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Indexed by:期刊论文

Date of Publication:2009-06-16

Journal:COMPUTERS & CHEMICAL ENGINEERING

Included Journals:SCIE、EI

Volume:33

Issue:6

Page Number:1153-1168

ISSN No.:0098-1354

Key Words:Simultaneous optimization; Batch process schedules; Water-allocation network; Hybrid optimization strategy

Abstract:A systematic design methodology is developed in this work to optimize batch process schedules and water-allocation network in a simultaneous manner. The proposed model formulation and solution strategy are believed to be superior to the available ones in the following aspects. First, a continuous-time based time model is introduced and an improved state-space superstructure with SEN and STN representations is adopted to capture the structural characteristics of the integrated water-allocation network for batch process. Then, cost of splitters and mixers is added to reduce and evaluate the complexity of the network configuration. Finally, a hybrid optimization strategy integrating DICOPT and CA is developed for the resulting mixed-integer nonlinear programming (MINLP) model and, also, an interactive iteration method is adopted based on sensitivity analysis to guide the search toward a potential global optimum. Two illustrative examples are presented to demonstrate the validity and advantages of the proposed approach. (C) 2008 Elsevier Ltd. All rights reserved.