Kabushiki Kaisha Toshiba

Noboru Jimbo

Kazuya Yamada

Hideki Nakamura

Kazuo Murakami

Ryouta Takahashi

Haruhiko Takase

Shigeki Maruyama

Wataru Kono

Toru Sakamoto

Katsuhiko Sato

Yoshimi Tanaka

Masataka Tamura

A hydrogen iodide manufacturing method which includes a step of producing aqueous solution of hydrogen iodide and sulfuric acid by causing iodine-containing aqueous solution and sulfur dioxide to react with each other in a pressurized condition. The pressurized condition may be of not lower than 0.1 MPa in gauge pressure. The method may further include: a separation step of adding iodine to the aqueous solution of hydrogen iodide and separating an upper phase containing sulfuric acid relatively to a large extent and a lower phase containing hydrogen iodide relatively to a large extent; and a step of producing hydrogen iodide by adding sulfur dioxide to the upper phase in a pressurized condition and extracting the produced hydrogen iodide to the lower phase.

Hydrogen iodide manufacturing method and hydrogen iodide manufacturing apparatus

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Kanagawa, Japan

Noboru Jimbo