Auslegung thermisch und stofflich gekoppelter Destillationskolonnen mittels Gesamtkostenoptimierung

Abstract

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Conceptual Design of Highly Integrated Processes – Optimization of Dividing Wall Columns

“…If a separation into the three products by means of distillation is feasible, the DDoF of the DWC have to be determined and optimized to evaluate the economic performance. While DWCs can be considered as an established technology, design and operation remain challenging , . Although shortcut and more detailed methods were proposed in literature and applied in practice for some time, suitable models are not readily available in commercial simulators like Aspen Plus® or Hysis®, ChemCad® or ProSim® , .…”

“…) , , . In order to account for the thermal coupling Wenzel and Röhm proposed the use of a Fortran‐based user module in Aspen Plus, which represents a tailored extension of the DSTWU model that accounts for the gas and liquid side products that are the recycle streams in Fig. c.…”

“…As demonstrated by Brüggemann and Marquardt , the minimum energy demand of thermally coupled configurations can efficiently be evaluated by means of the RBM, based on the reformulations proposed by Carlberg and Westerberg , . Instead of introducing the thermal coupling by means of side streams, like in the DSTWUm approach of Wenzel and Röhm , thermal coupling is considered by transferring the heat from the heat exchangers of the prefractionator to the subsequent columns utilizing a modification of the RBM . Considering an infinite number of equilibrium trays, which is the basic assumption of any pinch‐based shortcut, this is thermodynamically equivalent to the thermal coupling.…”

Ganzheitliche Optimierung eines industriellen Prozesses mit evolutionären Algorithmen

“…In den letzten 20 Jahren ist es mehr und mehr gelungen, Lösungsansätze für unterschiedlich komplexe Aufgabenstellungen zu entwickeln. Momentan ist in diesem Feld ein Übergang der entwickelten Lösungsansätze aus der universitären [1 ± 4] in die industrielle Anwendung zu beobachten [5,6].…”

Minimaler Energiebedarf von Trennwandkolonnen

“…Die Trennwandkolonne ist eine elegante Methode zur vollständigen Zerlegung eines ternären Gemischs durch Rektifikation [1,2]. Grundsätzlich steht die Trennwandkolonne hierbei in Konkurrenz zu zahlreichen anderen Kolonnensequenzen, wie z.…”