Syngas production from wood pellet using filtration combustion of lean natural gaseair mixtures Karina Araus, Felipe Reyes, Mario Toledo* Department of Mechanical Engineering, Universidad Te ´cnica Federico Santa Marı´a, Av. Espan ˜a 1680, Valparaı´so, Chile article info Article history: Received 16 December 2013 Received in revised form 17 March 2014 Accepted 19 March 2014 Available online 16 April 2014 Keywords: Hydrogen Syngas production Hybrid filtration combustion Wood Gasification abstract A common method for the production of hydrogen and syngas is solid fuel gasification. This paper discusses the experimental results obtained from the combustion of lean nat- ural gaseair mixtures in a porous medium composed of aleatory alumina spheres and wood pellets, called hybrid bed. Temperature, velocity, and chemical products (H 2 , CO, CO 2 , CH 4 ) of the combustion waves were recorded experimentally in an inert bed (baseline) and hybrid bed (with a volume wood fraction of 50%), for equivalence ratios (4) from 0.3 to 1.0, and a constant filtration velocity of 15 cm/s. Upstream, downstream and standing com- bustion waves were observed for inert and hybrid bed. The maximum hydrogen conversion in hybrid filtration combustion is found to be w99% at 4 ¼ 0.3. Results demonstrate that wood gasification process occurs with high temperature (1188 K) and oxygen available, and the lean hybrid filtration process can be used to reform solid fuels into hydrogen and syngas. Copyright ª 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. Introduction Currently hydrogen (H 2 ) is considered the fuel of the future as a possible replacement for hydrocarbons. It is a clean fuel, primarily to its low level of contamination when is burned. It more energy per unit mass than any other fuel and applica- tions of H 2 as an energy source include electricity via fuel cell [1]. Also hydrogen has disadvantages as low energy content per unit volume, stored as liquid or compressed forms re- quires special and expensive infrastructure, and safety as- pects. Hydrogen can be obtained from either renewable or non-renewable sources. Reforming methane (CH 4 ) with the addition of water vapors is the industrial process most utilized and economically feasible for the H 2 production [2,3]. However, carbon dioxide (CO 2 ) is generated during its pro- duction contributing to greenhouse gases and the subsequent global warming. The main challenge competing energy requirement and environmental protection is to find the bal- ance between sustainable energy while reducing CO 2 emis- sions generated by fossil fuels. As such, biomass can be considered an excellent alternative to the production of energy. Biomass is considered a renewable source of energy with zero emissions of CO 2 to the atmosphere. It is available in a diverse array of forms and types; animal refuse, forestry residues and agriculture waste. There are also a number of technologies available for the production of H 2 , syngas, electricity, and generation of heat using biomass as the starting feedstock; these include combustion, gasification, * Corresponding author. E-mail address: [email protected]( Mario Toledo). Available online at www.sciencedirect.com ScienceDirect journal homepage: www.elsevier.com/locate/he international journal of hydrogen energy 39 (2014) 7819 e7825 http://dx.doi.org/10.1016/j.ijhydene.2014.03.140 0360-3199/Copyright ª 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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Producción de syngas a partir de pellets de madera usando combustión de mezclas de gas natural y aire
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i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n en e r g y 3 9 ( 2 0 1 4 ) 7 8 1 9e7 8 2 5
Available online at w
ScienceDirect
journal homepage: www.elsevier .com/locate/he
Syngas production fromwood pellet using filtrationcombustion of lean natural gaseair mixtures
Karina Araus, Felipe Reyes, Mario Toledo*
Department of Mechanical Engineering, Universidad Tecnica Federico Santa Marıa, Av. Espana 1680,
i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n en e r g y 3 9 ( 2 0 1 4 ) 7 8 1 9e7 8 2 5 7825
Acknowledgments
The authors wish to acknowledge the support by the CON-
ICYT-Chile (FONDECYT 1121188).
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