Process Dynamics and Control

The column (C-3) delivers cydohexanol as top and a phenol/cyclohexanol mixture to be recycled as bottoms. The column is designed to ensure bottoms as close as possible to the azeotrope phenol/cyclohexanol, while minimizing losses in cyclohexanone. This column has 30 theoretical stages and operates at moderate reflux, below 3 1, which leads to diameters of 2.5/1.8m. 

---

F. Greg Shinskey/ B.S.Ch.E./ Consultant (retiredfrom Eoxboro Co.), North Sandwich, NH. (Fundamentals of Process Dynamics and Control, Unit Operations Control)... 

The PI controller is by far the most commonly used controller in the process industries. The summation of the deviation with its integral in the above equation can be interpreted in terms of frequency response of the controller (Seborg, Edgar, and Melhchamp, Process Dynamics and Control, Wiley, New York, 1989). The PI controller produces a phase lag between zero and 90 degrees ... 

Wankat, P. C. (1990) Rate Controlled Separations, Elsevier Applied Science. Weber, T. W. (1978) An Introduction to Process Dynamics and Control, Wiley-Interscience. 

See Ogunnaike, Babatunde A., and W. Harmon Ray, Process Dynamics, Modeling, and Control, Oxford University Press (1994) Seborg, D., T. F. Edgar, and D. A. Mellichamp, Process Dynamics and Control, 2d ed., Wiley, New York (2003). The z-transform is useful when data is available at only discrete points. Let... 

He has published over 200 papers in the fields of process control, optimization, and mathematical modeling of processes such as separations, combustion, and microelectronics processing. He is coauthor of Process Dynamics and Control, published by Wiley in 1989. Dr. Edgar was chairman of the CAST Division of AIChE in 1986, president of the CACHE Corporation from 1981 to 1984, and president of AIChE in 1997. 

Douglas, J.M. (1972) Process Dynamics and Control, Vols. 1 and 2, Prentice Hall. 

This chapter is an introduction to process dynamics and control for those students who have had little or no contact or experience with real chemical engineering processes. The objective is to illustrate where process control fits into the picture and to indicate its relative importance in the operation, design, and development of a chemical engineering plant. 

Probably the best way to illustrate what we mean by process dynamics and control is to take a few real examples. The first example describes a simple process where dynamic response, the time-dependent behavior, is important. The second example illustrates the use of a single feedback controller. The third example discusses a simple but reasonably typical chemical engineering plant and its conventional control system involving several controllers. 

In the study of process dynamics and control we will use several languages. 

Weber, Thomas W. "An Introduction to Process Dynamics and Control", John Wiley Sons, New York, New York, 1973. 

General References Shinskey, Process Control Systems, 4th ed., McGraw-Hill, New York, 1996 Seborg, Edgar, and Mellichamp, Process Dynamics and Control, Wiley, New York, 1989. 

---