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Theoretical evaluation of feedstock gasification using H2/C ratio and ROC as main input variables / Michael Stemmler in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9230–9237 Titre : Theoretical evaluation of feedstock gasification using H2/C ratio and ROC as main input variables Type de document : texte imprimé Auteurs : Michael Stemmler, Auteur ; Michael Muller, Auteur Année de publication : 2010 Article en page(s) : pp. 9230–9237 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Gasification  Thermochemical  process Résumé : Chemical equilibrium models for simulation of thermochemical processes such as feedstock gasification developed so far either focus on the determination of several producer gas compositions or include a parametric study of feedstock depending parameters such as relative fuel/air ratio (Frg) and moisture content of biomass (h). This article presents a thermochemical process model based on the H2/C ratio and relative oxygen content (ROC). Therefore, all oxygen-, hydrogen-, and carbon-containing components inside a gasifier are considered, and the model enables the prediction of feedstock behavior as well as an optimization of the feedstock gasification. Furthermore, producer gas compositions are determinable in a unique way as well as the achievable producer gas compositions deriving from several feedstocks combined with several gasifying agents (O2 and H2O). The calculated results show that the area of achievable producer gas compositions (AAPGC) derived from hard coal clearly exceeds the AAPGC derived from biomass. Whereas the AAPGC derived from lignite only exceeds the AAPGC derived from biomass for low H2/C ratios. The LHV of the producer gases decreases with increasing the H2/C ratio and ROC values. However, the resulting gas flow for the steam gasification is clearly higher compared to that of the oxygen gasification. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100726b [article] Theoretical evaluation of feedstock gasification using H2/C ratio and ROC as main input variables [texte imprimé] / Michael Stemmler, Auteur ; Michael Muller, Auteur . - 2010 . - pp. 9230–9237. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9230–9237 Mots-clés : Gasification  Thermochemical  process Résumé : Chemical equilibrium models for simulation of thermochemical processes such as feedstock gasification developed so far either focus on the determination of several producer gas compositions or include a parametric study of feedstock depending parameters such as relative fuel/air ratio (Frg) and moisture content of biomass (h). This article presents a thermochemical process model based on the H2/C ratio and relative oxygen content (ROC). Therefore, all oxygen-, hydrogen-, and carbon-containing components inside a gasifier are considered, and the model enables the prediction of feedstock behavior as well as an optimization of the feedstock gasification. Furthermore, producer gas compositions are determinable in a unique way as well as the achievable producer gas compositions deriving from several feedstocks combined with several gasifying agents (O2 and H2O). The calculated results show that the area of achievable producer gas compositions (AAPGC) derived from hard coal clearly exceeds the AAPGC derived from biomass. Whereas the AAPGC derived from lignite only exceeds the AAPGC derived from biomass for low H2/C ratios. The LHV of the producer gases decreases with increasing the H2/C ratio and ROC values. However, the resulting gas flow for the steam gasification is clearly higher compared to that of the oxygen gasification. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100726b