Gas separation: apparatus – Apparatus for selective diffusion of gases – Plural layers
Reexamination Certificate
2002-02-14
2008-11-11
Greene, Jason M (Department: 1797)
Gas separation: apparatus
Apparatus for selective diffusion of gases
Plural layers
C096S007000, C096S008000, C096S010000, C095S055000, C095S056000, C048S127900
Reexamination Certificate
active
07449052
ABSTRACT:
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.
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De Lapparent Dominique
Etievant Claude
Gaillard Fanny
Le Cren Roger
Pointet Karine
Browdy and Niemark, P.L.L.C.
Compagnie Europeenne des Technologies de l'Hydrogene
Greene Jason M
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