473008 Energy Consumption Minimization in Multi-Pressure Reactive Distillation Networks

Tuesday, November 15, 2016
Grand Ballroom B (Hilton San Francisco Union Square)
Flavio da Cruz, UCLA Chemical and Biomolecular Engineering Department, University of California, Los Angeles, Los Angeles, CA and Vasilios Manousiouthakis, Chemical & Biomolecular Engineering Department,, University of California Los Angeles, Los Angeles, Los Angeles, CA

Energy consumed by a multi-pressure reactive distillation network involving a ternary azeotropic mixture is investigated in this work. In the synthesis of reactive distillation networks, a promising process intensification technology, different pressure levels are allowed to be used to overcome the azeotropes, which can enhance the separation process. For the multi-pressure reactive distillation of methanol/isobutene/MTBE azeotropic system, a previous work showed that, for the same purity target, when the reactive holdup is reduced, the total flow at the network increases, which impacts the overall energy needs of the network. A methodology for the globally optimal synthesis of a reactive distillation network with minimum energy consumption, under certain conditions, is presented. The proposed methodology employs the Infinite DimEnsionAl State-Space (IDEAS) conceptual framework, which is shown to be applicable to the problem under consideration. The IDEAS framework considers an infinite number of units with all physically possible mixing and splitting streams existing between them. The resulting mathematical formulation is an infinite-dimensional program (ILP). The method is demonstrated on a case study involving the multi pressure reactive distillation of methanol/isobutene/MTBE azeotropic mixture.

Extended Abstract: File Not Uploaded
See more of this Session: Poster Session: Separations Division
See more of this Group/Topical: Separations Division