Abstract
A generalized model for the dynamic simulation of distillation columns is presented. The model allows the solution of a wide variety of problems, from open- closed-loop responses of single (and multiple) columns to operability studies (of feed changeover and start-up operations) and column instability studies (effect of plate hydraulics during transient operations). Results are given for single columns (including industrial) as well as multiple columns for different types of operations. The problems include thermodynamically close to ideal systems to highly nonideal systems. Efficient and robust numerical integrators are used to obtain reliable solutions even for difficult discontinuous operations.
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