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Mechanism of tar generation during fluidized bed gasification and low temperature pyrolysis / Ute Wolfesberger-Schwabl in Industrial & engineering chemistry research, Vol. 51 N° 40 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13001-13007 Titre : Mechanism of tar generation during fluidized bed gasification and low temperature pyrolysis Type de document : texte imprimé Auteurs : Ute Wolfesberger-Schwabl, Auteur ; Isabella Aigner, Auteur ; Hermann Hofbauer, Auteur Année de publication : 2012 Article en page(s) : pp. 13001-13007 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Pyrolysis  Low  temperature  Gasification  Fluidized  bed  Fluidization Résumé : This work focuses on the comparison of two different thermal conversion processes with respect to different tar amounts and tar compositions at different temperatures and process parameters. Steam gasification experiments were carried out in a 100 kW dual fluidized bed steam gasifier at a temperature range of 700 to 870 °C with straw and wood. Pyrolysis experiments were conducted in a rotary kiln reactor at temperatures between 600 and 630 °C and straw as fuel. For better understanding of tar formation during thermo-chemical conversion of biomass, the tar content and composition in the product gas were analyzed with a gas chromatograph coupled with a mass spectrometer. The main observation was that at higher temperatures the tar composition is shifted to higher molecular tars such as polyaromatic hydrocarbons (PAH). Key tar components at lower temperatures (pyrolysis) are phenols. The tar content and composition in the product gas of steam gasification of straw and wood as well as the tar yields and composition of low temperature pyrolysis of straw are presented in the following work. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451448 [article] Mechanism of tar generation during fluidized bed gasification and low temperature pyrolysis [texte imprimé] / Ute Wolfesberger-Schwabl, Auteur ; Isabella Aigner, Auteur ; Hermann Hofbauer, Auteur . - 2012 . - pp. 13001-13007. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13001-13007 Mots-clés : Pyrolysis  Low  temperature  Gasification  Fluidized  bed  Fluidization Résumé : This work focuses on the comparison of two different thermal conversion processes with respect to different tar amounts and tar compositions at different temperatures and process parameters. Steam gasification experiments were carried out in a 100 kW dual fluidized bed steam gasifier at a temperature range of 700 to 870 °C with straw and wood. Pyrolysis experiments were conducted in a rotary kiln reactor at temperatures between 600 and 630 °C and straw as fuel. For better understanding of tar formation during thermo-chemical conversion of biomass, the tar content and composition in the product gas were analyzed with a gas chromatograph coupled with a mass spectrometer. The main observation was that at higher temperatures the tar composition is shifted to higher molecular tars such as polyaromatic hydrocarbons (PAH). Key tar components at lower temperatures (pyrolysis) are phenols. The tar content and composition in the product gas of steam gasification of straw and wood as well as the tar yields and composition of low temperature pyrolysis of straw are presented in the following work. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451448