HYSYS.Plant case study

For more details on the implementation and tuning of PI controllers using HYSYS.Plant, the reader is referred to the multimedia CD-ROM that accompanies this text (HYSYS - Dynamic Simulation Tuning PI Controllers). In the following case studies, C R analysis is demonstrated, with results verified using d)mamic simulations of the Pl-controlled processes. 

As shown in the case studies, it is recommended that dynamic simulation be employed to verify the results obtained by C R analysis. This simulation is routinely performed using HYSYS.Plant and ASPEN DYNAMICS, as demonstrated in this chapter. The reader is referred to the book Plantwide Dynamic Simulators in Chemical Processing and Control (Luy-ben, 2002) for many additional examples in which dynamic simulation assists plantwide controllability analysis. 

In the proposed framework, HYSYS. PLANT simulation package is used to validate both the steady state and dynamic models even though the switchability fiom steady state to dynamic mode is not a trivial procedure, as it will be shown in the case study section. 

This chapter serves as a guide to model atmospheric distillation section of the crude distillation unit. We provide relevant process, operational and modeling details to model the atmospheric column. We also discuss methods to estimate missing data for model development We provide step-by-step instructions to model a particular column in Aspen HYSYS. We discuss how to validate the model predictions with plant data and how to use the model to perform industrially useful case studies. 

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