Fuel reforming system and stopping method thereof
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United States of America Patent
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-
Sep 7, 2004
Grant Date -
May 23, 2002
app pub date -
Oct 31, 2001
filing date -
Nov 20, 2000
priority date (Note) -
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Abstract
When a fuel reforming system for a fuel cell comprising an autothermal reformer 1 wherein a partial oxidation reaction and steam reforming reaction proceeds simultaneously, is stopped, firstly, a supply valve 6 is closed to stop supply of fuel and water for steam reforming, and a supply valve 7 is closed after a predetermined time has elapsed to stop supply of air. In this way, the partial oxidation reaction which is an exothermic reaction is continued temporarily and the catalyst layer temperature of the reformer 1 is raised, so the catalyst layer temperature can be maintained high until the system restarts, and the time required for restarting the system can be shortened.
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