Comparative Analysis of Different Control Strategies for a Train of Cryogenic 13C Separation Columns. Issue 4 (23rd February 2015)

• Record Type: Journal Article
• Authors: Muresan, Cristina I.; Dulf, Eva H.; Both, Roxana; Kristal, Jiri
• Is Part Of: Chemical engineering & technology. Volume 38:Issue 4(2015:Apr.)
• Page Start: 619
• Page End: 631
• Publication Date: 2015-02-23
• Subjects: Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201400550
• Languages: English
• ISSNs: 0930-7516

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Carbon isotopes are widely used in numerous industries, especially in medicine. The advantage of using ¹³C‐labeled products is only shadowed by the difficulty of increasing the natural concentration. One method available is a train of cryogenic distillation columns. This paper presents a preliminary analysis of three different control strategies for a unit comprising three 7‐m‐high isotope separation columns: a decentralized multivariable proportional‐integral controller and two decoupling control algorithms. For the first one, a single controller is designed for the entire distillation column train, whereas for the second decoupling approach, three separate controllers are designed for each of the three columns. Simulation results show that the last approach provides significantly improved results when compared to the other two control strategies.</p> </abstract>