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Open AccessArticle

Techno-Economic Assessment in a Fluidized Bed Membrane Reactor for Small-Scale H2 Production: Effect of Membrane Support Thickness

1
Department of Mechanical and Industrial Engineering, University of Brescia, 25123 Brescia, Italy
2
Inorganic Membranes and Membrane Reactors, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands
3
Politecnico di Milano, Department of Energy, 20156 Milano, Italy
*
Author to whom correspondence should be addressed.
Membranes 2019, 9(9), 116; https://doi.org/10.3390/membranes9090116
Received: 6 August 2019 / Revised: 3 September 2019 / Accepted: 3 September 2019 / Published: 6 September 2019
This paper investigates the influence of the support material and its thickness on the hydrogen flux in Palladium membranes in the presence of sweep gas in fluidized bed membrane reactors. The analysis is performed considering both ceramic and metallic supports with different properties. In general, ceramic supports are cheaper but suffer sealing problems, while metallic ones are more expensive but with much less sealing problems. Firstly, a preliminary analysis is performed to assess the impact of the support in the permeation flux, which shows that the membrane permeance can be halved when the H2 diffusion through the support is considered. The most relevant parameter which affects the permeation is the porosity over tortuosity ratio of the porous support. Afterward, the different supports are compared from an economic point of view when applied to a membrane reactor designed for 100 kg/day of hydrogen, using biogas as feedstock. The stainless steel supports have lower impact on the hydrogen permeation so the required membrane surface area is 2.6 m2 compared to 3.6 m2 of the best ceramic support. This ends up as 5.6 €/kg H[email protected] and 6.6 €/kg H[email protected] for the best stainless steel support, which is 3% lower than the price calculated for the best ceramic support. View Full-Text
Keywords: hydrogen permeation; fluidized membrane reactor; permeance hydrogen permeation; fluidized membrane reactor; permeance
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Di Marcoberardino, G.; Knijff, J.; Binotti, M.; Gallucci, F.; Manzolini, G. Techno-Economic Assessment in a Fluidized Bed Membrane Reactor for Small-Scale H2 Production: Effect of Membrane Support Thickness. Membranes 2019, 9, 116.

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