Importance of biomass particle size in structural evolution and reactivity of char in steam gasification / Mohammad Asadullah in Industrial & engineering chemistry research, Vol. 48 N° 22 (Novembre 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 9858–9863 Titre : Importance of biomass particle size in structural evolution and reactivity of char in steam gasification Type de document : texte imprimé Auteurs : Mohammad Asadullah, Auteur ; Shu Zhang, Auteur ; Zhenhua Min, Auteur Année de publication : 2010 Article en page(s) : pp. 9858–9863 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Chars Combustion reactivity Alkali and alkaline earth metallic Résumé : An Australian mallee wood of different particle sizes was gasified in steam in a fluidized-bed reactor at different temperatures. The structural features of chars, combustion reactivity of chars, and alkali and alkaline earth metallic (AAEM) species retention in chars were investigated in view to elucidate how the particle size affects the carbon conversion during steam gasification of biomass. The structural features and combustion reactivity of chars were investigated using Raman spectroscopy and thermogravimetric anlysis, respectively. The Raman intensity and combustion reactivity of chars were seen to decrease with increasing temperature. However, the combustion reactivity of char increased with increasing biomass particle size in the bigger particle range (1.5−5.18 mm). This is due mainly to the increase of catalytic species (AAEM) retention in chars. The increased AAEM retention and condensation of aromatic ring systems are a result of increasing mass transfer resistance in bigger particles of biomass. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901214z [article] Importance of biomass particle size in structural evolution and reactivity of char in steam gasification [texte imprimé] / Mohammad Asadullah, Auteur ; Shu Zhang, Auteur ; Zhenhua Min, Auteur . - 2010 . - pp. 9858–9863. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 9858–9863 Mots-clés : Chars Combustion reactivity Alkali and alkaline earth metallic Résumé : An Australian mallee wood of different particle sizes was gasified in steam in a fluidized-bed reactor at different temperatures. The structural features of chars, combustion reactivity of chars, and alkali and alkaline earth metallic (AAEM) species retention in chars were investigated in view to elucidate how the particle size affects the carbon conversion during steam gasification of biomass. The structural features and combustion reactivity of chars were investigated using Raman spectroscopy and thermogravimetric anlysis, respectively. The Raman intensity and combustion reactivity of chars were seen to decrease with increasing temperature. However, the combustion reactivity of char increased with increasing biomass particle size in the bigger particle range (1.5−5.18 mm). This is due mainly to the increase of catalytic species (AAEM) retention in chars. The increased AAEM retention and condensation of aromatic ring systems are a result of increasing mass transfer resistance in bigger particles of biomass. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901214z

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire