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Solar gasification of biomass / Brandon J. Hathaway in Transactions of the ASME. Journal of solar energy engineering, Vol. 133 N° 2 (Mai 2011) 

Public ISBD [article]  in Transactions of the ASME. Journal of solar energy engineering > Vol. 133 N° 2 (Mai 2011) . - 09 p. Titre : Solar gasification of biomass : kinetics of pyrolysis and steam gasification in molten salt Type de document : texte imprimé Auteurs : Brandon J. Hathaway, Auteur ; Jane H. Davidson, Auteur ; David B. Kittelson, Auteur Année de publication : 2012 Article en page(s) : 09 p. Note générale : Solar energy Langues : Anglais (eng) Mots-clés : Electric  furnaces  Fuel  gasification  Heat  transfer  Hydrogen  production  Lithium  Mass  transfer  Potassium  Pyrolysis  Reaction  kinetics  Sodium  Solar  energy  conversion  Stability Index. décimale : 621.47 Résumé : The use of concentrated solar energy as a heat source for pyrolysis and gasification of biomass is an efficient means for production of hydrogen rich synthesis gas. Utilizing molten alkali carbonate salts as a reaction and heat transfer media promises enhanced stability to solar transients and faster reaction rates. The present study establishes and compares the reaction kinetics of pyrolysis and gasification of cellulose from 1124 K to 1235 K in an electric furnace. Data are presented in an inert environment and in a bath of a ternary eutectic blend of lithium, potassium, and sodium carbonate salts. Arrhenius rate expressions are derived from the data supported by a numerical model of heat and mass transfer. The molten salt increases the rate of pyrolysis by 74% and increases gasification rates by more than an order of magnitude while promoting a product gas composition nearer to thermodynamic equilibrium predictions. These results justify using molten carbonate salts as a combined catalyst and heat transfer media for solar gasification. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000133000002 [...] [article] Solar gasification of biomass : kinetics of pyrolysis and steam gasification in molten salt [texte imprimé] / Brandon J. Hathaway, Auteur ; Jane H. Davidson, Auteur ; David B. Kittelson, Auteur . - 2012 . - 09 p. Solar energy Langues : Anglais (eng) in Transactions of the ASME. Journal of solar energy engineering > Vol. 133 N° 2 (Mai 2011) . - 09 p. Mots-clés : Electric  furnaces  Fuel  gasification  Heat  transfer  Hydrogen  production  Lithium  Mass  transfer  Potassium  Pyrolysis  Reaction  kinetics  Sodium  Solar  energy  conversion  Stability Index. décimale : 621.47 Résumé : The use of concentrated solar energy as a heat source for pyrolysis and gasification of biomass is an efficient means for production of hydrogen rich synthesis gas. Utilizing molten alkali carbonate salts as a reaction and heat transfer media promises enhanced stability to solar transients and faster reaction rates. The present study establishes and compares the reaction kinetics of pyrolysis and gasification of cellulose from 1124 K to 1235 K in an electric furnace. Data are presented in an inert environment and in a bath of a ternary eutectic blend of lithium, potassium, and sodium carbonate salts. Arrhenius rate expressions are derived from the data supported by a numerical model of heat and mass transfer. The molten salt increases the rate of pyrolysis by 74% and increases gasification rates by more than an order of magnitude while promoting a product gas composition nearer to thermodynamic equilibrium predictions. These results justify using molten carbonate salts as a combined catalyst and heat transfer media for solar gasification. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000133000002 [...]