||A MILP Transshipment Model to Integrate and Re-Engineer Distillation Columns into Overall Processes
Book, Conference Paper
|| Pyrgakis, K.A., Ioannis, K.P., Kokossis, A.C.
||Computer Aided Chemical Engineering, vol.37, p.2015-2020, 2015
||Heat integration; Multiple effect distillation; Transshipment
||Heat integration of distillation columns can be succeeded using several schemes. These may include multiple effects and thermally-coupled systems, heat pumping, feed preheating or combinations of all of them. Moreover, setting individual integration of distillations in the scope of overall process integration is possible to secure operation even at zero energy cost. This paper focuses on the scheme of multi-effect distillation due to its high potentials for stand-alone and integration with the overall process. The proposed methodology examines the synthesis specifications (number, pressures and feed split fractions) of multiple effects, scoping for promising structures ahead of analytical design and rigorous optimization analyses. A MILP mathematical formulation is presented to optimally synthesize multi-effect distillation systems taking into consideration the integration of the effects with the overall process at the same time. The model is illustrated through a real-life biorefinery including the integration of three different distillation processes succeeding in energy savings up to 82%. © 2015 Elsevier B.V.
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