3 Process systems with significant material recycling
Modern chemical plant designs favor “lean” configurations featuring material recycling, fewer un\its, and diminished material inventory. Together with the elimination of provision for intermediary storage (buffer tanks), these traits intuitively result in significant dynamic interactions between the process units, leading to an intricate dynamic behavior at the process level. Consequently, the design and implementation of advanced, model-based control systems aimed at improving plant performance is a difficult matter, with the complexity, large dimension, and ill conditioning of the process models being major hindrances.
In this chapter, we begin to explore the dynamic ...