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The analysis of the history of structured packings allows the conclusion that the innovation cycle will become faster. Based on the separation power as an alternative way to represent the performance characteristics an estimate of the next level of what might be the ultimative separation power is given. Regarding the column internals as distributors, only slight improvements are expected, typically in the form of streamlined forms and cheaper manufacturing. CFD and computer tomography as tools to better understand the complicated two-phase flow processes in distillation equipment will be of great importance for the development of new designs. A general trend is the emerging of multifunctional packings and their application in combined systems, like catalytic distillation or dividing wall column. |
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