Title :
Control of distillation columns with non-monotonic temperature behavior
Author :
Zheng, Alex ; Grassi, Vince ; Meski, George
Author_Institution :
Dept. of Chem. Eng., Massachusetts Univ., Amherst, MA, USA
Abstract :
In this paper, we describe an unusual behavior which has been observed in the simulation of a practical extractive distillation column (tray) involving three components. Although the column temperature profile does not exhibit any temperature inversion, some tray temperatures, including the one used for control, are nonmonotonic with respect to input variables such as reboiler duty and entrainer flow. Its practical implication on temperature control is discussed
Keywords :
chemical technology; distillation; temperature control; column temperature profile; distillation tray; entrainer flow; extractive distillation column control; nonmonotonic temperature behavior; reboiler duty; temperature control; Chemical engineering; Chemical products; Distillation equipment; Feeds; Input variables; Kelvin; Pressure control; Steady-state; Temperature control;
Conference_Titel :
American Control Conference, 1997. Proceedings of the 1997
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-3832-4
DOI :
10.1109/ACC.1997.609175
