Tokai National Higher Education and Research System

Sawafuji Electric Co., Ltd.

Yukio Hayakawa

Tomonori Miura

Shinji Kambara

Tatsuya Ikeda

Provided are a hydrogen recycle system and a hydrogen recycle method, whereby hydrogen can be purified to high purity at high yield from a gas, said gas being exhausted from a nitride compound production device, and recycled. The hydrogen recycle systemcomprises an exhaust gas supply pathsupplying a gas exhausted from a nitride compound production device, a hydrogen recycle meansand a hydrogen supply path. The hydrogen recycle meansof the hydrogen recycle systemis characterized by comprising: a plasma reaction vesselthat defines at least a part of a discharge space; a hydrogen separation membranethat divides the discharge spacefrom a hydrogen flow pathcommunicated with the hydrogen supply path, defines at least a part of the discharge spaceby one surface thereof and also defines at least a part of the hydrogen flow pathby the other surface thereof; an electrodethat is disposed outside the discharge space; and an adsorbentthat is filled in the discharge spaceand adsorbs the supplied exhaust gas.

Hydrogen recycle system and hydrogen recycle method

Provided are a hydrogen recycle system and a hydrogen recycle method, whereby hydrogen can be purified to high purity at high yield from a gas, said gas being exhausted from a nitride compound production device, and recycled. The hydrogen recycle system comprises an exhaust gas supply path supplying a gas exhausted from a nitride compound production device, a hydrogen recycle means and a hydrogen supply path. The hydrogen recycle means of the hydrogen recycle system is characterized by comprising: a plasma reaction vessel that defines at least a part of a discharge space; a hydrogen separation membrane that divides the discharge space from a hydrogen flow path communicated with the hydrogen supply path, defines at least a part of the discharge space by one surface thereof and also defines at least a part of the hydrogen flow path by the other surface thereof; an electrode that is disposed outside the discharge space; and an adsorbent that is filled in the discharge space and adsorbs the supplied exhaust gas.

Provided are a hydrogen purification device and a hydrogen purification method whereby hydrogen having a high purity can be purified at a high yield from a starting gas. The hydrogen purification device comprises: a starting gas source that supplies a starting gas, said starting gas containing hydrogen molecules and/or a hydride, to a discharge space; a plasma reactor that defines at least a part of the discharge space; a hydrogen flow channel that is connected to the discharge space; and leads out purified hydrogen from the starting gas source; a hydrogen separation membrane that partitions the discharge space from the hydrogen flow channel defines at least a part of the discharge space by one surface thereof and defines at least a part of the hydrogen flow channel by the other surface thereof; an electrode that is positioned outside the discharge space; and an adsorbent that is filled in the discharge space and adsorbs the starting gas. In the hydrogen purification method according to the present invention, the starting gas is adsorbed by the adsorbent in the discharge space. Hydrogen molecules, which have been desorbed from the adsorbent by discharge, are allowed to penetrate through the hydrogen separation membrane 4 and led out into the hydrogen flow channel.

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Aichi, Japan

Yukio Hayakawa