Integration of Design and Control for Energy Integrated Distillation

A systematic computer aided analysis of the process model is used as a pre-solution step for integration of design and control problem. In this paper, a static energy integrated distillation plant model is first presented, then the analysis is presented for a single distillation column, subsequently the column analysis is extended with the analysis for the heat pump. The analysis relates to the process and control design. The sensitivities of the plant are revealed in the analysis and through simulation. The insights developed hereby lead to a modification of the actuator set for the integrated plant. The final result holds the promise that an integrated design and control problem can be defined correctly and consistently with respect to the process behaviours and the selected process models. The key contribution of this work is the qualitative analysis and insights gained from the model analysis with respect to actuator selection and to control structure selection.