Fluid Proerty Data Summery

7/31/2019 Fluid Proerty Data Summery

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When you have established acomponent list, you combine thecomponent list with a property

package. The property package is acollection of methods for calculatingthe properties of the selected

components. The combination of thecomponent list and the propertypackage, along with other simulationsettings, is called the fluid package.

FLUID PROERTY DATA


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TYPES OF FLUID PROPERTYMODEL

1. Equations of State (EOS)

2. Activity Models

3. Chao Seader & Grayson StreedModels

4. Vapor Pressure Models

5. Miscellaneous Types
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EOS USE

GCEOS(Generalisedcubic equation ofstates)

Customize generalized cubic equation of state includingmixing rules and volume translation

Kabadi Danner Vapor- liquid liquid equilibria calculations for H2O & H/Cssytems in dilute regions.

Lee-kessler Non polar substances; recommended for ethylene tower.

Peng Robinson for VLE calculations as well as calculating liquid densities forhydrocarbon systems. Temperature Range > -271C or

-456F. Pressure Range < 100,000 kPa or 15,000 psia. TEGDehydration, TEG Dehydration with Aromatics , Cryogenic GasProcessing, Air Separation, Atm Crude Towers, VacuumTowers, High H2 Systems, Reservoir Systems, HydrateInhibition, Crude Systems.

PRSV It is used for non ideal systems. It has the potential to moreaccurately predict the phase behavior of hydrocarbonsystems, particularly for systems composed of dissimilarcomponents.Cryogenic Gas Processing, Air Separation, Chemical systems,HF Alkylation

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Activity model USE

Chien Null chemical systems with highly non-ideal chemicals.

Wilson the Wilson model cannot be used for systems with two liquidphases. , it can represent almost all non-ideal liquid solutions

satisfactorily except electrolytes and solutions exhibiting limitedmiscibility (LLE or VLLE). It performs an excellent job of predictingternary equilibrium using parameters regressed from binary dataonly.

NRTL (TheNon-Random-Two-Liquid)

The NRTL property package is used for chemical systems and HFAlkylation with highly non-ideal chemicals

General NRTL Apply this model to systems:with a wide boiling point range between componentswhere you require simultaneous solution of VLE and LLE, and

there exists a wide boiling point or concentration range betweencomponents.

ExtendedNRTL

As same as above.

Margules The Margules model was the first Gibbs excess energyrepresentation developed. The equation does not have anytheoretical basis, but is useful for quick estimates and data


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Chaos seader andgrayson streed

USE

Chaos Seader for heavy hydrocarbons, where the pressure is less than10342 kPa (1500 psia), and temperatures range between-17.78 and 260C (0-500F). CS is recommended for

problems containing mainly liquid or vapour H2O. The CSproperty package can also be used for three-phaseflashes, but is restricted to the use of pure H2O for thesecond liquid phase.

Grayson Streed is recommended for use with systems having a highconcentration of H2 because of the special treatment

given H2 in the development of the model. The GScorrelation can also be used for simulating topping unitsand heavy ends vacuum applications This correlationmay also be slightly more accurate in the simulation ofvacuum towers.The Grayson-Streed (GS) property package can be

used for three-phase flashes, but is restricted tothe use of pure H2O for the second liquid phase.


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Vapor pressuremodel

USE Misc USE

Antoine for low pressure systemsthat behave ideally.

They should not beconsidered for VLEpredictions for systemsoperating at highpressures or systemswith significant

quantities of lighthydrocarbons

Amine amine plant simulation

Braun K10 The Braun K10 model isstrictly applicable toheavy hydrocarbonsystems at low

pressures.

DBR Amine

Esso tabular is strictly applicable tohydrocarbon systems atlow pressures. Themodel employs amodification of the

Maxwell-Bonnel vapourressure model.

ASME streamThe ASME Steam propertypackage is restricted to asingle component, namelyH2O. It acsses the ASME1967 steam tables. The

limitations of this steamacka e are the same as

t t t t t t


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m- assone equat on o state to eterm ne t ephase behaviour more accurately and consistently forthe TEG-water mixture

NBS The NBS Steam property package is restricted to asingle component, namely H2O. It uses the NBS 1984Steam Tables, which reportedly have bettercalculations near the Critical Point than ASME 1967steam tables.

MBWR The Modified BWR (MBWR) property package isrecommended for systems with select gases and lighthydrocarbons.

OLI Electrolyte for predicting the equilibrium properties of a chemicalsystem including phase and reactions in a watersolution.

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Fluid Proerty Data Summery