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Tuning and Control Loop Performance, Fourth Edition, 4th Edition by Gregory K. McMillan

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APPENDIX J

JACKET AND COIL TEMPERATURE CONTROL

The heating and cooling system is critical for reactors since temperature plays such a huge role in determining reaction rate and selectivity (formation of desired product). The limit to what a valve position controller (VPC) can do to increase production rate depends upon the capability of the heating and cooling system. The system can also be the source of discontinuities and nonlinearities. Most reactor temperature control problems beyond tuning can be traced back to defciencies in the reactor coil or jacket temperature system design.

Heating is required for endothermic reactions (reactions that consume energy), liquids that are being vaporized, or bringing a reactor up to operating temperature. ...

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