The Reduced Sugar benchmark presents a simplified control and optimization problem centred in the final part of a sugar factory that involves the operation of three sugar crystallizers. The exercise offers a platform to research teams where a variety of methods, centralized or distributed, for optimal plant-wide operation of process plants can be tested.  The benchmarking will show what can be achieved with state of the art methods for dynamic operation of process factories.

The aim of the exercise is to operate the plant optimally, according to a set of (economic) targets, and respecting a set of constraints. The semi-batch crystallizers should process an incoming stream of syrup delivered by the upstream plant producing sugar crystals in an optimal way in spite of the constraints posed by the shared resources of steam and syrup. The low level regulatory control system is given and the participants can concentrate its efforts in two levels: locally in each crystallizer, trying to operate each one optimally, and globally, considering its joint operation by means of the right scheduling in order to avoid bottlenecks, perform adequate transitions between operating points, reduce energy costs,  etc.

An overview of the reduced benchmark can be found in OverviewReducedSugarBenchmark.pdf.