B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/22 (2006.01) B01D 71/02 (2006.01) B01J 19/08 (2006.01) C01B 3/34 (2006.01) C01B 3/50 (2006.01)
Patent
CA 2438533
The invention relates to a composite structure consisting of a relatively long filtration bar comprising, from the outside, an ultra-thin layer (26) that is selectively permeable to hydrogen and made from palladium or silver alloy. Said layer is disposed on a permeable, rigid, refractory substrate consisting of a more or less solid body (30) that is covered with an intermediary thin layer (28) having a relatively smooth surface. The body (30) and the intermediary layer (28) are made respectively by sintering with fine and ultra-fine Inconel grains. A rigid metallic axial structure (32) is embedded in the body (30). Veinlets (31), which are made in the body (30) through the destruction of thermo-destructible wires during sintering, increase the permeability of the substrate. The invention is particularly applicable to hydrogen-producing combustible gas processors.
Une telle structure composite comprend un crayon de filtration relativement long comportant è partir de l'extérieur, une couche ultra-mince (26), sélectivement perméable à l'hydrogène, réalisée en alliage de palladium et d'argent, déposée sur un substrat réfractaire, rigide, perméable, constitué par un corps sensiblement plein (30), revêtu d'une couche mince intermédiaire (28), à surface relativement lisse. Le corps (30) et la couche intermédiaire (28) sont respectivement réalisés par frittage de grains d'Inconel fins et ultra-fins. Une armature axiale métallique rigide (32) est noyée dans le corps (30). Des veinules (31) réalisées dans le corps (30) par destruction de fils thermo-destructibles au cours du frittage, augmentent la perméabilité du substrat. L'invention s'applique notamment aux processeurs de gaz combustibles produisant de l'hydrogène.
de Lapparent Dominique
Etievant Claude
Gaillard Fanny
Le Cren Roger
Pointet Karine
Compagnie D'etude Des Technologies de L'hydrogene (ceth)
Compagnie Europeenne Des Technologies de L'hydrogene (ceth)
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