58347 20200221144244.0 doi 10.1016/j.cej.2015.08.127 sideral 92828 ART-2016-92828 eng (orcid)0000-0003-3211-0485 Julián, I. Gas permeation effect on the Two-Section Two-Zone Fluidized Bed Membrane Reactor (TS-TZFBMR) fluid dynamics: A CFD simulation study 2016 Access copy available to the general public Unrestricted Two-Fluid Model simulations were conducted using the commercial software Ansys CFX and Fluent to study the effect of the gas extraction on the fluid dynamic behavior of a membrane-assisted Two-Section Two-Zone Fluidized Bed Membrane Reactor (TS-TZFBMR). Simulated bubble properties and bed dynamics were analyzed and compared among different membrane reactor configurations, including reactor-wall (RWM) and immersed tubular (ITM) membranes, for their future use in catalytic reactions, e.g., alkane dehydrogenation or methane steam reforming. According to the solids hold-up distribution at different fluidization regimes and permeation fluxes, the ITM configuration is the most suitable to enhance the gas-particle contact and to favor the solids axial mixing for in-situ catalyst regeneration purposes. However, the RWM configuration provides a greater permeation area for selective gas removal and is preferred to enhance purification. It was found that relative permeation fluxes above 20% of the total feed gas have a significant impact on the fluid dynamic regime within the TS-TZFBMR, concerning the appearance of local defluidized regions, gas channeling and solids axial mixing. info:eu-repo/grantAgreement/ES/MINECO/CTQ2010-15568 info:eu-repo/grantAgreement/ES/MINECO/ENE2013-44350-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 6.216 2016 ENGINEERING, ENVIRONMENTAL 3 / 49 = 0.061 2016 Q1 T1 ENGINEERING, CHEMICAL 6 / 135 = 0.044 2016 Q1 T1 1.758 2016 Chemical Engineering (miscellaneous) 2016 Q1 Industrial and Manufacturing Engineering 2016 Q1 Environmental Chemistry 2016 Q1 Chemistry (miscellaneous) 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0003-1940-9597 Herguido, J. Universidad de Zaragoza (orcid)0000-0002-2494-102X Menéndez, M. Universidad de Zaragoza 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 301 (2016), 201-211 Chem. eng. j. Chemical Engineering Journal 1385-8947 761141 http://zaguan.unizar.es/record/58347/files/texto_completo.pdf Postprint 100360 http://zaguan.unizar.es/record/58347/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:58347 articulos driver 2020-02-21-13:23:16 ARTICLE