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New MINLP model and modified outer approximation algorithm for distillation column synthesis
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DOI：10.1021/ie0711426.png)
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摘要
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A new, R-graph based, superstructure and corresponding MINLP model for designing conventional distillation columns are presented. A GDP representation (GR) of the superstructure is first constructed, then it is transformed to MINLP representation to which, in turn, additional trivial improvements are added. The new model has been tested on binary mixture examples, and the obtained results are compared to the results of an MINLP model which developed according to the GDP model of Yeomans and Grossmann.(9) The new model yields shorter computation time and provides better local optima. Additionally, the new model has been used for optimizing a complex multicomponent separation system consisting of several distillation columns. In order to handle such a complex system with a huge number of nonlinear equations, the outer approximation algorithm is modified to provide good initial values for the NLP subproblems.
Keyword:
PROCESS FLOWSHEET SUPERSTRUCTURES
DISJUNCTIVE PROGRAMMING-MODELS
OPTIMAL-DESIGN
STRUCTURAL MULTIPLICITY
ECONOMIC OPTIMIZATION
REPRESENTATIONS
FRAMEWORK
NUMBER
TRAYS
GDP
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期刊
I
IF:
3.9
论文数:
4.0W
被引数:
9.6W
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