Documents disponibles écrits par cet auteur

A high temperature lithium orthosilicate - based solid absorbent for post combustion CO2 capture / Robert Quinn in Industrial & engineering chemistry research, Vol. 51 N° 27 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 27 (Juillet 2012) . - pp. 9320-9327 Titre : A high temperature lithium orthosilicate - based solid absorbent for post combustion CO2 capture Type de document : texte imprimé Auteurs : Robert Quinn, Auteur ; Ronald J. Kitzhoffer, Auteur ; Jeffrey R. Hufton, Auteur Année de publication : 2012 Article en page(s) : pp. 9320-9327 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Carbon  dioxide  Combustion  Absorbent Résumé : Capture of carbon dioxide from combustion processes presents a unique and challenging technical problem arising from low CO2 partial pressures, high flow rates, and the presence of water vapor and reactive contaminants such as SO2. A series of solid sorbents were evaluated to determine suitability for postcombustion capture. A lithium orthosilicate (Li4SiO4)-based absorbent supplied by Toshiba Corporation was found to have the most promising properties. The absorbent reacts chemically with CO2 at elevated temperatures (550 °C) to form lithium carbonate (Li2CO3) and lithium metasilicate (Li2SiO3). The presence of water vapor was shown to greatly enhance CO2 absorption rates without affecting capacity. Breakthrough capacities of ∼5―6 mmol/g (22-26 wt %) were obtained using a "clean" synthetic flue gas containing 15% CO2 and 10% H2O in N2 at 550 °C. Experimental studies showed that the absorbent used in a fixed bed process will likely require a thermal swing process with absorption at 550 °C and regeneration at 650 °C. Even for the high capacity of the Li4SiO4-based absorbent, an alternative to conventional fixed bed technology will be required for practical postcombustion capture from coal-fired power plants. Processes that can shorten cycle times by rapidly heating and cooling vessels and/or sorbents will be needed, and possible alternatives are described. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26132268 [article] A high temperature lithium orthosilicate - based solid absorbent for post combustion CO2 capture [texte imprimé] / Robert Quinn, Auteur ; Ronald J. Kitzhoffer, Auteur ; Jeffrey R. Hufton, Auteur . - 2012 . - pp. 9320-9327. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 27 (Juillet 2012) . - pp. 9320-9327 Mots-clés : Carbon  dioxide  Combustion  Absorbent Résumé : Capture of carbon dioxide from combustion processes presents a unique and challenging technical problem arising from low CO2 partial pressures, high flow rates, and the presence of water vapor and reactive contaminants such as SO2. A series of solid sorbents were evaluated to determine suitability for postcombustion capture. A lithium orthosilicate (Li4SiO4)-based absorbent supplied by Toshiba Corporation was found to have the most promising properties. The absorbent reacts chemically with CO2 at elevated temperatures (550 °C) to form lithium carbonate (Li2CO3) and lithium metasilicate (Li2SiO3). The presence of water vapor was shown to greatly enhance CO2 absorption rates without affecting capacity. Breakthrough capacities of ∼5―6 mmol/g (22-26 wt %) were obtained using a "clean" synthetic flue gas containing 15% CO2 and 10% H2O in N2 at 550 °C. Experimental studies showed that the absorbent used in a fixed bed process will likely require a thermal swing process with absorption at 550 °C and regeneration at 650 °C. Even for the high capacity of the Li4SiO4-based absorbent, an alternative to conventional fixed bed technology will be required for practical postcombustion capture from coal-fired power plants. Processes that can shorten cycle times by rapidly heating and cooling vessels and/or sorbents will be needed, and possible alternatives are described. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26132268

Liquid-phase guard bed for removal of synthesis gas contaminants / Robert Quinn in Industrial & engineering chemistry research, Vol. 47 N°18 (Septembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°18 (Septembre 2008) . - p. 7027–7030 Titre : Liquid-phase guard bed for removal of synthesis gas contaminants Type de document : texte imprimé Auteurs : Robert Quinn, Auteur ; Bernard A. Toseland, Auteur Année de publication : 2008 Article en page(s) : p. 7027–7030 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Guard  bed  Methanol  synthesis Résumé : This article describes a single guard bed that is effective for the removal of all poisons from a methanol synthesis process. The guard bed consists of a methanol synthesis catalyst suspended in a nonreactive liquid (a liquid-phase guard bed). The key to making the guard bed universal is operating the guard bed at a temperature below the operating temperature of the reactor but at a sufficiently high temperature and residence time to allow achievement of equilibrium with the incoming gas. The successful use of this guard bed is demonstrated for several catalyst poisons. In addition, the use of spent catalyst for the guard bed is demonstrated. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8003418 [article] Liquid-phase guard bed for removal of synthesis gas contaminants [texte imprimé] / Robert Quinn, Auteur ; Bernard A. Toseland, Auteur . - 2008 . - p. 7027–7030. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°18 (Septembre 2008) . - p. 7027–7030 Mots-clés : Guard  bed  Methanol  synthesis Résumé : This article describes a single guard bed that is effective for the removal of all poisons from a methanol synthesis process. The guard bed consists of a methanol synthesis catalyst suspended in a nonreactive liquid (a liquid-phase guard bed). The key to making the guard bed universal is operating the guard bed at a temperature below the operating temperature of the reactor but at a sufficiently high temperature and residence time to allow achievement of equilibrium with the incoming gas. The successful use of this guard bed is demonstrated for several catalyst poisons. In addition, the use of spent catalyst for the guard bed is demonstrated. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8003418