Internal configurations for a multi-product dividing wall column |
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Authors: | I.J. Halvorsen I. Dejanović S. Skogestad Ž. Olujić |
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Affiliation: | 1. SINTEF, ICT, Applied Cybernetics, 7465 Trondheim, Norway;2. University of Zagreb, Faculty of Chemical Engineering and Technology, 10000 Zagreb, Croatia;3. Norwegian University of Science and Technology, Department of Chemical Engineering, 7491 Trondheim, Norway;4. Delft University of Technology, Process & Energy Laboratory, 2628 CA Delft, The Netherlands |
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Abstract: | This paper addresses possibilities and peculiarities associated with establishing the most beneficial internal configuration of a complex dividing wall column (DWC), using as a base case the separation of a multicomponent aromatics mixture into four or five product streams. As expected, the Vmin-diagram method proved to be an appropriate tool in such a study, as a means for identifying and assessing promising configurations and at the same time to provide the necessary inputs and reliable initial guesses for detailed simulation-based determination of energy and stage requirements. A new, energy efficient two-top product configuration is introduced that appears to be an interesting option for a four-product DWC. |
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Keywords: | Distillation Energy saving Dividing wall column Multiple partition walls Multicomponent separation Vmin-diagram |
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