December 2015

Process Control/Instrumentation

Optimize alkylation unit operation by using response surface methods

A new methodology can be used to optimize the operations of an alkylation unit based on response surface methods.

A new methodology can be used to optimize the operations of an alkylation unit based on response surface methods. Trial-based process optimization requires the unit to be operated across a wide range of conditions. This approach tends to be opposed by refinery operations, as it can disrupt the normal operations of a process unit. Using the methods presented here, the general direction of process improvement is first identified using a first-order profit response surface built from available operating data. The performance of the unit is then evaluated at the refinery by making systematic changes to the key factors in the projected direction of process improvement. The operating results are t

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