Supercritical fluid recycle for surge control of CO2 centrifugal compressors
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Accepted version
Published version
Author(s)
Budinis, S
Thornhill, NF
Type
Journal Article
Abstract
This paper presents computer-based design and analysis of control systems for centrifugal compressors when the operating fluid is supercritical CO2.
It reports a non-linear dynamic model including a main forward compression line and two different configurations for the recycle antisurge line. Disturbance scenarios are proposed for testing the configurations and performance indicators are suggested to evaluate control performance and power consumption of the compression system.
The paper demonstrates that compared to the hot recycle, the process configuration including a cold gas recycle has better overall stability, but higher power consumption and lower values for the control performance indicators. Based on the previous considerations, the paper gives suggestions regarding the choice of the recycle configuration. Moreover it compares subcritical and supercritical compression during surge prevention and highlights the importance of the selection of the gas recycle configuration when full recycle is needed.
It reports a non-linear dynamic model including a main forward compression line and two different configurations for the recycle antisurge line. Disturbance scenarios are proposed for testing the configurations and performance indicators are suggested to evaluate control performance and power consumption of the compression system.
The paper demonstrates that compared to the hot recycle, the process configuration including a cold gas recycle has better overall stability, but higher power consumption and lower values for the control performance indicators. Based on the previous considerations, the paper gives suggestions regarding the choice of the recycle configuration. Moreover it compares subcritical and supercritical compression during surge prevention and highlights the importance of the selection of the gas recycle configuration when full recycle is needed.
Date Issued
2016-03-17
Date Acceptance
2016-03-15
Citation
Computers & Chemical Engineering, 2016, 91, pp.329-342
ISSN
0098-1354
Publisher
Elsevier
Start Page
329
End Page
342
Journal / Book Title
Computers & Chemical Engineering
Volume
91
Copyright Statement
© 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license(http://creativecommons.org/licenses/by/4.0/)
License URL
Sponsor
Engineering & Physical Science Research Council (E
Grant Number
EP/J020788/1, ERI 023327
Subjects
Chemical Engineering
0904 Chemical Engineering
0913 Mechanical Engineering
Publication Status
Published
Date Publish Online
2016-03-17