Possibility Study in CO 2 Free Hydrogen Production Using Dodecane (C 12 H 26 ) from Plasma Reaction

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

Energies, 2023, vol. 16, issue 4, 1-13

Abstract: Turquoise hydrogen refers to hydrogen produced through a fossil-fuel-based process in which carbon is separated into solid carbon and no carbon dioxide is produced. In this study, dodecane was selected as a simulated oil for waste plastic pyrolysis recovery oil, and the turquoise hydrogen production characteristics through the thermal cracking reaction using an arc plasma torch were investigated. The plasma was stably discharged at 2 to 4 kW. Hydrogen in the produced gas was analyzed through an online IR gas analyzer, and hydrocarbons from C 1 to C 5 were analyzed through GC-FID. As a result of the experiment, the hydrogen yield tended to increase as the plasma power increased, and a maximum of 11.5% based on mass was obtained. On the other hand, carbon oxides such as CO and CO 2 were not generated. Along with hydrogen, the valuable by-products of this process are solid carbon and gaseous hydrocarbons. The solid carbon yields also increased up to 66% as the plasma power increased. On the other hand, the yield of gaseous hydrocarbons showed an opposite trend to that of hydrogen and carbon and consisted mainly of C 2 series (average content of 77%) and olefins (average fraction of 0.67). Consequently, it can be considered that the plasma thermal cracking is a promising technology for the CO 2 -free hydrogen production, as well as solid carbon and C 2 -olefin.

Keywords: turquoise H 2; plasma thermal cracking; dodecane; solid carbon; C 2 -olefin (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: 2023
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