On the study of catalytic membrane reactor for water detritiation: Membrane characterization
| Autor: | Michèle Troulay, Jérémy Mascarade, Silvano Tosti, Xavier Joulia, Karine Liger, Xuan-Mi Meyer, Christophe Perrais |
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| Přispěvatelé: | Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Italian National Agency for New Technologies, Energy and Environment - ENEA (ITALY), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Laboratoire de Génie Chimique - LGC (Toulouse, France), CEA Cadarache, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Génie Chimique (LGC), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Italian National agency for new technologies, Energy and sustainable economic development [Frascati] (ENEA), Tosti, S. |
| Rok vydání: | 2013 |
| Předmět: |
Materials science
Hydrogen chemistry.chemical_element Catalytic membrane reactor Catalysis chemistry.chemical_compound [CHIM.GENI]Chemical Sciences/Chemical engineering Heavy water Génie chimique Detritiation General Materials Science Civil and Structural Engineering Concentration polarization Mechanical Engineering Isotope exchange Permeation Tritium waste Membrane Nuclear Energy and Engineering Deuterium Chemical engineering chemistry Tritium Heavy watera |
| Zdroj: | Fusion Engineering and Design Fusion Engineering and Design, 2013, 88 (6-8), pp.844-848. ⟨10.1016/j.fusengdes.2013.01.057⟩ |
| ISSN: | 0920-3796 |
| Popis: | Tritium waste recycling is a real economic and ecological issue. Generally under the non-valuable Q2O form (Q = H, D or T), waste can be converted into fuel Q2 for a fusion machine (e.g. JET, ITER) by isotope exchange reaction Q2O + H2 = H2O + Q2. Such a reaction is carried out over Ni-based catalyst bed packed in a thin wall hydrogen permselective membrane tube. This catalytic membrane reactor can achieve higher conversion ratios than conventional fixed bed reactors by selective removal of reaction product Q2 by the membrane according to Le Chatelier's Law. This paper presents some preliminary permeation tests performed on a catalytic membrane reactor. Permeabilities of pure hydrogen and deuterium as well as those of binary mixtures of hydrogen, deuterium and nitrogen have been estimated by measuring permeation fluxes at temperatures ranging from 573 to 673 K, and pressure differences up to 1.5 bar. Pure component global fluxes were linked to permeation coefficient by means of Sieverts' law. The thin membrane (150 μm), made of Pd-Ag alloy (23 wt.% Ag), showed good permeability and infinite selectivity toward protium and deuterium. Lower permeability values were obtained with mixtures containing non permeable gases highlighting the existence of gas phase resistance. The sensitivity of this concentration polarization phenomenon to the composition and the flow rate of the inlet was evaluated and fitted by a two-dimensional model. © 2013 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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