Korea Atomic Energy Research Institute

Korea Hydro Nuclear Power Co., Ltd.

Sungdeok Hong

Wonjae Lee

Minhwan Kim

Jaewon Park

Jonghwa Chang

Youngwan Kim

A high-temperature and high-pressure corrosion-resistant process heat exchanger for a nuclear hydrogen production system decomposes sulfite (SO) using heat from a high-temperature gas-cooled reactor to thereby produce sulfide (SO) and oxygen (O). The process heat exchanger comprises second and third system coolant channels, each of which is defined by a heat transmission fin, which is bent in a quadrilateral shape, and heat transmission plates, and has increased corrosion resistance thanks to ion-beam coating and ion-beam mixing using a material having high corrosion resistance. The third system coolant channel includes reaction catalysts for SOdecomposition, and is made of a super alloy. Thus, a system differential pressure between the second and third system coolant channels can be greatly maintained at a high temperature of 900&#xb0; C. or higher.

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Daejeon, South Korea

Sungdeok Hong