Improved Analysis and Understanding of the Petlyuk Distillation Column
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چکیده
منابع مشابه
Control Performance of Thermally Coupled Distillation Sequences with Unidirectional Flows
The Petlyuk distillation system has been considered with special interest in the field of separation processes because of the high energy savings that it can provide with respect to the operation of sequences based on conventional columns. The original design of the Petlyuk structure, however, shows two interconnections that seem to affect its operational and controllability properties. For one...
متن کاملAnalysis of dynamic properties of alternative sequences to the Petlyuk column
The Petlyuk distillation configuration has received considerable attention because of its efficiency to reduce the energy required for the separation of ternary mixtures. The structure of the Petlyuk system offers some control challenges arising from the transfer of vapor streams back and forth between the columns. This means that neither of the columns can have a uniform lower nor higher press...
متن کاملEvaluation of self-optimising control structures for an integrated Petlyuk distillation column
In a Petlyuk distillation column, two extra degrees of freedom can be used for optimisation purposes. It has been reported that a typical energy saving of 30% is achievable with a Petlyuk distillation column, compared to conventional distillation arrangements. However, the optimal steadystate operation point can be difficult to maintain in practice. In this work we have studied the performance ...
متن کاملControl Properties of Alternative Schemes to The Petlyuk Distillation Configuration
The Petlyuk distillation system has received considerable attention because of the reported energy savings with respect to conventional sequences. The lack of widespread use of the Petlyuk system has been mainly attributed to potential control problems. Some of the control challenges result from the transfer of vapor streams back and forth between the columns. This means that neither of the two...
متن کاملOptimizing Control of Petlyuk Distillation: Understanding the Steady-State Behavior
The "Petlyuk" or "dividing-wall" or "fully thermally coupled" distillation column is an interesting alternative to the conventional cascaded binary columns for separation of multi-component mixtures. The industrial use has been very limited, and difficulties in control has been reported as one reason. Since we have more manipulated variables than controlled variables, the column is a candidate ...
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