Documents disponibles écrits par cet auteur

Assessment of methanol synthesis utilizing exhaust CO2 for chemical storage of electrical energy / Liisa K. Rihko-Struckmann in Industrial & engineering chemistry research, Vol. 49 N° 21 (Novembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp. 11073–11078 Titre : Assessment of methanol synthesis utilizing exhaust CO2 for chemical storage of electrical energy Type de document : texte imprimé Auteurs : Liisa K. Rihko-Struckmann, Auteur ; Andreas Peschel, Auteur ; Richard Hanke-Rauschenbach, Auteur Année de publication : 2011 Article en page(s) : pp. 11073–11078 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Methanol  Electrical  energy Résumé : The thermodynamic and operational boundaries to store electrical energy chemically are evaluated in this contribution. Methanol is considered as a candidate for chemical energy storage. The production of methanol from exhaust CO2 could be one way to recyle CO2 and lower the global CO2 emissions. Energetic analysis reveals that exergy losses are most severe in the parts of the system when electrical energy is converted to chemical (electrolysis) and when chemical energy is converted to electrical (power generation). In methanol production, the exergetic efficiency is 83.1%, when the chemical exergy of hydrogen and methanol, the exergy of the power input and the released heat are taken into consideration. The exergetic efficiency of the overall energy conversion-storage system including methanol as storage medium was evaluated to be between 16.2 and 20.0% depending on the applied conversion technology. Methanol is suitable not only as stationary energy storage, but it could also be used as fuel for transportation. The energy storage system with hydrogen as storage medium shows higher exergetic efficiency than the methanol route. However, the storage of hydrogen is clearly more complex and cost-intensive. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100508w [article] Assessment of methanol synthesis utilizing exhaust CO2 for chemical storage of electrical energy [texte imprimé] / Liisa K. Rihko-Struckmann, Auteur ; Andreas Peschel, Auteur ; Richard Hanke-Rauschenbach, Auteur . - 2011 . - pp. 11073–11078. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp. 11073–11078 Mots-clés : Methanol  Electrical  energy Résumé : The thermodynamic and operational boundaries to store electrical energy chemically are evaluated in this contribution. Methanol is considered as a candidate for chemical energy storage. The production of methanol from exhaust CO2 could be one way to recyle CO2 and lower the global CO2 emissions. Energetic analysis reveals that exergy losses are most severe in the parts of the system when electrical energy is converted to chemical (electrolysis) and when chemical energy is converted to electrical (power generation). In methanol production, the exergetic efficiency is 83.1%, when the chemical exergy of hydrogen and methanol, the exergy of the power input and the released heat are taken into consideration. The exergetic efficiency of the overall energy conversion-storage system including methanol as storage medium was evaluated to be between 16.2 and 20.0% depending on the applied conversion technology. Methanol is suitable not only as stationary energy storage, but it could also be used as fuel for transportation. The energy storage system with hydrogen as storage medium shows higher exergetic efficiency than the methanol route. However, the storage of hydrogen is clearly more complex and cost-intensive. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100508w

Methodology for the design of optimal chemical reactors based on the concept of elementary process functions / Andreas Peschel in Industrial & engineering chemistry research, Vol. 49 N° 21 (Novembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp. 10535-10548 Titre : Methodology for the design of optimal chemical reactors based on the concept of elementary process functions Type de document : texte imprimé Auteurs : Andreas Peschel, Auteur ; Hannsjorg Freund, Auteur ; Kai Sundmacher, Auteur Année de publication : 2011 Article en page(s) : pp. 10535-10548 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Chemical  reactor  Optimal  design Résumé : In this contribution, a methodology for the optimal design of chemical reactors based on the best reaction route in the thermodynamic state space is proposed. This route is obtained by tracking a fluid element on its way through the reactor and manipulating the fluxes into this element. Instead of choosing the reactor design a priori and optimizing the free parameters of the chosen reactor setup, an innovative reactor design is developed based on the optimal flux profiles. Besides classical reactor concepts, this methodology is suited to investigate the potential of different process intensification options such as integration of reaction, cooling and separation in a single apparatus, or the application of high interface areas for heat and mass transfer. The methodology is exemplarily illustrated for the development of a new SO2 oxidation reactor. The residence time as an example for a meaningful objective is minimized, and a reduction of 69% compared to the optimized technical reference case is achieved. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23447946 [article] Methodology for the design of optimal chemical reactors based on the concept of elementary process functions [texte imprimé] / Andreas Peschel, Auteur ; Hannsjorg Freund, Auteur ; Kai Sundmacher, Auteur . - 2011 . - pp. 10535-10548. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp. 10535-10548 Mots-clés : Chemical  reactor  Optimal  design Résumé : In this contribution, a methodology for the optimal design of chemical reactors based on the best reaction route in the thermodynamic state space is proposed. This route is obtained by tracking a fluid element on its way through the reactor and manipulating the fluxes into this element. Instead of choosing the reactor design a priori and optimizing the free parameters of the chosen reactor setup, an innovative reactor design is developed based on the optimal flux profiles. Besides classical reactor concepts, this methodology is suited to investigate the potential of different process intensification options such as integration of reaction, cooling and separation in a single apparatus, or the application of high interface areas for heat and mass transfer. The methodology is exemplarily illustrated for the development of a new SO2 oxidation reactor. The residence time as an example for a meaningful objective is minimized, and a reduction of 69% compared to the optimized technical reference case is achieved. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23447946