Research on the Production of Turquoise Hydrogen from Methane (CH 4 ) through Plasma Reaction

Dong-Kyoo Park, Soo-Nam Park, Hyun-Ji Kim, Hyo-Sik Kim, Ji-Hyeon Kim and Jae-Hong Ryu ()
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Dong-Kyoo Park: Institute for Advanced Engineering, Yongin 41718, Republic of Korea
Soo-Nam Park: Institute for Advanced Engineering, Yongin 41718, Republic of Korea
Hyun-Ji Kim: Institute for Advanced Engineering, Yongin 41718, Republic of Korea
Hyo-Sik Kim: Institute for Advanced Engineering, Yongin 41718, Republic of Korea
Ji-Hyeon Kim: Institute for Advanced Engineering, Yongin 41718, Republic of Korea
Jae-Hong Ryu: Institute for Advanced Engineering, Yongin 41718, Republic of Korea

Energies, 2024, vol. 17, issue 2, 1-15

Abstract: Turquoise hydrogen is produced through a process of separating carbon into solid carbon based on fossil fuels and refers to hydrogen that does not produce carbon dioxide. In this study, the characteristics of turquoise hydrogen production through a methane thermal cracking reaction using an arc plasma torch were investigated. The plasma torch operated stably under high voltage and transport gas flow conditions. The composition of the gas generated from the methane plasma reaction was analyzed using an online IR gas analyzer and GC-FID. The experimental results show that the hydrogen yield decreased to 16.4% as the methane feed rate increased but increased to 58.8% as the plasma power increased. Under these conditions, the yield of solid carbon, a valuable byproduct, was also shown to increase to 62.9%. In addition, solid carbon showed high-temperature heat-treated characteristics based on its generation location. Carbon oxides such as CO and CO 2 are rarely generated under any experimental conditions. Consequently, it can be considered that plasma thermal cracking is a promising technology for CO 2 -free hydrogen production and a valuable solid carbon.

Keywords: turquoise H 2; plasma; thermal cracking; methane; solid carbon (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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