Integration of Design and Control for a large scale flowsheet

In order to design a process that operates close to tighter boundaries safely, much attention has been devoted to the integration of design and control, in which the design decisions, dynamics, and controlled performance are considered simultaneously in optimal fashion. However, rigorous methods for solving design and control simultaneously meet challenging mathematical formulations which become computationally intractable. In an earlier paper of our group, a new mathematical formulation to reduce the combinatorial complexity of integrating design and control was introduced. We showed that substantial reduction in the problem size can be achieved by embedded control for specific process designs. In this paper, we extend the embedded control to the plantwide process. This case will demonstrate the current capabilities of the methodology with integrated design and control under uncertainty.