Aisin Seiki Kabushiki Kaisha

Osaka Gas Company Limited

Hiroki Ohkawara

Susumu Takami

Shin Iwata

Takashi Amano

Minoru Suzuki

A fuel cell system includes a source gas passage including a first desulfurizer that has a desulfurization performance relative to a source gas having a relatively higher dew point, and a second desulfurizer that has the desulfurization performance relative to a source gas having a relatively lower dew point and the source gas having the relatively higher dew point. The desulfurization performance of the second desulfurizer relative to the source gas having the relatively higher dew point is lower than the desulfurization performance of the second desulfurizer relative to the source gas having the relatively lower dew point. The first desulfurizer, the second desulfurizer, and a flowmeter are arranged at the source gas passage in the aforementioned order from an upstream side to a downstream side of the source gas passage in a flow direction of the source gas.

Fuel cell system

A desulfurization unit for a fuel cell system includes a first desulfurizer arranged in a temperature environment ranging from 50&#xb0; C. to 200&#xb0; C. and accommodating a desulfurizing agent including a porous material serving as a base material, the desulfurizing agent exerting a desulfurization effect in a normal temperature range, the first desulfurizer adsorbing a sulfur compound included in a source gas in the temperature environment ranging from 50&#xb0; C. to 200&#xb0; C. when the source gas having a low dew point is supplied through a source gas passage to the first desulfurizer and when the source gas having a high dew point is supplied through the source gas passage to the first desulfurizer.

Growing community of inventors

Okazaki, Japan

Hiroki Ohkawara