| abstract |
A hydrogen generating apparatus(100) includes a reformer(2) generating hydrogen-containing gas through a reforming reaction, a raw material supplier(4) supplying a raw material to the reformer(2), a reaction gas supplier(6) supplying reaction gas other than the raw material to the reformer(2), a hydro-desulfurizer(8) removing a sulfur compound in the raw material supplied to the reformer(2), a recycle flow passage(10) through which part of the hydrogen-containing gas generated by the reformer(2) is supplied to the hydro-desulfurizer(8), a closing device(12) that closes the recycle flow passage(10), and a controller(14) that, when stopping operation, closes the closing device(12) and controls the raw material supplier(4) and the reaction gas supplier(6) such that the raw material and the reaction gas are supplied to the reformer(2), before a temperature of the reformer(2) drops down to a temperature at which deposition of carbon from the raw material on a reformation catalyst disposed inside the reformer(2) is suppressed. |