Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 37, Issue 10, Pages 8318-8329Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.02.166
Keywords
Laval nozzle; Bio-ethanol; Non-thermal plasma; Steam reforming; Hydrogen production
Categories
Funding
- National Nature Science Foundation [50908237]
- Specialized Research Fund for DoctoralProgram of Higher Education of China [200805581036]
- Guangdong Provincial Nature Science Foundation [845102750100150]
- Fundamental Research Funds for the Central Universities [09lgpy21]
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The hydrogen production from an easily transported liquid feedstock can be an efficient alternative for fuel cells application. The steam-oxidative reforming of bio-ethanol by a novel gliding arc discharge named Laval nozzle arc discharge (LNAD) was investigated in this paper at low temperature and atmospheric pressure. The conversion efficiency and product distributions, mainly of H-2 and CO, were studied as functions of O/C ratio, S/C ratio, the ethanol flow rate and input power. The voltage-ampere (V-I) characteristic is also discussed here concerning the non-thermal plasma effect on the bio-ethanol reforming. A high conversion rate and fair H-2 yield have been achieved, 90% and 40% respectively. When the ethanol flow rate (G(ethanol)) was 0.15 g s(-1) and S/C = 2.0, the minimum specific energy requirement of H-2 and CO were achieved at O/C = 1.4 with the specific energy input of 55.44 kJ per ethanol mole, 72.92 kJ mol(-1) and 80.20 kJ mol(-1) respectively. The optimal conditions for ethanol reforming seem to be S/C = 2.0 and O/C = 1.4-1.6, which are higher than those of the reaction's stoichiometry. This paper shows interesting results in comparison with the ethanol reforming assisted by other discharges. Compared with others, it features good conversion rate, low energy consumption and significantly reduced nitrogen oxide emission. Crown Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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