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Process Control: Modeling, Design, and Simulation by B. Wayne Bequette

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Chapter 15. Plantwide Control

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 ...

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