Pareto optimal design and operation of multivesselbatch distillation

摘要

Multivessel batch distillation (MBD) has been proposed and investigated tomeet changing demands of the specialty and fine chemistry. This contributionaddresses the multiobjective optimisation of a MBD with one intermediatevessel for the first time. The process is highly non-linear and inherent dynamic.Design and operating parameters has been considered simultaneously. Theproblem formulation results in a mixed integer dynamic optimisation (MIDO)problem. It is solved using a sophisticated framework based on a modifieddifferential evolution algorithm (MDE). The challenging non-linear dynamicmodel is solved in Aspen Custom Modeler. The start-up phase, usuallyneglected, has been taken into account. Selected results of the multiobjectiveMIDO will be discussed.