Simulação dinâmica de uma coluna de destilação em uma unidade de produção de etanol hidratado
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Date
2019-12-12
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Universidade Católica do Salvador
Abstract
The Ethanol is characterized like a substance of wide applicability in the Brazil. Based
on that, its possible to highlight hydrous ethanol, which is used as fuel for vehicles, the
pharmaceutical industry, alcohol and beverages. However, the purification of hydrous
ethanol becomes an important step for its applications. Therefore, for the development
of hydrous ethanol purification a conventional distillation was used to physically
separate miscible mixtures from each other. In order, to verify the dynamics of the
distillation columns, Aspen Plus Dynamics was used to evaluate six control strategies
and four tuning rules for three distillation columns, in order to verify the best strategy
and apply to hydrous ethanol 92.5%, 93.6% and 94.6% by mass of ethanol, according
to ANP. Thus, from the dynamic study using Aspen Plus Dynamics, it was possible to
verify that the Ziegler-Nichols, Cohen Coon and ITAE methods showed good results,
being similar, in which they chose to select the Ziegler-Nichols method. And among
the control strategies, the double compositions presented better results to the
disturbances performed in the flow and feed composition.
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Keywords
Etanol, Destilação, Aspen plus dynamics, Simulação dinâmica, Coluna de destilação, Ethanol, Distillation, Aspen plus dynamics, Control, Tuning rules