Panasonic Intellectual Property Management Co., Ltd.

Hirofumi Kokubu

Akinari Nakamura

Yoshio Tamura

Koichi Kusumura

Takahiro Kusuyama

Shigeru Iiyama

Hiroaki Kitagawa

Akihisa Yoshimura

A hydrogen generator includes: a reformer configured to generate a hydrogen-containing gas by a reforming reaction using a material gas; a hydro-desulfurizer configured to remove a sulfur compound in the material gas; a material gas passage through which the material gas supplied to the reformer flows; a recycled gas passage connected between a first connection portion of a gas passage located downstream of the reformer and a second connection portion of the material gas passage located upstream of the hydro-desulfurizer; a first on-off valve disposed on the recycled gas passage; a second on-off valve disposed on the material gas passage between the second connection portion and the hydro-desulfurizer; and a controller configured to open the first on-off valve, after generation stop of the hydrogen-containing gas, to supply the material gas to the recycled gas passage, and to close the second on-off valve when the controller opens the first on-off valve.

Hydrogen generator, fuel cell system, and method of operating hydrogen generator

A fuel cell system includes: a fuel cell configured to generate electric power by using a hydrogen-containing gas; a catalyst, which reacts with an oxidizing gas by oxidation; an oxidizing gas supply device configured to supply the oxidizing gas to the catalyst; and a controller configured to control, before removal of the catalyst to outside, the oxidizing gas supply device to perform an oxidizing process of oxidizing the catalyst.

Fuel cell system and method of operating fuel cell system

A hydrogen generator comprises a reformer configured to generate a hydrogen-containing gas through a reforming reaction using a raw material; a hydrodesulfurization unit configured to remove a sulfur compound from the raw material; a recycle passage configured to flow therethrough the hydrogen-containing gas to be added to the raw material in a state before the raw material flows into the hydrodesulfurization unit, the recycle passage having a downward slope; and a water drain passage configured to discharge condensed water generated in the downward slope of the recycle passage.

Hydrogen generator and fuel cell system

Growing community of inventors

Shiga, Japan

Hirofumi Kokubu