(147c) Best Practices in Column Control Distilled
AIChE Spring Meeting and Global Congress on Process Safety
2023
2023 Spring Meeting and 19th Global Congress on Process Safety
Topical 8: Kister Distillation Symposium
Kister Distillation Symposium 2023: New Insights into Distillation Control, Reboilers, and Condensers
Wednesday, March 15, 2023 - 2:35pm to 3:05pm
The authors recently combined efforts to cover distillation column control in a series of articles*. This presentation summarizes our views on what we believe represent best practices for distillation column control. Topics covered include selecting the regulatory control structure based on the given objectives and typical disturbances, selecting the best tray for temperature or soft sensor control, and when dual-ended composition control is warranted.
Also discussed are algorithm selection, PID tuning considerations, managing constraints, and when to consider Model Predictive Ccontrol (MPC). Guidance is also provided on the role of simulation and when to consider optimization.
Examples drawn from experience are provided to reinforce the recommendations.
*"Better Column Control Distilled – Part 1(-5)†in Control Talk, McMillan, G., Control Global, July (-December) 2022.
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