An efficient and rigorous thermodynamic library and optimal-control of a cryogenic air separation unit

Jozsef Gaspar; Tobias Kasper Skovborg Ritschel; John Bagterp Jørgensen

doi:10.1016/B978-0-444-63965-3.50259-2

An efficient and rigorous thermodynamic library and optimal-control of a cryogenic air separation unit

Jozsef Gaspar, Tobias Kasper Skovborg Ritschel, John Bagterp Jørgensen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

Cryogenic air separation (CAS) is the leading technology for large scale production of pure N2, O2 and Ar. This process is very electric-energy intensive; thus it is a likely candidate for load balancing of power stations in a smart grid. This type of intermittent operation of CAS, requires a non-linear model based control to achieve optimal techno-economic performance. Accordingly, this work presents a computationally efficient and novel approach for solving a tray-by-tray equilibrium model and its implementation for open-loop optimal-control of a cryogenic distillation column. Here, the optimisation objective is to reduce the cost of compression in a volatile electricity market while meeting the production requirements, i.e. product flow rate and purity. This model is implemented in Matlab and uses the ThermoLib rigorous thermodynamic library. The present work represents a first step towards plant-wide dynamic modelling and smart control of a cryogenic distillation plant.

Original language	English
Title of host publication	Proceedings of the 27th European Symposium on Computer Aided Process Engineering – ESCAPE 27
Volume	40
Publisher	Elsevier
Publication date	2017
Pages	1543-1548
DOIs	https://doi.org/10.1016/B978-0-444-63965-3.50259-2
Publication status	Published - 2017
Event	27th European Symposium on Computer Aided Process Engineering - Barcelona, Spain Duration: 1 Oct 2017 → 5 Oct 2017 Conference number: 27 https://www.elsevier.com/books/27th-european-symposium-on-computer-aided-process-engineering/espuna/978-0-444-63965-3

Conference

Conference	27th European Symposium on Computer Aided Process Engineering
Number	27
Country/Territory	Spain
City	Barcelona
Period	01/10/2017 → 05/10/2017
Internet address	https://www.elsevier.com/books/27th-european-symposium-on-computer-aided-process-engineering/espuna/978-0-444-63965-3

Series	Computer Aided Chemical Engineering
Volume	40
ISSN	1570-7946

Keywords

Cryogenic air separation
Load balancing
Distillation column
Dynamic modeling
Optimal-control

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/B978-0-444-63965-3.50259-2

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Cite this

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title = "An efficient and rigorous thermodynamic library and optimal-control of a cryogenic air separation unit",

abstract = "Cryogenic air separation (CAS) is the leading technology for large scale production of pure N2, O2 and Ar. This process is very electric-energy intensive; thus it is a likely candidate for load balancing of power stations in a smart grid. This type of intermittent operation of CAS, requires a non-linear model based control to achieve optimal techno-economic performance. Accordingly, this work presents a computationally efficient and novel approach for solving a tray-by-tray equilibrium model and its implementation for open-loop optimal-control of a cryogenic distillation column. Here, the optimisation objective is to reduce the cost of compression in a volatile electricity market while meeting the production requirements, i.e. product flow rate and purity. This model is implemented in Matlab and uses the ThermoLib rigorous thermodynamic library. The present work represents a first step towards plant-wide dynamic modelling and smart control of a cryogenic distillation plant.",

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note = "27th European Symposium on Computer Aided Process Engineering, ESCAPE 27 ; Conference date: 01-10-2017 Through 05-10-2017",

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Gaspar, J, Ritschel, TKS & Jørgensen, JB 2017, An efficient and rigorous thermodynamic library and optimal-control of a cryogenic air separation unit. in Proceedings of the 27th European Symposium on Computer Aided Process Engineering – ESCAPE 27. vol. 40, Elsevier, Computer Aided Chemical Engineering, vol. 40, pp. 1543-1548, 27th European Symposium on Computer Aided Process Engineering, Barcelona, Spain, 01/10/2017. https://doi.org/10.1016/B978-0-444-63965-3.50259-2

An efficient and rigorous thermodynamic library and optimal-control of a cryogenic air separation unit. / Gaspar, Jozsef; Ritschel, Tobias Kasper Skovborg ; Jørgensen, John Bagterp.
Proceedings of the 27th European Symposium on Computer Aided Process Engineering – ESCAPE 27. Vol. 40 Elsevier, 2017. p. 1543-1548 (Computer Aided Chemical Engineering, Vol. 40).

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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N2 - Cryogenic air separation (CAS) is the leading technology for large scale production of pure N2, O2 and Ar. This process is very electric-energy intensive; thus it is a likely candidate for load balancing of power stations in a smart grid. This type of intermittent operation of CAS, requires a non-linear model based control to achieve optimal techno-economic performance. Accordingly, this work presents a computationally efficient and novel approach for solving a tray-by-tray equilibrium model and its implementation for open-loop optimal-control of a cryogenic distillation column. Here, the optimisation objective is to reduce the cost of compression in a volatile electricity market while meeting the production requirements, i.e. product flow rate and purity. This model is implemented in Matlab and uses the ThermoLib rigorous thermodynamic library. The present work represents a first step towards plant-wide dynamic modelling and smart control of a cryogenic distillation plant.

AB - Cryogenic air separation (CAS) is the leading technology for large scale production of pure N2, O2 and Ar. This process is very electric-energy intensive; thus it is a likely candidate for load balancing of power stations in a smart grid. This type of intermittent operation of CAS, requires a non-linear model based control to achieve optimal techno-economic performance. Accordingly, this work presents a computationally efficient and novel approach for solving a tray-by-tray equilibrium model and its implementation for open-loop optimal-control of a cryogenic distillation column. Here, the optimisation objective is to reduce the cost of compression in a volatile electricity market while meeting the production requirements, i.e. product flow rate and purity. This model is implemented in Matlab and uses the ThermoLib rigorous thermodynamic library. The present work represents a first step towards plant-wide dynamic modelling and smart control of a cryogenic distillation plant.

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ER -

An efficient and rigorous thermodynamic library and optimal-control of a cryogenic air separation unit

Abstract

Conference

Keywords

UN SDGs

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