Dissipativity analysis for networks of process systems

The paper presents stability and stabilizability analysis for plant-wide chemical processes. The process is modeled as a network of process systems with multiple recycle streams and energy integration. One of the key problems that we address in the paper is how to determine dissipativity properties of the process network from the dissipativity properties of the individual process systems and the topology of the network. The results in the paper extend the dissipativity analysis based on thermodynamics for individual processes to dissipativity-based conditions (storage functions and supply rates) suitable for process network analysis. The new storage and supply functions are based on balance equations represented in terms of temperatures and compositions rather than internal energy and chemical potentials. This makes the theory easier to apply to typical chemical process model systems. A simple example is provided to illustrate the application of the theory.

► Analysis for plantwide process systems from a network perspective.
► Plantwide stability and stabilizability based on the dissipativity of process system units and the topologies of process networks.
► Dissipativity analysis based on physical properties of process systems with the storage based on an abstract availability function.
► Robust dissipativity conditions for process systems networks with time varying inventories and interconnecting flows.