Control assessment for heat integrated systems. An industrial case study for ethanol recovery

Publication: Research - peer-reviewJournal article – Annual report year: 2013

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@article{d1f0b2444bc94715ba4af90ed78967d3,
title = "Control assessment for heat integrated systems. An industrial case study for ethanol recovery",
keywords = "Heat integration, Distillation, Controllability, Decentralized control, Model predictive control",
publisher = "Elsevier BV",
author = "{Mauricio Iglesias}, Miguel and Huusom, {Jakob Kjøbsted} and Gürkan Sin",
note = "Special issue: Hybrid and Reactive Separations",
year = "2013",
doi = "10.1016/j.cep.2012.11.003",
volume = "67",
pages = "60– 70",
journal = "Chemical Engineering and Processing",
issn = "0255-2701",

}

RIS

TY - JOUR

T1 - Control assessment for heat integrated systems. An industrial case study for ethanol recovery

A1 - Mauricio Iglesias,Miguel

A1 - Huusom,Jakob Kjøbsted

A1 - Sin,Gürkan

AU - Mauricio Iglesias,Miguel

AU - Huusom,Jakob Kjøbsted

AU - Sin,Gürkan

PB - Elsevier BV

PY - 2013

Y1 - 2013

N2 - Heat integration is essential for reducing the energy consumption of process industries. However, it may render the dynamic operation more interactive and difficult to control. This paper assesses the implications of heat integration in controllability and performance in energy reduction. The assessment, both on open loop and closed loop, was carried out based on an industrial case study and compared to a modified case without heat integration. Although the heat integrated system displayed a certain deterioration of controllability, the control system made possible an efficient operation. To this goal, different control systems were tested, from a decentralized control system to a model predictive controller. The type of controller used in the process barely influenced the performance of the process since the aim was exclusively to ensure the regulation of the process to fixed setpoints. The reduction of energy consumption achieved thanks to heat integration was considerably larger than the losses due to poor control of the process, confirming the importance of heat integration in energy intensive processes.

AB - Heat integration is essential for reducing the energy consumption of process industries. However, it may render the dynamic operation more interactive and difficult to control. This paper assesses the implications of heat integration in controllability and performance in energy reduction. The assessment, both on open loop and closed loop, was carried out based on an industrial case study and compared to a modified case without heat integration. Although the heat integrated system displayed a certain deterioration of controllability, the control system made possible an efficient operation. To this goal, different control systems were tested, from a decentralized control system to a model predictive controller. The type of controller used in the process barely influenced the performance of the process since the aim was exclusively to ensure the regulation of the process to fixed setpoints. The reduction of energy consumption achieved thanks to heat integration was considerably larger than the losses due to poor control of the process, confirming the importance of heat integration in energy intensive processes.

KW - Heat integration

KW - Distillation

KW - Controllability

KW - Decentralized control

KW - Model predictive control

U2 - 10.1016/j.cep.2012.11.003

DO - 10.1016/j.cep.2012.11.003

JO - Chemical Engineering and Processing

JF - Chemical Engineering and Processing

SN - 0255-2701

VL - 67

SP - 60

EP - 70

ER -