Comments on “Understanding cubic equations of state: A search for the hidden clues of their success”

Heidaryan, Ehsan

doi:10.1002/aic.16409

Cited by 1 publication

(2 citation statements)

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“…The coefficient k is a function of acentric factor (ω) and is expressed in two forms. The first form was proposed for light hydrocarbons (when ω < 0.49) as follows In 1978, Peng and Robinson introduced a cubic equation to calculate the coefficient k for heavier components (when ω > 0.49) as follows A more recent form for calculating α( T ) has been reported elsewhere …”

Section: Thermodynamic Modelmentioning

confidence: 99%

“…A more recent form for calculating α(T) has been reported elsewhere. 29 For Athabasca bitumen, the critical pressure was tuned to match the experimental density data for bitumen at room temperature. The specific gravity (SG) and molecular weight of Athabasca bitumen were taken from Zirrahi et al, 19 whereas the normal boiling point temperature (T b ) of bitumen was calculated using Goossen's correlation.…”

Section: Thermodynamic Modelmentioning

confidence: 99%

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Solubility and Liquid Density of Ammonia/Athabasca Bitumen Mixtures at Temperatures up to 463 K: Measurements and Modeling

Dahbag

Zirrahi

2019

J. Chem. Eng. Data

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We report the experimental data of ammonia solubility in Athabasca bitumen measured at different temperatures and pressures ranging from 348 to 463 K and 1 to 4 MPa, respectively. The liquid-phase density of ammonia-saturated bitumen was measured for the samples that were taken during solubility measurements. The experimental data for ammonia solubility in bitumen were modeled using the Peng–Robinson equation of state. The volume-shift parameters of ammonia were tuned to represent the experimental density data of ammonia-saturated bitumen with an average absolute relative deviation percent (AARD%) of 0.218%. Also, tuning the binary interaction coefficient between ammonia and bitumen allowed the prediction of solubility data with an AARD of 8.537%. The data and the tuned model find applications in the reservoir modeling of solvent-aided thermal recovery of bitumen and heavy oil.

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Section: Thermodynamic Modelmentioning

confidence: 99%

Section: Thermodynamic Modelmentioning

confidence: 99%