CFD investigation of biogas reformate using membrane-assisted water gas shift reaction: Parametric analyses.
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| Title: | CFD investigation of biogas reformate using membrane-assisted water gas shift reaction: Parametric analyses. |
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| Authors: | Nnabuo, Nnaemeka1 (AUTHOR), Salama, Amgad1 (AUTHOR), Ibrahim, Hussameldin1 (AUTHOR) hussameldin.ibrahim@uregina.ca |
| Source: | Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers Part A. Oct2020, Vol. 162, p125-136. 12p. |
| Subjects: | Water gas shift reactions, Fixed bed reactors, Membrane reactors, Computational fluid dynamics, Water-gas, Heat transfer coefficient, Water use |
| Abstract: | • Water gas shift of untreated biogas reformate gas in fixed bed and membrane reactors. • CFD results are in agreement with experimental findings with an AAD of less than 10%. • Steam to carbon ratio of 3.4 boosted CO conversion and reduced reactor temperature. • Membrane reactor enabled equilibrium conversion at 2.95 gcat.h/mol CO weight-time. • Equilibrium conversion attained at lower weight-time and high steam to carbon ratio. A detailed computational fluid dynamics (CFD) model has been developed in this study for the water gas shift of untreated biogas reformate in both fixed bed and membrane reactors to gain insights into the interaction of 3Ni5Cu/Ce 0.5 Zr 0.33 Ca 0.17 catalyst with fluid transport phenomena taking place in the reactor. The developed CFD model closely agreed with data from both literature and experiments. An average absolute deviation of 8.59% and 6.32% was obtained when the CFD model was validated with a fixed bed reactor and membrane reactor experiments respectively. The membrane reactor enabled equilibrium conversion at 2.95 gcat.h/mol CO weight-time with equilibrium conversion attained at lower weight-time and steam to carbon ratio of 3.4. Also, it was found that the counter-flow configuration resulted in better enhanced CO conversion, and the wall heat transfer coefficient above 8.6 W/m2/K had negligible on conversion, amounting to only a 1% increase in conversion for both reactors. [ABSTRACT FROM AUTHOR] |
| Copyright of Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers Part A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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