MODERATE LOW SULFURIZATION BY HYDROGENATION TREATMENT/ EXTRACTION FOR USING IN FUEL CELL

Japanese Patent JP2003020485

A

To provide a method of desulfurization, attached directly to a fuel cell, performing the desulfurization of its fuel as a part of the fuel cell system and capable of directly supplying the fuel as a fuel for a PEM fuel cell.

This method of desulfurization comprises bringing a hydrocarbon-based fuel containing sulfur in contact with hydrogen in the presence of a hydrogenation catalyst at 300-500°F temperature, 50-500 psig total pressure and 0.5-10 hr-1 space velocity for a sufficient time to convert up to 95% thiophene presenting in the fuel, and also bringing the above hydrogenation- treated hydrocarbon-based fuel in contact with a solid adsorbent or a liquid extracting agent selected from reducing the sulfur compound remaining in the above fuel to ≤5.0 ppm, recovering the hydrocarbon-based fuel reduced with the sulfur content and supplying it as the fuel for the PEM fuel cell.

JOSSENS LAWRENCE W
DIECKMANN GUNTHER H
MUNSON CURTIS

JP2002101363A

January 24, 2003

April 03, 2002

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CHEVRON USA INC

B01J20/02; B01J20/08; B01J20/12; C10G21/00; C10G25/06; C10G45/04; C10G45/08; C10G45/10; C10G49/10; C10G65/04; C10G65/06; C10G67/04; C10G67/06; H01M8/06; H01M8/10; (IPC1-7): C10G67/06; B01J20/02; B01J20/08; B01J20/12; C10G21/00; C10G25/06; C10G45/08; C10G45/10; C10G67/04; H01M8/06; H01M8/10

JPH04285691A	1992-10-09
JPH0680972A	1994-03-22

WO1999067018A1	1999-12-29
WO2000039873A1	2000-07-06
WO2000078443A1	2000-12-28

Akira Asamura (3 outside)

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