Abildskov, Jens

Bisgaard, Thomas

Huusom, Jakob Kjøbsted

Skogestad, Sigurd

A systematic control structure design method is applied on the concentric heat integrated distillation column (HIDiC) separating benzene and toluene. A degrees of freedom analysis is provided for identifying potential manipulated and controlled variables. Optimal operation is mapped and active constraints are identified for constructing the supervisory control layer. The fundamental problem of obtaining a stabilising control structure is addressed resulting in the regulatory control layer design. A supervisory control layer is devised and combined with the regulatory control layer. The control structure is finally evaluated by dynamic simulation for proving an acceptable performance. (C) 2016, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All right

Online Research Database In Technology

Optimal Operation and Stabilising Control of the Concentric Heat-Integrated Distillation Column

This paper presents the application of a systematic control configuration design procedure on the HIDiC with a reboiler. The application is illustrated through two case studies of industrial relevance, namely the separation of benzene/toluene and a multicomponent mixture of aromatic compounds. Results of static optimisations and dynamic simulations are presented based on a realistic column model, which accounts for dynamic pressure drops and liquid holdups, dynamic energy balances and more. Using a decentralised control scheme, good stabilising and economic performance are achieved by controlling both column section pressures and the temperature profile in one of the sections, while the economic variables are controlled by cascade control loops. Guidelines for the design of both the regulatory control layer and the supervisory control layer are provided

Optimal operation and stabilising control of the concentric heat-integrated distillation column (HIDiC)

http://orbit.dtu.dk/ws/files/126132475/1_s2.0_S2405896316304827_main.pdf

Optimal Operation and Stabilising Control of the Concentric Heat-Integrated Distillation Column

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Online Research Database In Technology

Online Research Database In Technology