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Title:
HYDROGEN PURIFICATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2002/090248
Kind Code:
A1
Abstract:
A hydrogen purification apparatus for use in reducing carbon monoxide in a hydrogen gas, wherein a first catalyst selected from among Pt, Pd, Ru and Rh and a second catalyst selected from among Pd, Ru, Rh and Ni are mixed or combined in one piece and the resultant mixture or combination is used in a clarification catalyst element, wherein an alumina or a zeolite ion−exchanged with a first period transition metal is used as a heat−resistant catalyst carrier substrate of the clarification catalyst element in a form of pellets or a honeycomb structure, wherein the apparatus has two steps of clarification sections each containing the clarification catalyst element, and wherein the feed of an oxidizing gas is controlled through the detection of the temperature values of the clarification catalyst elements and the hydrogen gas. The apparatus allows the achievement of satisfactory clarification catalyst activity in a wide range of temperature, the stable reduction of a carbon monoxide concentration also in changes of load, and the suppression of consumption of hydrogen by oxidation.

Inventors:
TAGUCHI KIYOSHI (JP)
UKAI KUNIHIRO (JP)
FUJIWARA SEIJI (JP)
TOMIZAWA TAKESHI (JP)
WAKITA HIDENOBU (JP)
Application Number:
PCT/JP2002/004229
Publication Date:
November 14, 2002
Filing Date:
April 26, 2002
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
TAGUCHI KIYOSHI (JP)
UKAI KUNIHIRO (JP)
FUJIWARA SEIJI (JP)
TOMIZAWA TAKESHI (JP)
WAKITA HIDENOBU (JP)
International Classes:
B01J8/00; B01J8/04; B01J19/24; B01J23/40; B01J23/89; B01J35/00; B01J37/02; C01B3/58; H01M8/06; B01J35/04; (IPC1-7): C01B3/32; C01B3/40; B01J23/46; B01J23/89; H01M8/06
Domestic Patent References:
WO2000053696A12000-09-14
Foreign References:
JP2002126535A2002-05-08
JP2002121008A2002-04-23
JP2001224965A2001-08-21
JP2001261306A2001-09-26
EP1059118A22000-12-13
JP2001068136A2001-03-16
EP1059265A22000-12-13
EP1059264A12000-12-13
EP0955351A11999-11-10
JPH1072202A1998-03-17
EP0743694A11996-11-20
JPH08133702A1996-05-28
JPS5724835B21982-05-26
Attorney, Agent or Firm:
Matsuda, Masamichi (Miyahara 5-chome Yodogawa-ku Osaka-shi, Osaka, JP)
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