Documents disponibles écrits par cet auteur

Flowrate targeting algorithm for interplant resource conservation network. Part 1 / Irene M. L. Chew in Industrial & engineering chemistry research, Vol. 49 N° 14 (Juillet 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp 6439–6455 Titre : Flowrate targeting algorithm for interplant resource conservation network. Part 1 : unassisted integration scheme Type de document : texte imprimé Auteurs : Irene M. L. Chew, Auteur ; Dominic C. Y. Foo, Auteur ; Denny K. S. Ng, Auteur Année de publication : 2010 Article en page(s) : pp 6439–6455 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Algorithm  Resource  conservation  network Résumé : This paper is part 1 of a series describing a new algorithm for targeting minimum fresh resource and waste flow rates for an interplant resource conservation network (IPRCN). The IPRCN enables the reuse of the excess process sources among different networks, which reduces the consumption of fresh resource and generation of waste simultaneously. Four hypothetical examples are presented to illustrate both concentration- and property-based utility gas and water integration problems. In addition, the proposed targeting algorithm is adapted in the synthesis of total resource network, where the minimum regeneration and waste treatment flow rates can be targeted prior to the detailed design of an IPRCN. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901802m [article] Flowrate targeting algorithm for interplant resource conservation network. Part 1 : unassisted integration scheme [texte imprimé] / Irene M. L. Chew, Auteur ; Dominic C. Y. Foo, Auteur ; Denny K. S. Ng, Auteur . - 2010 . - pp 6439–6455. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp 6439–6455 Mots-clés : Algorithm  Resource  conservation  network Résumé : This paper is part 1 of a series describing a new algorithm for targeting minimum fresh resource and waste flow rates for an interplant resource conservation network (IPRCN). The IPRCN enables the reuse of the excess process sources among different networks, which reduces the consumption of fresh resource and generation of waste simultaneously. Four hypothetical examples are presented to illustrate both concentration- and property-based utility gas and water integration problems. In addition, the proposed targeting algorithm is adapted in the synthesis of total resource network, where the minimum regeneration and waste treatment flow rates can be targeted prior to the detailed design of an IPRCN. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901802m

Flowrate targeting algorithm for interplant resource conservation network. Part 2 / Irene M. L. Chew in Industrial & engineering chemistry research, Vol. 49 N° 14 (Juillet 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp. 6456–6468 Titre : Flowrate targeting algorithm for interplant resource conservation network. Part 2 : assisted integration scheme Type de document : texte imprimé Auteurs : Irene M. L. Chew, Auteur ; Dominic C. Y. Foo, Auteur ; Raymond R. Tan, Auteur Année de publication : 2010 Article en page(s) : pp. 6456–6468 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Algorithm  Resource  conservation  network Résumé : Part 1 of the series (Chew, I. M. L.; Foo, D. C. Y.; Ng, D. K. S.; Tan, R. R. Flowrate Targeting Algorithm for Interplant Resource Conservation Network. Part 1: Unassisted Integration Scheme. Ind. Eng. Chem. Res. DOI: 10.1021/ie901802m.) proposes a systematic three-step targeting algorithm for unassisted integration scheme for interplant resource conservation network (IPRCN), where cross-plant streams within the pinch region can be used to achieve minimum resource flow rate targets. However, the unassisted scheme does not hold true for all cases. Part 2 of the series explores additional material recovery to be realized by sending cross-plant streams outside the pinch region. This is known as the assisted integration scheme. Appropriate identification of waste streams as the cross-plant streams is an important step in locating the minimum flow rate targets for these cases. The effect of pinch shifting and the generation of new waste streams are also investigated. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901804z [article] Flowrate targeting algorithm for interplant resource conservation network. Part 2 : assisted integration scheme [texte imprimé] / Irene M. L. Chew, Auteur ; Dominic C. Y. Foo, Auteur ; Raymond R. Tan, Auteur . - 2010 . - pp. 6456–6468. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 14 (Juillet 2010) . - pp. 6456–6468 Mots-clés : Algorithm  Resource  conservation  network Résumé : Part 1 of the series (Chew, I. M. L.; Foo, D. C. Y.; Ng, D. K. S.; Tan, R. R. Flowrate Targeting Algorithm for Interplant Resource Conservation Network. Part 1: Unassisted Integration Scheme. Ind. Eng. Chem. Res. DOI: 10.1021/ie901802m.) proposes a systematic three-step targeting algorithm for unassisted integration scheme for interplant resource conservation network (IPRCN), where cross-plant streams within the pinch region can be used to achieve minimum resource flow rate targets. However, the unassisted scheme does not hold true for all cases. Part 2 of the series explores additional material recovery to be realized by sending cross-plant streams outside the pinch region. This is known as the assisted integration scheme. Appropriate identification of waste streams as the cross-plant streams is an important step in locating the minimum flow rate targets for these cases. The effect of pinch shifting and the generation of new waste streams are also investigated. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901804z

A superstructure optimization approach for membrane separation - based water regeneration network synthesis with detailed nonlinear mechanistic reverse osmosis model / Cheng Seong Khor in Industrial & engineering chemistry research, Vol. 50 N° 23 (Décembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13444-13456 Titre : A superstructure optimization approach for membrane separation - based water regeneration network synthesis with detailed nonlinear mechanistic reverse osmosis model Type de document : texte imprimé Auteurs : Cheng Seong Khor, Auteur ; Dominic C. Y. Foo, Auteur ; Mahmoud M. El-Halwagi, Auteur Année de publication : 2012 Article en page(s) : pp. 13444-13456 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Modeling  Reverse  osmosis  Membrane  separation  Optimization  Superstructure Résumé : Scarcity of freshwater resources and increasingly stringent environmental regulations on industrial effluents have motivated the process industry to identify and develop various water recovery strategies. This work proposes the use of detailed model representation for water regeneration network synthesis, in which nonlinear mechanistic models of the regeneration units are embedded within an overall mixed-integer nonlinear programming (MINLP) optimization framework. The superstructure-based MINLP framework involves both continuous variables for water flow rates and contaminant concentrations and 0―1 variables for selection ofpiping interconnections. The nonlinear regeneration model produces a rigorous cost-based relation, instead of a "black box" model, that is incorporated within the overall MINLP representing a network of numerous water sources and water sinks. Hence, such an approach enables a simultaneous evaluation of both direct water reuse/recycle and regeneration-reuse/recycle opportunities. To demonstrate the proposed approach, an industrial case study is illustrated that incorporates a mechanistic model of reverse osmosis network (RON) for water regeneration for an operating refinery in Malaysia. The results indicate a potential of 58% savings in freshwater use. The capital investment for the water regeneration network is reported as $8,960,000 with a payback period of 2.1 years, thus providing economic support to pursue the RON retrofit option. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267503 [article] A superstructure optimization approach for membrane separation - based water regeneration network synthesis with detailed nonlinear mechanistic reverse osmosis model [texte imprimé] / Cheng Seong Khor, Auteur ; Dominic C. Y. Foo, Auteur ; Mahmoud M. El-Halwagi, Auteur . - 2012 . - pp. 13444-13456. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13444-13456 Mots-clés : Modeling  Reverse  osmosis  Membrane  separation  Optimization  Superstructure Résumé : Scarcity of freshwater resources and increasingly stringent environmental regulations on industrial effluents have motivated the process industry to identify and develop various water recovery strategies. This work proposes the use of detailed model representation for water regeneration network synthesis, in which nonlinear mechanistic models of the regeneration units are embedded within an overall mixed-integer nonlinear programming (MINLP) optimization framework. The superstructure-based MINLP framework involves both continuous variables for water flow rates and contaminant concentrations and 0―1 variables for selection ofpiping interconnections. The nonlinear regeneration model produces a rigorous cost-based relation, instead of a "black box" model, that is incorporated within the overall MINLP representing a network of numerous water sources and water sinks. Hence, such an approach enables a simultaneous evaluation of both direct water reuse/recycle and regeneration-reuse/recycle opportunities. To demonstrate the proposed approach, an industrial case study is illustrated that incorporates a mechanistic model of reverse osmosis network (RON) for water regeneration for an operating refinery in Malaysia. The results indicate a potential of 58% savings in freshwater use. The capital investment for the water regeneration network is reported as $8,960,000 with a payback period of 2.1 years, thus providing economic support to pursue the RON retrofit option. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267503