A process engineer is concerned about more than the control of a single loop or multiple loops associated with a single-unit operation. Of real concern is the operation of the entire plant. After studying this chapter, the reader should be able to do the following:
Develop an appreciation for some of the complexities of plantwide control
Understand the control strategies associated with equipment/unit operations that are part of a typical chemical process plant
Understand the “snowball effect” and how to fix a stream flow in the recycle loop to avoid it
Understand that recycle can significantly change the process dynamics
Understand the control and optimization hierarchy—that important operation and control decisions ...