to be 1 mm. In both membrane reactor configurations, the effect of the thickness of M 1 membrane, which indicates the membrane for the removal of H 2 O, didn't show difference while the reduction of the thickness of M 2 membrane, which indicates the membrane for the removal of CO 2 , H 2 and H 2 O, showed better results in terms of conversion.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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