The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2004
Filed:
Jun. 25, 2001
Manabu Oku, Shin-Nanyo, JP;
Kouichi Kawatani, Tokyo, JP;
Takeshi Utsunomiya, Tokyo, JP;
Tsutomu Seki, Tokyo, JP;
Other;
Abstract
A ferritic stainless steel sheet containing 16-25 mass % of Cr and Ti and/or Nb at a ratio of (C+N)×8 or more is used as a substrate for formation of a hydrogen-permeating membrane exposed to a high-temperature atmosphere of 600-900° C., while another ferritic stainless steel sheet containing Cr up to 15 mass % is used as a substrate for formation of a hydrogen-permeating membrane exposed to a high-temperature atmosphere of 450-600° C. The stainless steel sheet is formed to a perforated body 3 with holes for passage of gas. A hydrogen-permeating membrane 3 is fixed to on an external surface of the perforated body 3 to build up a hydrogen-separating pipe 3. A plurality of the hydrogen-separators 3 are inserted into a cavity between inner and outer walls of a double-pipe 2 filled with a catalyst 4. Hydrocarbon gas fed through a nozzle 7 is decomposed with combustion heat of a fuel F fed into an inner space of the double-pipe 2. A decomposition product H selectively permeates through the membrane 3 and flows out through the takeout opening 8.