Browsing by Keyword "Membrane Reactors"
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Item Catalytic membrane reactor for the production of biofuels(2016-06-15) Liuzzi, Dalia; Pérez-Alonso, Francisco José; Fierro, José Luis G.; Rojas, Sergio; Van Wijk, Frank L.; Roghair, Ivo; Van Sint Annaland, Martin; Fernandez, Ekain; Viviente, Jose Luis; Tanaka, D. A.Pacheco; TECNOLOGÍAS DE HIDRÓGENO; TECNOLOGÍA DE MEMBRANAS E INTENSIFICACIÓN DE PROCESOSThe H2-distributed feeding concept using Pd/Ag-based membranes and an Ru-based catalyst in a Packed Bed Membrane Reactor (H2-PBMR) for the synthesis of biofuels via the so-called Fischer-Tropsch Synthesis has been demonstrated. The most successful approach resulted when H2-poor syngas (H2/CO = 1) typically obtained from the gasification of biomass was fed directly through the reaction chamber, i.e., to the catalyst bed, whereas the H2 needed to reach the proper stoichiometry for the FTS (H2/CO = 2) was admitted, and properly distributed, into the catalyst bed through the Pd/Ag-based membrane by flowing H2/He mixtures at the retentate side of the membrane. Under the optimum reaction conditions, the CO conversion measured with the H2-distributed feeding concept is lower than that obtained in a conventional Packed Bed Reactor with H2/CO = 2 (37.9 vs 50.7%), but significantly higher than that obtained in a conventional reactor with H2/CO = 1 (14.1%). Remarkably, the productivity towards high-molecular hydrocarbons increases by almost 70% and the methane production decreases by one order of magnitude when using the H2-distributed feeding concept in a Packed Bed Membrane Reactor.Item Membrane reactors using metallic membranes(Elsevier, 2020-01-08) Gallucci, Fausto; Pacheco Tanaka, D. A.; Medrano, J. A.; Viviente Sole, J. L.; TECNOLOGÍA DE MEMBRANAS E INTENSIFICACIÓN DE PROCESOSA very interesting application of metallic membranes is their integration in multifunctional reactors called membrane reactors. This integration allows carrying out reaction and separation in a single device, which results in higher yields and milder conditions compared with conventional reactor systems. These results translate in lower CAPEX (because of reduction of reaction volume and circumventing downstream separations) and reduction of OPEX (because of milder conditions used in the reactor). This chapter introduces the concept of membrane reactors and gives an overview of the latest results achieved in membrane reactor performance and operation.