Kobe Steel, Ltd.

Nagoya University

Tokai National Higher Education and Research System

Kabushiki Kaisha Kobe Seiko Sho

National University Corporation Tokai National Higher Education and Research System

Takehiro Esaki

Akira Kishimoto

Hiroshi Machida

Katsuya Akiyama

Tsuyoshi Yamaguchi

Akira Matsuoka

Makoto Nishimura

Koyo Norinaga

Hirotoshi Horizoe

A gas treatment method includes an absorption step in which a gas to be treated containing an acidic compound, such as carbon dioxide, is brought into contact, in an absorber, with a treatment liquid that absorbs the acidic compound; and a regeneration step in which the treatment liquid, having the acidic compound absorbed therein, is sent to a regenerator, and the treatment liquid is then heated to separate the acidic compound from the treatment liquid. In the regeneration step, a gas almost insoluble to the treatment liquid, such as hydrogen gas, is brought into contact with the treatment liquid.

Gas treatment method and gas treatment apparatus

A gas treatment device uses a gas to be treated which contains an acid compound that dissolves into water to produce acid and a treatment liquid which absorbs the acid compound to phase-separate, to separate an acid compound from the gas to be treated. The gas treatment device includes an absorber which brings the gas to be treated into contact with the treatment liquid; a regenerator 14 which heats the treatment liquid contacting the gas to be treated to separate an acid compound; and a liquid feeding portion which feeds the treatment liquid contacting the gas to be treated in the absorber to the regenerator. In the absorber, the treatment liquid contacting the gas to be treated phase-separates into a first phase portion having a high acid compound content and a second phase portion having a low acid compound content. The liquid feeding portion is configured to introduce, into the regenerator, the treatment liquid with the phase-separated first phase portion and second phase portion mixed.

Gas treatment method and gas treatment device

Growing community of inventors

Aichi, Japan

Takehiro Esaki