Documents disponibles écrits par cet auteur

Biomass combustion with in situ CO2 capture with CaO. I. process description and economics / Juan Carlos Abanades in Industrial & engineering chemistry research, Vol. 50 N° 11 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 6972-6981 Titre : Biomass combustion with in situ CO2 capture with CaO. I. process description and economics Type de document : texte imprimé Auteurs : Juan Carlos Abanades, Auteur ; Monica Alonso, Auteur ; Nuria Rodriguez, Auteur Année de publication : 2011 Article en page(s) : pp. 6972-6981 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon  dioxide  In  situ  Combustion  Biomass Résumé : A novel concept is proposed to capture CO2 from biomass, burned in a circulating fluidized bed at a sufficiently low temperature (below 700 °C) to allow capture "in situ" by CaO. This step is followed by the calcination of CaCO3 in an interconnected oxy-fuel combustor that delivers a concentrated stream of CO2 suitable for permanent geological storage. A conceptual design and cost estimation exercise is presented and compared with other similar power plant schemes based on biomass and fossil fuels. A sensitivity analysis of the main cost variables reveals that the concept proposed is competitive against other low-carbon systems for lower values of Green Certificates and higher values of a carbon tax. The process could have long-term applications for large-scale biomass-fired systems and medium-term applications in helping large-scale power plants with CO2 capture and storage to meet the target of zero emissions by taking advantage of the negative emissions achieved from CO2 captured from biomass. A second part of this work (see the next article in this issue) demonstrates the concept in a 30 kW circulating fluidizedbed test facility. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199916 [article] Biomass combustion with in situ CO2 capture with CaO. I. process description and economics [texte imprimé] / Juan Carlos Abanades, Auteur ; Monica Alonso, Auteur ; Nuria Rodriguez, Auteur . - 2011 . - pp. 6972-6981. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 6972-6981 Mots-clés : Carbon  dioxide  In  situ  Combustion  Biomass Résumé : A novel concept is proposed to capture CO2 from biomass, burned in a circulating fluidized bed at a sufficiently low temperature (below 700 °C) to allow capture "in situ" by CaO. This step is followed by the calcination of CaCO3 in an interconnected oxy-fuel combustor that delivers a concentrated stream of CO2 suitable for permanent geological storage. A conceptual design and cost estimation exercise is presented and compared with other similar power plant schemes based on biomass and fossil fuels. A sensitivity analysis of the main cost variables reveals that the concept proposed is competitive against other low-carbon systems for lower values of Green Certificates and higher values of a carbon tax. The process could have long-term applications for large-scale biomass-fired systems and medium-term applications in helping large-scale power plants with CO2 capture and storage to meet the target of zero emissions by taking advantage of the negative emissions achieved from CO2 captured from biomass. A second part of this work (see the next article in this issue) demonstrates the concept in a 30 kW circulating fluidizedbed test facility. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199916

Modeling of the deactivation of CaO in a carbonate loop at high temperatures of calcination / Belén Gonzalez in Industrial & engineering chemistry research, Vol. 47 N° 23 (Décembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N° 23 (Décembre 2008) . - p. 9256–9262 Titre : Modeling of the deactivation of CaO in a carbonate loop at high temperatures of calcination Type de document : texte imprimé Auteurs : Belén Gonzalez, Auteur ; Gemma Grasa, Auteur ; Monica Alonso, Auteur Année de publication : 2009 Article en page(s) : p. 9256–9262 Note générale : Chemistry engineering Langues : Anglais (eng) Mots-clés : CaO  Carbonate  Loop  High  Temperatures  of  Calcination Résumé : Calcium oxide is being proposed as a regenerable sorbent for CO2 at high temperatures via a carbonation/calcination loop. It is well-known that natural sorbents lose their capacity to capture CO2 as the number of the carbonation/calcination cycles increases. The equations proposed in the literature to describe this decay are limited to moderate calcination temperatures (typically well below 950 °C). This work studies the effect of the calcination temperature and calcination time when the temperatures exceed 950 °C. Such high regeneration temperatures are necessary in some of the most efficient processes proposed, and they are shown to strongly affect sorbent performance. We propose a model to describe maximum sorbent conversion as a function of the number of cycles, the calcination temperature, and the calcination time. This model combines existing knowledge about the decay of sorbent activity under moderate calcination temperatures with the effect of sintering in each cycle. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8009318 [article] Modeling of the deactivation of CaO in a carbonate loop at high temperatures of calcination [texte imprimé] / Belén Gonzalez, Auteur ; Gemma Grasa, Auteur ; Monica Alonso, Auteur . - 2009 . - p. 9256–9262. Chemistry engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N° 23 (Décembre 2008) . - p. 9256–9262 Mots-clés : CaO  Carbonate  Loop  High  Temperatures  of  Calcination Résumé : Calcium oxide is being proposed as a regenerable sorbent for CO2 at high temperatures via a carbonation/calcination loop. It is well-known that natural sorbents lose their capacity to capture CO2 as the number of the carbonation/calcination cycles increases. The equations proposed in the literature to describe this decay are limited to moderate calcination temperatures (typically well below 950 °C). This work studies the effect of the calcination temperature and calcination time when the temperatures exceed 950 °C. Such high regeneration temperatures are necessary in some of the most efficient processes proposed, and they are shown to strongly affect sorbent performance. We propose a model to describe maximum sorbent conversion as a function of the number of cycles, the calcination temperature, and the calcination time. This model combines existing knowledge about the decay of sorbent activity under moderate calcination temperatures with the effect of sintering in each cycle. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8009318