2-LEVEL MODEL-BASED DESIGN OF SOLIDS PROCESSING SYSTEMS

A two-level method has been developed for designing solids processing systems in a systematic manner. The system to be designed is described on two hierarchical levels by using two types of models for each proc ess: rigorous and reduced (simple) ones. The higher modeling (and, at the same time, computational) level, called-network level, is the netw ork of operation modules described by means of reduced mathematical mo dels, while the lower one; called process level, is formed by the deta iled processes of operation modules, represented by their rigorous one s. This two-level structure greatly meets the:requirements of the meth od of decomposition-coordination of optimization. The method is illust rated through the design of an extractive crystallization; system whic h is a frequently used technique for the separation of close-boiling P oints compounds. (C) 1998 Published by Elsevier Science Ltd. All right s reserved.