Optimal Design of Air Separation Plants with Variable Electricity Pricing

Air separation processes are significant electricity consumers. Operating air separation units (ASUs) at variable capacity can be economically beneficial (in time varying electricity price scenarios) and can serve as a means for mitigating grid load during peak times. Process design should thus acco...

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Bibliographic Details
Published inComputer Aided Chemical Engineering Vol. 34; pp. 393 - 398
Main Authors Pattison, Richard C., Baldea, Michael
Format Book Chapter
LanguageEnglish
Published 2014
Subjects
Air Separation
Equation-Oriented Modeling
Flowsheet Optimization
Flowsheet Optimization
Air Separation
Equation-Oriented Modeling
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Summary:Air separation processes are significant electricity consumers. Operating air separation units (ASUs) at variable capacity can be economically beneficial (in time varying electricity price scenarios) and can serve as a means for mitigating grid load during peak times. Process design should thus account for such operational fluctuations. In this paper, we study the optimal design of ASUs assumed to be operating at variable capacity under variable electricity price. We introduce a novel pseudo-transient equation-oriented framework for process modelling, and use the developed models together with a time relaxation-based optimization algorithm to optimize the design of the plant subject to a time-of-day price scenario.
ISBN:9780444634337
0444634339
ISSN:1570-7946
DOI:10.1016/B978-0-444-63433-7.50050-X