The performance of an original membrane methane reformer is analyzed by a two-dimensional mathematical model. The reactor is a bundle of four coaxial double tubes inserted in a shell in which a heating fluid flows. The annular region of each tube is the reaction zone, whereas the inner tube is the selective membrane for hydrogen removal. Many simulations have been carried out in order to find a suitable set of values of geometric and operating design variables. The effect of pressure and sweeping gas flow rate at permeation side, of membrane diameter and of axial profile of heat flux supplied to the reactor is analyzed in 81 virtual experiments. Suitable operating conditions are found: over 58% methane conversion can be reached, within a proper membrane temperature range and extra methane consumption for thermal duty. © 2007 Elsevier B.V. All rights reserved.

The effect of heat-flux profile and of other geometric and operating variables in designing industrial membrane methane steam reformers / DE FALCO, Marcello; P., Nardella; Marrelli, Luigi; DI PAOLA, Luisa; A., Basile; F., Gallucci. - In: CHEMICAL ENGINEERING JOURNAL. - ISSN 1385-8947. - 138:1-3(2008), pp. 442-451. [10.1016/j.cej.2007.06.026]

The effect of heat-flux profile and of other geometric and operating variables in designing industrial membrane methane steam reformers

DE FALCO, Marcello;MARRELLI, Luigi;DI PAOLA, Luisa;
2008

Abstract

The performance of an original membrane methane reformer is analyzed by a two-dimensional mathematical model. The reactor is a bundle of four coaxial double tubes inserted in a shell in which a heating fluid flows. The annular region of each tube is the reaction zone, whereas the inner tube is the selective membrane for hydrogen removal. Many simulations have been carried out in order to find a suitable set of values of geometric and operating design variables. The effect of pressure and sweeping gas flow rate at permeation side, of membrane diameter and of axial profile of heat flux supplied to the reactor is analyzed in 81 virtual experiments. Suitable operating conditions are found: over 58% methane conversion can be reached, within a proper membrane temperature range and extra methane consumption for thermal duty. © 2007 Elsevier B.V. All rights reserved.
2008
design variables; hydrogen production; membrane reactor; methane steam reforming
01 Pubblicazione su rivista::01a Articolo in rivista
The effect of heat-flux profile and of other geometric and operating variables in designing industrial membrane methane steam reformers / DE FALCO, Marcello; P., Nardella; Marrelli, Luigi; DI PAOLA, Luisa; A., Basile; F., Gallucci. - In: CHEMICAL ENGINEERING JOURNAL. - ISSN 1385-8947. - 138:1-3(2008), pp. 442-451. [10.1016/j.cej.2007.06.026]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/365706
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