FUEL REFORMER AND ITS STOPPING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a fuel reformer able to exhaust and treat safely a residual fuel gas after stopping its operation without a particular equipment or utilities and to prevent poisoning a reforming catalyst and a fuel cell and easy to be compact for setting in car and its stopping method. SOLUTION: The residual gas in a partial oxidation reformer 14 is exhausted while superheat of the catalyst is controlled by supplying intermittently air to stop fuel gas supply after stopping the operation to the partial oxidation reformer 14 in which a combustion/reforming catalyst 15 to reform the fuel gas to a reformed gas containing hydrogen by heat generation at the partial oxidation of the fuel gas containing steam is packed. As a three-way valve is changed to a catalytic combustor side and the exhausted residual gas pressure is adjusted by a gas pressure adjuster 17, abnormal combustion in the catalytic combustor is controlled.