Interfacial Tension of CO2 and Organic Liquid under High Pressure and Temperature

Yang, Zihao; Li, Mingyuan; Peng, Bo; Lin, Meiqin; Dong, Zhaoxia; Ling, Yong

doi:10.1016/j.cjche.2014.09.042

Cited by 33 publications

(17 citation statements)

References 24 publications

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“…According to the zero value of IFT, the predicted MMP is 10.8 MPa, which is close to the experimental data 11.2 MPa of Liu et al [39]. Similarly, the predicted MMP (8.63 MPa and 11.0 MPa) at 323.15 K and 348.25 K are also consistent with the experimental value 8.57 MPa (323.15 K) of Yang et al [40] and 11.5 MPa (348.25 K) of Gallegos et al [10], as shown in Supplementary Information Figure S1. Therefore, calculating IFT by MD simulations is an efficient and low-cost method to predict the MMP.…”

Section: Solubility Process Of Co2 and N-octane Systemsupporting

confidence: 88%

Molecular Modeling of CO2 and n-Octane in Solubility Process and α-Quartz Nanoslit

Qin

Gou

et al. 2018

Energies

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After primary and secondary oil recovery, CO 2 -enhanced oil recovery (EOR) has become one of the most mentioned technologies in tertiary oil recovery. Since the oil is confined in an unconventional reservoir, the interfacial properties of CO 2 and oil are different from in conventional reservoirs, and play a key role in CO 2 EOR. In this study, molecular dynamics simulations are performed to investigate the interfacial properties, such as interfacial tension, minimum miscibility pressure (MMP), and CO 2 solubility. The vanishing interfacial tension method is used to get the MMP (~10.8 MPa at 343.15 K) which is in agreement with the reported experimental data, quantitatively. Meanwhile, the diffusion coefficients of CO 2 and n-octane under different pressures are calculated to show that the diffusion is mainly improved at the interface. Furthermore, the displacement efficiency and molecular orientation in α-quartz nanoslit under different CO 2 injection ratios have been evaluated. After CO 2 injection, the adsorbed n-octane molecules are found to be displaced from surface by the injected CO 2 and, then, the orientation of n-octane becomes more random, which indicates that and CO 2 can enhance the oil recovery and weaken the interaction between n-octane and α-quartz surface. The injection ratio of CO 2 to n-octane is around 3:1, which could achieve the optimal displacement efficiency.

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Section: Solubility Process Of Co2 and N-octane Systemsupporting

confidence: 88%

Molecular Modeling of CO2 and n-Octane in Solubility Process and α-Quartz Nanoslit

Qin

Gou

et al. 2018

Energies

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“…Accurately measuring surface and interfacial tension data (here the modifiers surface and interfacial are used interchangeably) for immiscible mixtures at elevated pressures and temperatures are critical for industrial and environmental applications such as CO2 sequestration [47][48][49][50], enhanced oil recovery (EOR) [48,49,[51][52][53], process development [54], and HPHT fuel injection [55]. A number of techniques are available to measure the interfacial tension of gasliquid, vapor-liquid, and liquid-liquid systems at HPHT conditions.…”

Section: Interfacial Tension and Thermal Conductivitymentioning

confidence: 99%

“…A number of techniques are available to measure the interfacial tension of gasliquid, vapor-liquid, and liquid-liquid systems at HPHT conditions. A few of these techniques, used at ambient condition and adapted to high pressure operation, include the pendant drop [47][48][49][50][51][52][53][56][57][58][59][60][61], capillary rise [54,62,63], capillary wave [55], and maximum bubble pressure [64][65][66] methods. The most commonly used HPHT interfacial tension technique is the pendant drop method due to ease of adaptability to high pressure operation and ease of operation to obtain reproducible data.…”

Section: Interfacial Tension and Thermal Conductivitymentioning

confidence: 99%

Fluid properties at high pressures and temperatures: Experimental and modelling challenges

Mallepally

Bamgbade

Rowane

et al. 2018

The Journal of Supercritical Fluids

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Thermophysical properties impact many aspects of the chemical process industries. Here three example areas, primarily in the energy sector, are highlighted to provide context for the experimental and modelling challenges associated with obtaining fluid property data at high pressures and temperatures (HPHT). These three areas include the recovery of petroleum reserves in ultra-deep reservoirs, the use of lubricants to reduce frictional losses in the automotive industries, and the use of high-pressure, common rail diesel fuel delivery to reduce soot emissions for greener environments. The accurate knowledge of thermodynamic and transport properties in these three focused areas minimizes associated operating uncertainties and accelerates safe, reliable, and robust process and product development.

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“…Moreover, many data correlations exist for atmospheric and low pressure and temperature, but very few at high pressure and high temperature. 1,15,16,8,17,18,19,20,21,22,23,24,25 To better understand the behaviour of gas liquid systems at high pressure and temperature, it is first necessary to know the evolution of physical properties in these conditions. The effect of pressure, temperature and saturation on surface tension is investigated in this article.…”

Section: Introductionmentioning

confidence: 99%

“…At high pressure and high temperature, the method commonly used is the hanging drop method. 25,28,32,33,34,35,36,37,38,39,40,41,42,49 . The sessile drop method is sometimes used.…”

Section: Introductionmentioning

confidence: 99%

Measurements and correlations for gas liquid surface tension at high pressure and high temperature

et al. 2018

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Interfacial Tension of CO2 and Organic Liquid under High Pressure and Temperature

Cited by 33 publications

References 24 publications

Molecular Modeling of CO2 and n-Octane in Solubility Process and α-Quartz Nanoslit

Molecular Modeling of CO2 and n-Octane in Solubility Process and α-Quartz Nanoslit

Fluid properties at high pressures and temperatures: Experimental and modelling challenges

Measurements and correlations for gas liquid surface tension at high pressure and high temperature

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