Method and system for supplying hydrogen to fuel cell

摘要

A method for supplying hydrogen to a fuel cell comprising (a) a medium-reducing step, which comprises reforming (1) a liquid fuel to generate a reformed gas containing hydrogen and carbon monoxide, and supplying the reformed gas to a hydrogen-purifying unit (2A,2B) containing a carbon monoxide-oxidizing catalyst and a hydrogen-generating medium, to reduce the hydrogen-generating medium (2a) and oxidize the carbon monoxide; and (b) a medium-oxidizing step, which comprises supplying steam to a hydrogen-purifying unit containing a carbon monoxide-oxidizing catalyst (1a) and a hydrogen-generating medium, to generate hydrogen while oxidizing the hydrogen-generating medium, the medium-reducing step and the medium-oxidizing step being conducted alternately.