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    Optimization and Control of Pressure Swing Adsorption Processes Under Uncertainty

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    Type
    Article
    Authors
    Khajuria, Harish
    Pistikopoulos, Efstratios N.
    Date
    2012-03-21
    Online Publication Date
    2012-03-21
    Print Publication Date
    2013-01
    Permanent link to this record
    http://hdl.handle.net/10754/599098
    
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    Abstract
    The real-time periodic performance of a pressure swing adsorption (PSA) system strongly depends on the choice of key decision variables and operational considerations such as processing steps and column pressure temporal profiles, making its design and operation a challenging task. This work presents a detailed optimization-based approach for simultaneously incorporating PSA design, operational, and control aspects under the effect of time variant and invariant disturbances. It is applied to a two-bed, six-step PSA system represented by a rigorous mathematical model, where the key optimization objective is to maximize the expected H2 recovery while achieving a closed loop product H2 purity of 99.99%, for separating 70% H2, 30% CH4 feed. The benefits over sequential design and control approach are shown in terms of closed-loop recovery improvement of more than 3%, while the incorporation of explicit/multiparametric model predictive controllers improves the closed loop performance. © 2012 American Institute of Chemical Engineers (AIChE).
    Citation
    Khajuria H, Pistikopoulos EN (2012) Optimization and Control of Pressure Swing Adsorption Processes Under Uncertainty. AIChE J 59: 120–131. Available: http://dx.doi.org/10.1002/aic.13783.
    Sponsors
    Financial support from the Royal Commission for the Exhibition of 1851, ParOS Ltd., EU project HY2SEPS (contract number: 019887), EPSRC (EP/G059071/1, EP/I014640/1), and KAUST is sincerely acknowledged. The authors also thank HY2SEPS for kindly providing the experimental data for the gas–solid system.
    Publisher
    Wiley
    Journal
    AIChE Journal
    DOI
    10.1002/aic.13783
    ae974a485f413a2113503eed53cd6c53
    10.1002/aic.13783
    Scopus Count
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