ABSTRACT
ABST R AC T Process integration is a key enabler to increasing efciency in the process and energy generation industries. Efciency improvements are obtained, however, at the cost of an increasingly complex dynamic behavior. As a result, tightly integrated designs continue to be regarded with caution owing to the dynamics and control difculties that they pose. The present work introduces a generic class of integrated networks where signicant energy ows (either arising from energy recycling or of external origin) result in dynamic models with a multi-time-scale structure. Such networks feature a clear distinction between the fast dynamics of individual units and the slow dynamics of the entire network. We draw a connection between specic (steady-state) design features and structural properties that afford the development of a framework for the derivation of low-order, non-stiff, nonlinear models of the core network dynamics. Furthermore, we demonstrate that tight energy integration and the presence of signicant energy ows
CONTENTS
Introduction ......................................................................................................... 956 Process Networks with Tight Energy Integration ......................................... 957 Dynamic Behavior of Networks with High Energy Recycle ........................ 960 Networks with High Energy Throughput ....................................................... 962 Illustrative Examples ..........................................................................................964
