Toto Ltd.

Chihiro Kobayashi

Masahiro Yamamoto

Megumi Shimazu

Takashi Tsuchida

Tomonori Tokumoto

Tetsuya Kurokawa

Naoki Watanabe

Akira Kawakami

Katsuhisa Tsuchiya

Toshiharu Otsuka

Shuichiro Saigan

Nobuo Isaka

Shigeru Ando

Takuya Matsuo

Yousuke Akagi

Yasuo Kakinuma

Koji Omoshiki

Yuya Takahashi

Mitsunobu Shiono

Masato Ota

To provide a solid oxide fuel cell system capable of avoiding the reduction of air electrodes. The present invention is a solid oxide fuel cell system including: a fuel cell module, a fuel supply apparatus, a water supply apparatus, an oxidant gas supply apparatus, a reformer, and a control section for controlling the extraction of power, whereby the controller having a shutdown stop circuit for executing a shutdown stop when the fuel cell stack is above the predetermined temperature, and after a shutdown stop, during a period when pressure on the fuel electrode side is sufficiently higher than pressure on the air electrode side, and no reverse flow of oxidant gas to the fuel electrode side is occurring, a temperature drop operation is executed whereby high temperature oxidant gas remaining on the oxidant gas electrode side is discharged.

Solid oxide fuel cell system

In a fuel cell unitthat constitutes a fuel cell moduleof an SOFC device, a collector capis connected to an inner electrode layervia a seal materialas an Ag seal portion. A glass coating(dense body) is filled up between the inner electrode layerand an electrolyte layerand the collector capto cover an upper end surfaceof the seal material. As such, the fuel cell unitincludes the seal materialconstituting as an Ag seal portion that separates a fuel gas from an oxidant gas, and a glass coatingat least partially formed to over at least either the fuel gas side surface of the seal materialor an the oxidant gas side surface of the seal material

Solid oxide fuel cell device

Hydrogen sulfide is dehydrogenated to generate a HS group and an S group. The HS group is oxidized to generate sulfuric acid, which is bonded to a metal. The S group is polymerized with a CH,S group to generate methyl trisulfide or methyl tetrasulfide, which is adsorbed to an adsorbent. Methyl mercaptan is dehydrogenated, for example, to generate a CH,S group. A portion of the CH,S group is oxidized to generate methanesulfonic acid, which is bonded to a metal. Another portion of the CH,S group is polymerized with the CH,S group itself to generate methyl disulfide, at least a portion of which is adsorbed to an adsorbent. Still another portion of the CH,S group is polymerized with the S group to generate methyl trisulfide or methyl tetrasulfide, which is physically adsorbed to an adsorbent. In this manner, malodor components including hydrogen sulfide and methyl mercaptan can efficiently be removed without producing or release of harmful secondary products. A simple-structure, compact deodorizing apparatus including appropriate metal oxide catalyst and an adsorbent material suitable for achieving the above deodorizing functions is incorporated in a toilet bowl.

Room temperature deodorizing method based on a polymerization reaction, an oxidation reaction and adsorption

Deodorizing method, deodorizer, method of manufacturing deodorizer, and

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Chigasaki, Japan

Chihiro Kobayashi