Effect of introducing a steam pipe to n-dodecane decomposition by in-liquid plasma for hydrogen production

被引:6
作者
Shiraishi, Ryoya [1 ]
Nomura, Shinfuku [1 ]
Toyota, Hiromichi [1 ]
Mukasa, Shinobu [1 ]
Amano, Yuki [1 ]
机构
[1] Ehime Univ, Grad Sch Sci & Engn, Bunkyocho 3, Matsuyama, Ehime 7908577, Japan
关键词
Hydrogen; n-dodecane; In-liquid plasma; Steam reforming; METHANE HYDRATE; BIOMASS; ENERGY; PERFORMANCE; IMPROVEMENT; EFFICIENCY; SYSTEM;
D O I
10.1016/j.ijhydene.2019.04.270
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A method has been developed to improve the hydrogen production efficiency (HPE) by in-liquid plasma n-dodecane decomposition. A thin steam pipe is placed over the plasma electrode to recover the thermal energy emitted from the plasma to its surroundings. The steam generated by this energy is supplied to the vaporized n-dodecane around the edge of the plasma to cause a steam reforming reaction (SRR). Water pyrolysis is suppressed by not supplying the steam directly to the plasma. A large amount of CO and a small amount of CO2 were detected in the produced gas. This indicates that a strong SRR has occurred. The HPE obtained by this method is 0.28 Nm(3)/kWh, which is two times greater than those obtained by previous methods, and similar to or greater than the yield of water electrolysis. This result is a major advance in the field of plasma heavy hydrocarbon decomposition aimed at hydrogen production. HPE is expected to be further improved by simply increasing the input power, due to synergy between the heat recovery effect of the steam pipe and the bubble stabilization effect. This indicates that this method has a high potential. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:16248 / 16256
页数:9
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