Documents disponibles écrits par cet auteur

A Graphical method of improving the production rate from batch reactors / David Ming in Industrial & engineering chemistry research, Vol. 51 N° 42 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 42 (Octobre 2012) . - pp. 13562-13573 Titre : A Graphical method of improving the production rate from batch reactors Type de document : texte imprimé Auteurs : David Ming, Auteur ; Diane Hildebrandt, Auteur ; David Glasser, Auteur Année de publication : 2012 Article en page(s) : pp. 13562-13573 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Reactor  Batchwise  Production Résumé : In this work, a graphical method of identifying opportunities for improving the production rate from batch reactors is presented. On the basis of this approach, a modification to the standard procedure of batch operation is also developed. It is found that by modifying the initial concentration of the batch, overall production performance may be improved. This may be achieved in practice by retaining a fraction of the final product volume and mixing with fresh feed material for the next batch cycle. This result is counterintuitive to the normal method of batch operation. Arguments demonstrating how the graphical method may be used to gain insight into alternative methods of operation are also briefly discussed. As such, the bypassing of feed may also be used to improve production rate for exit concentrations not associated with the optimal concentration. The graphical approach also allows optimization of batches where only experimental data are given. The method is demonstrated through several industrial examples and is successfully shown to improve over the standard method of batch operation. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26508179 [article] A Graphical method of improving the production rate from batch reactors [texte imprimé] / David Ming, Auteur ; Diane Hildebrandt, Auteur ; David Glasser, Auteur . - 2012 . - pp. 13562-13573. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 42 (Octobre 2012) . - pp. 13562-13573 Mots-clés : Reactor  Batchwise  Production Résumé : In this work, a graphical method of identifying opportunities for improving the production rate from batch reactors is presented. On the basis of this approach, a modification to the standard procedure of batch operation is also developed. It is found that by modifying the initial concentration of the batch, overall production performance may be improved. This may be achieved in practice by retaining a fraction of the final product volume and mixing with fresh feed material for the next batch cycle. This result is counterintuitive to the normal method of batch operation. Arguments demonstrating how the graphical method may be used to gain insight into alternative methods of operation are also briefly discussed. As such, the bypassing of feed may also be used to improve production rate for exit concentrations not associated with the optimal concentration. The graphical approach also allows optimization of batches where only experimental data are given. The method is demonstrated through several industrial examples and is successfully shown to improve over the standard method of batch operation. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26508179

A Revised method of attainable region construction utilizing rotated bounding hyperplanes / David Ming 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. 10549-10557 Titre : A Revised method of attainable region construction utilizing rotated bounding hyperplanes Type de document : texte imprimé Auteurs : David Ming, Auteur ; Diane Hildebrandt, Auteur ; David Glasser, Auteur Année de publication : 2011 Article en page(s) : pp. 10549-10557 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Hyperplane Résumé : An improved method of candidate attainable region (AR) construction, based on an existing bounding hyperplanes approach, is presented. The method uses a plane rotation about existing extreme points, rather than a plane translation, to eliminate unachievable regions from an initial bounding set. The algorithm is shown to be faster, but has currently only been implemented for two-dimensional constructions and has been extended to include the construction of candidate ARs that involve nonisothermal kinetics in concentration and concentration-time space. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23447947 [article] A Revised method of attainable region construction utilizing rotated bounding hyperplanes [texte imprimé] / David Ming, Auteur ; Diane Hildebrandt, Auteur ; David Glasser, Auteur . - 2011 . - pp. 10549-10557. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp. 10549-10557 Mots-clés : Hyperplane Résumé : An improved method of candidate attainable region (AR) construction, based on an existing bounding hyperplanes approach, is presented. The method uses a plane rotation about existing extreme points, rather than a plane translation, to eliminate unachievable regions from an initial bounding set. The algorithm is shown to be faster, but has currently only been implemented for two-dimensional constructions and has been extended to include the construction of candidate ARs that involve nonisothermal kinetics in concentration and concentration-time space. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23447947