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Mechanism research on the development of ash deposits on the heating surface of biomass furnaces / Xuebin Wang in Industrial & engineering chemistry research, Vol. 51 N° 39 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 39 (Octobre 2012) . - pp 12984–12992 Titre : Mechanism research on the development of ash deposits on the heating surface of biomass furnaces Type de document : texte imprimé Auteurs : Xuebin Wang, Auteur ; Yuanyi Liu, Auteur ; Houzhang Tan, Auteur Année de publication : 2012 Article en page(s) : pp 12984–12992 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Biomass Résumé : Sulfate and chlorate are the key species contributing to the formation of ash deposits in a biomass furnace. In this paper, biomass combustion has been tested in a drop-tube furnace, and the ash deposits on a heating surface have been sampled. The physical and chemical characteristics of the deposits were analyzed using transmission electron microscopy in order to investigate the development of the ash deposits. The laboratory results have been compared with the ash deposit samples obtained from a biomass-fired power plant furnace. The results from both the laboratory and the plant samples indicate that most of the alkali chloride has been homogeneously converted into alkali sulfate in flue gas before deposition on the heating surface and that sulfate aerosols play a dominant role in the formation of biomass ash deposits. Finally, major pathways of alkali sulfation and the role of sulfate aerosols formed in the biomass-ash deposition are proposed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie302009m [article] Mechanism research on the development of ash deposits on the heating surface of biomass furnaces [texte imprimé] / Xuebin Wang, Auteur ; Yuanyi Liu, Auteur ; Houzhang Tan, Auteur . - 2012 . - pp 12984–12992. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 39 (Octobre 2012) . - pp 12984–12992 Mots-clés : Biomass Résumé : Sulfate and chlorate are the key species contributing to the formation of ash deposits in a biomass furnace. In this paper, biomass combustion has been tested in a drop-tube furnace, and the ash deposits on a heating surface have been sampled. The physical and chemical characteristics of the deposits were analyzed using transmission electron microscopy in order to investigate the development of the ash deposits. The laboratory results have been compared with the ash deposit samples obtained from a biomass-fired power plant furnace. The results from both the laboratory and the plant samples indicate that most of the alkali chloride has been homogeneously converted into alkali sulfate in flue gas before deposition on the heating surface and that sulfate aerosols play a dominant role in the formation of biomass ash deposits. Finally, major pathways of alkali sulfation and the role of sulfate aerosols formed in the biomass-ash deposition are proposed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie302009m