Combustion characteristics of an Al/H2O mixture with polyoxyethylene / Yunlan Sun in Industrial & engineering chemistry research, Vol. 50 N° 24 (Décembre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 24 (Décembre 2011) . - pp. 14136–14141 Titre : Combustion characteristics of an Al/H2O mixture with polyoxyethylene Type de document : texte imprimé Auteurs : Yunlan Sun, Auteur ; Baozhong Zhu, Auteur Année de publication : 2012 Article en page(s) : pp. 14136–14141 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Combustion Polyoxyethylene Résumé : An experimental investigation of the combustion characteristics of an aluminum/water (Al/H2O) mixture with the addition of polyoxyethylene (PEO) was conducted in argon at 0.1 MPa. The burning rates were obtained using a constant-pressure strand burner. Ignition and combustion processes of an Al/H2O mixture were observed with a high-speed camera. The results show that PEO addition can improve the ignition and combustion performance of an Al/H2O mixture. The mixture of nanosized Al powder and H2O cannot be ignited in argon at 0.1 MPa, but the mixture of nanosized Al powder and H2O with the mass fraction 1% PEO or 3% PEO can be ignited, and the mixture can be self-sustaining combustion. The burning rates are 2.57 mm/s and 3.94 mm/s, respectively. In the mixture of nanosized Al powder and H2O with 3% PEO, the ignition can be sustained when 20% nanosized Al powder is replaced by micrometer-sized Al powder, and the burning rate is 3.36 mm/s. However, the mixture would not be ignited when 25% nanosized Al powder is replaced by micrometer-sized Al powder. In addition, the combustion process and flame image characteristics were obtained by using a high-speed photography technique, and the condensed combustion products were characterized by scanning electron microscopy combined with energy dispersive X-ray. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201837a [article] Combustion characteristics of an Al/H2O mixture with polyoxyethylene [texte imprimé] / Yunlan Sun, Auteur ; Baozhong Zhu, Auteur . - 2012 . - pp. 14136–14141. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 24 (Décembre 2011) . - pp. 14136–14141 Mots-clés : Combustion Polyoxyethylene Résumé : An experimental investigation of the combustion characteristics of an aluminum/water (Al/H2O) mixture with the addition of polyoxyethylene (PEO) was conducted in argon at 0.1 MPa. The burning rates were obtained using a constant-pressure strand burner. Ignition and combustion processes of an Al/H2O mixture were observed with a high-speed camera. The results show that PEO addition can improve the ignition and combustion performance of an Al/H2O mixture. The mixture of nanosized Al powder and H2O cannot be ignited in argon at 0.1 MPa, but the mixture of nanosized Al powder and H2O with the mass fraction 1% PEO or 3% PEO can be ignited, and the mixture can be self-sustaining combustion. The burning rates are 2.57 mm/s and 3.94 mm/s, respectively. In the mixture of nanosized Al powder and H2O with 3% PEO, the ignition can be sustained when 20% nanosized Al powder is replaced by micrometer-sized Al powder, and the burning rate is 3.36 mm/s. However, the mixture would not be ignited when 25% nanosized Al powder is replaced by micrometer-sized Al powder. In addition, the combustion process and flame image characteristics were obtained by using a high-speed photography technique, and the condensed combustion products were characterized by scanning electron microscopy combined with energy dispersive X-ray. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201837a

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