We have concluded this book with an example of a petroleum fractionator. The handling of petroleum cuts by studying boiling points has been reviewed. The control problem is to maintain the desired boiling point specifications.

The pipestill is a very complex column with multiple sidestreams, which come from stripping columns attached to the main column. In addition to the normal base and reflux drum levels and column pressures, the levels and pressures in these strippers must also be controlled.

I hope that the examples presented in this book have demonstrated the usefulness of simulation in the steady-state design and dynamic control of distillation columns. Working with distillation columns is challenging, important, and fun. Enjoy!

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