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Selecting Fractionators for Product Composition Control
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The benefits resulting from computer control of fractionators have been proven in many installations. These benefits include energy savings, increased throughput, higher recovery product upgrade and smoother operation. As a basis for understanding how these benefits are obtained, the foundations of distillation control are presented. A short explanation is included describing how the material and energy balances are decoupled, and why this decoupling is needed for best control. Criteria are presented for selecting those fractionators where installations of product composition control systems will result in energy savings. Suggestions are included for a preliminary screening of all fractionators and for detailed evaluation of the promising candidates. Examples are presented where minimum energy consumption is not the most efficient operation. The reasons are presented why these benefits cannot be achieved without computer control.
Griffin, D. E.; Anderson, J. E. (1979). Selecting Fractionators for Product Composition Control. Energy Systems Laboratory (http://esl.tamu.edu). Available electronically from