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STEADY-STATE AND DYNAMIC SIMULATION OF CRUDE OIL DISTILLATION USING ASPEN PLUS AND ASPEN DYNAMICS

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Author(s): Juma Haydary | Tomáš Pavlík

Journal: Petroleum and Coal
ISSN 1337-7027

Volume: 51;
Issue: 2;
Start page: 100;
Date: 2009;
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Keywords: crude oil distillation | simulation | ASPEN

ABSTRACT
Steady-state and dynamic simulation of Preflash and Atmospheric column (Pipestill) in a real crudeoil distillation plant was performed using ASPEN simulations. Steady-state simulation resultsobtained by ASPEN plus were compared to real experimental data. Experimental ASTM D86 curvesof different products were compared to those obtained by simulations. Influence of the steam flowrate in the side stripers and of the heat flow removed in pumparounds was analyzed. Significantinfluence of the heat flow removed in pumparounds on the flow conditions in the column and onthe product composition is explained.Steady-state flowsheet was completed by dynamic simulation requirements and exported to ASPENDynamics for simulations in dynamic mode. The behavior of the products flow rate in dynamicregime was observed after changing the crude oil feed by 10%. Two different control methodsbased on composition (ASTM D86 95% boiling point) and temperature at the second stage wereapplied in dynamic simulation. The time needed to reach a new steady-state, deviation, and abilityof reaching the preset parameters of both methods were compared.
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