Control and properties of processes with recycle dynamics
Abstract: This project discusses the effects of recycle streams on the dynamics and performance of chemical plants. The questions addressed are: can the current industry standard tuning methods still be applied to systems with recycle, and if not, how can they be modified? This is approached by analysing the arrest time tuning method when applied to an integrating process with and without recycle. The results show that the integrating model does not capture all the relevant dynamics of the integrating process with recycle. Consequently a new model, and an easy tuning method for the industry standard controllers, is proposed.
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