Documents disponibles écrits par cet auteur

An adaptive vapor recompression scheme for a ternary batch distillation with a side withdrawal / G. Uday Bhaskar Babu in Industrial & engineering chemistry research, Vol. 51 N° 13 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4990–4997 Titre : An adaptive vapor recompression scheme for a ternary batch distillation with a side withdrawal Type de document : texte imprimé Auteurs : G. Uday Bhaskar Babu, Auteur ; Etendra K. Pal, Auteur ; Amiya K. Jana, Auteur Année de publication : 2012 Article en page(s) : pp. 4990–4997 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Batch  distillation  Adaptive  vapor Résumé : Batch distillation is known to be less energy efficient than its continuous counterpart. However, it has received renewed interest last years owing to the flexibility it offers. In an effort to reduce energy consumption, a batch distillation with a side withdrawal (BDS) was proposed recently. In this contribution, we first construct the fundamental model for an unsteady state BDS process and simulate the column to derive an operational policy. Although the representative process was proved as an energy efficient scheme, in order to improve further the thermodynamic efficiency of the BDS structure, we propose an adaptive vapor recompression mechanism that considers the top vapor recompression with a variable speed. Apart from the compression ratio (CR), the other two manipulated variables involved are the external heat input to the reboiler through steam and the flow rate of overhead vapor entering the compressor. It is investigated that the two manipulated variables are required to adapt simultaneously throughout the batch operation; one is the CR and another one is either the heat input to the still or the overhead vapor rate. Finally, the influence of the adaptive vapor recompression scheme on the energetic and economic aspects is evaluated through intensive comparison against the conventional stand alone column. The proposed adaptive vapor recompression strategy appears overwhelmingly superior to its conventional counterpart in terms of thermal efficiency and economic performance. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201413p [article] An adaptive vapor recompression scheme for a ternary batch distillation with a side withdrawal [texte imprimé] / G. Uday Bhaskar Babu, Auteur ; Etendra K. Pal, Auteur ; Amiya K. Jana, Auteur . - 2012 . - pp. 4990–4997. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4990–4997 Mots-clés : Batch  distillation  Adaptive  vapor Résumé : Batch distillation is known to be less energy efficient than its continuous counterpart. However, it has received renewed interest last years owing to the flexibility it offers. In an effort to reduce energy consumption, a batch distillation with a side withdrawal (BDS) was proposed recently. In this contribution, we first construct the fundamental model for an unsteady state BDS process and simulate the column to derive an operational policy. Although the representative process was proved as an energy efficient scheme, in order to improve further the thermodynamic efficiency of the BDS structure, we propose an adaptive vapor recompression mechanism that considers the top vapor recompression with a variable speed. Apart from the compression ratio (CR), the other two manipulated variables involved are the external heat input to the reboiler through steam and the flow rate of overhead vapor entering the compressor. It is investigated that the two manipulated variables are required to adapt simultaneously throughout the batch operation; one is the CR and another one is either the heat input to the still or the overhead vapor rate. Finally, the influence of the adaptive vapor recompression scheme on the energetic and economic aspects is evaluated through intensive comparison against the conventional stand alone column. The proposed adaptive vapor recompression strategy appears overwhelmingly superior to its conventional counterpart in terms of thermal efficiency and economic performance. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201413p

Improving energy efficiency and cost-effectiveness of batch distillation for separating wide boiling constituents. 1. / Md. Malik Nawaz Khan in Industrial & engineering chemistry research, Vol. 51 N° 47 (Novembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 47 (Novembre 2012) . - pp. 15413–15422 Titre : Improving energy efficiency and cost-effectiveness of batch distillation for separating wide boiling constituents. 1. : Vapor Recompression Column Type de document : texte imprimé Auteurs : Md. Malik Nawaz Khan, Auteur ; G. Uday Bhaskar Babu, Auteur ; Amiya K. Jana, Auteur Année de publication : 2013 Article en page(s) : pp. 15413–15422 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Boiling  Distillation  Batchwise  Energetic  efficiency Résumé : Although the direct vapor recompression column (VRC) has been known for its application in continuous distillation since the 1960s, the research on vapor recompressed batch distillation (VRBD) started a couple of years ago. In this contribution, a batch splitter assisted by a heat pump of the vapor recompression type is investigated by rigorous method. When the VRC system is employed in batch processing, a variable manipulation procedure has to be adopted, leading to the adjustment of either the vapor inflow rate to the compressor by splitting the overhead vapor or the external heat input to the reboiler. The present work aims at exploring the operational and economical feasibility of the VRBD column for the fractionation of a mixture consisting of wide boiling components. By separating this binary mixture, it is quantitatively shown how closely the reversible batch operation can be approximated by using the direct compression of overhead vapor. To further strengthen the advantages of the VRC scheme over its conventional counterpart, a variable speed VRBD structure is proposed by introducing a variable speed compressor in the VRBD configuration aiming to run the column at a controlled compression ratio. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26679661 [article] Improving energy efficiency and cost-effectiveness of batch distillation for separating wide boiling constituents. 1. : Vapor Recompression Column [texte imprimé] / Md. Malik Nawaz Khan, Auteur ; G. Uday Bhaskar Babu, Auteur ; Amiya K. Jana, Auteur . - 2013 . - pp. 15413–15422. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 47 (Novembre 2012) . - pp. 15413–15422 Mots-clés : Boiling  Distillation  Batchwise  Energetic  efficiency Résumé : Although the direct vapor recompression column (VRC) has been known for its application in continuous distillation since the 1960s, the research on vapor recompressed batch distillation (VRBD) started a couple of years ago. In this contribution, a batch splitter assisted by a heat pump of the vapor recompression type is investigated by rigorous method. When the VRC system is employed in batch processing, a variable manipulation procedure has to be adopted, leading to the adjustment of either the vapor inflow rate to the compressor by splitting the overhead vapor or the external heat input to the reboiler. The present work aims at exploring the operational and economical feasibility of the VRBD column for the fractionation of a mixture consisting of wide boiling components. By separating this binary mixture, it is quantitatively shown how closely the reversible batch operation can be approximated by using the direct compression of overhead vapor. To further strengthen the advantages of the VRC scheme over its conventional counterpart, a variable speed VRBD structure is proposed by introducing a variable speed compressor in the VRBD configuration aiming to run the column at a controlled compression ratio. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26679661

A New Intensified Heat Integration in Distillation Column / Ajay Mane in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9534–9541 Titre : A New Intensified Heat Integration in Distillation Column Type de document : texte imprimé Auteurs : Ajay Mane, Auteur ; Amiya K. Jana, Auteur Année de publication : 2010 Article en page(s) : pp. 9534–9541 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Heat  distillation Résumé : In this contribution, a new intensified energy integration technique is introduced for the distillation column. The influence of the proposed intensified heat-integrated distillation column (int-HIDiC) scheme on the energetic and economic aspects is evaluated through intensive comparison against the heat-integrated distillation column (HIDiC) and the conventional stand-alone column. The HIDiC and the conventional distillation column (CDiC) are conceptually designed by the minimization of total annual cost (TAC). Here, two int-HIDiC structures are developed by introducing further thermal coupling between the overhead vapor of rectifying section and the bottom liquid of stripping section of the HIDiC scheme. This intensified energy integration approach reduces the steam consumption in the reboiler and avoids the use of a trim-condenser. For a binary distillation, it is observed that the proposed int-HIDiCs provide positive energy savings and better economic figures than the HIDiC and the conventional column. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100942p [article] A New Intensified Heat Integration in Distillation Column [texte imprimé] / Ajay Mane, Auteur ; Amiya K. Jana, Auteur . - 2010 . - pp. 9534–9541. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9534–9541 Mots-clés : Heat  distillation Résumé : In this contribution, a new intensified energy integration technique is introduced for the distillation column. The influence of the proposed intensified heat-integrated distillation column (int-HIDiC) scheme on the energetic and economic aspects is evaluated through intensive comparison against the heat-integrated distillation column (HIDiC) and the conventional stand-alone column. The HIDiC and the conventional distillation column (CDiC) are conceptually designed by the minimization of total annual cost (TAC). Here, two int-HIDiC structures are developed by introducing further thermal coupling between the overhead vapor of rectifying section and the bottom liquid of stripping section of the HIDiC scheme. This intensified energy integration approach reduces the steam consumption in the reboiler and avoids the use of a trim-condenser. For a binary distillation, it is observed that the proposed int-HIDiCs provide positive energy savings and better economic figures than the HIDiC and the conventional column. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100942p