Isothermal vapor-liquid equilibrium data for binary systems containing carbon dioxide at high pressures: methanol-carbon dioxide, n-hexane-carbon dioxide, and benzene-carbon dioxide systems

Ohgaki, Kazunari; Katayama, Takashi

doi:10.1021/je60068a015

Cited by 260 publications

(81 citation statements)

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“…Vapor pressure (bar) Ohgaki and Katayama, 1976Gupta, 1982Kim et al, 1986 coefficients calculated by TMVOC_REACT were verified against these data. As illustrated in Figures A13 and A14, the calculated values are slightly lower than the measured data at 40°C, whereas they agree reasonably well at 50°C.…”

Section: A4 Binary Benzene + Co 2 Systemmentioning

confidence: 89%

“…Solubility of benzene/phenol in SCC at 60°C as a function of pressure. The solubilities of benzene in SCC are taken from Ohgaki and Katayama (1976), while those for phenol are from Van Leer and Paulaitis (1980). 18 Figure 4.3.…”

Section: List Of Figuresmentioning

confidence: 99%

“…Figures 4.1 through 4.3 show the measured solubility of benzene/phenol in supercritical CO 2 at 40°C, 60°C, and 100°C. At 40°C, Ohgaki and Katayama (1976) and Gupta et al (1982) measured the solubility of benzene in CO 2 at pressure below 77 bar, while Van Leer and Paulaitis (1980) measured the solubility of phenol in CO 2 at pressure above 79 bar. At 77-79 bar, the solubility of these two compounds differ by a factor of 3 to 5, with benzene being more soluble.…”

Section: Organics Of Concern Properties and Selection Of Key Compoundmentioning

confidence: 99%

“…benzene+CO2 Ohgaki and Katayama, 1976 benzene+CO2, Gupta et al, 1982 benzene+CO2, Kim et al, 1986 phenol+CO2, Leer and Paulaitis, 1980 Ohgaki and Katayama (1976), Gupta et al (1982), Kim et al (1986) while those for phenol are from Leer and Paulaitis (1980). Ohgaki and Katayama (1976), while those for phenol are from Van Leer and Paulaitis (1980).…”

Section: Pressure (Bar) Mole Fraction Of Organics In Co2mentioning

confidence: 99%

“…Ohgaki and Katayama (1976), while those for phenol are from Van Leer and Paulaitis (1980). Kim et al (1986), while those for phenol are from Pfohl et al (1997).…”

Section: Pressure (Bar) Mole Fraction Of Organics In Co2mentioning

confidence: 99%

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Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems

Zheng¹,

Spycher²,

Xu³

et al. 2010

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Section: A4 Binary Benzene + Co 2 Systemmentioning

confidence: 89%

Section: List Of Figuresmentioning

confidence: 99%

Section: Organics Of Concern Properties and Selection Of Key Compoundmentioning

confidence: 99%

Section: Pressure (Bar) Mole Fraction Of Organics In Co2mentioning

confidence: 99%

“…Ohgaki and Katayama (1976), while those for phenol are from Van Leer and Paulaitis (1980). Kim et al (1986), while those for phenol are from Pfohl et al (1997).…”

Section: Pressure (Bar) Mole Fraction Of Organics In Co2mentioning

confidence: 99%

See 3 more Smart Citations

Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems

Zheng¹,

Spycher²,

Xu³

et al. 2010

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CO₂ capture by methanol, ionic liquid, and their binary mixtures: Experiments, modeling, and process simulation

2018

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The CO 2 solubility data in the ionic liquid (IL) 1-allyl-3-methylimidazolium bis(trifluoromethyl sulfonyl)imide, methanol (MeOH), and their mixture with different combinations at temperatures of 313.2, 333.2, and 353.2 K and pressures up to 6.50 MPa were measured experimentally. New group binary interaction parameters of the predictive universal quasichemical functional-group activity coefficient (UNIFAC)-Lei model, which has been continually advanced by our group, were introduced by correlating the experimental data of this work and the literature. The consistency between experimental data and predicted results proves the reliability of UNIFAC-Lei model for CO 2 -IL-organic solvent systems. The newly obtained parameters were incorporated into the UNIFAC property model of Aspen Plus software to optimize a conceptual process developed for the purification of a CO 2 -containing gas stream. The simulation results indicate that the use of IL either mixed with MeOH or purely considerably lowers the process power consumption and improves the process performance in terms of CO 2 capture rate and solvent loss. ðx 1 Þ n 5Fðm 1 ; m 2 ; m 3 ; m 4 ; m 5 Þ (1) Figure 2. Flow sheet of the CO 2 capture processes developed in this work.Lines, predicted results by the UNIFAC-Lei model; scattered points, experimental data. ( ) pure [AMIM] 1 [Tf 2 N] 2 ; ( ) 80 wt % [AMIM] 1 [Tf 2 N] 2 1 20 wt % MeOH; ( ) 50 wt % [AMIM] 1 [Tf 2 N] 2 1 50 wt % MeOH; ( ) 20 wt % [AMIM] 1 [Tf 2 N] 2 1 80 wt % MeOH; ( ) pure MeOH. [Color figure can be viewed at wileyonlinelibrary.com]

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Correlation of phase‐separation data for coal‐conversion systems

1982

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A multiparameter corresponding-states correlation is applied to describe fossil-fluid vapor/liquidequilibrium behavior needed to design separation and other process units in coal-liquefaction plants. Data for both defined and undefined fluids pertinent to coal liquefaction are utilized in correlation development. The procurement of these data requires a thorough evaluation and study of the needs for additional data to improve correlations. These needs are systematically outlined in the context of the level of predication capability that can be achieved using the currently available data base.A conformal-solution model is applied to describe the behavior of many defined binary and ternary coal-solvent systems. The correlation is then extended to undefined systems such as those encountered in the Exxon Donor Solvent process. Correlation results are reported and correlation limits are assessed. SCOPEThe methodology for correlating phase-separation data is emphasized. Data requirements for maximum utility in correlation are specified. These include the need for determination of feed composition as well as overhead (e.g., vapor) and bottom (e.g., liquid) compositions so that closure of compositional material balances can be used to provide an evaluation of data consistency. Needs are specified for compositional analysis and characterization in cases of phase-separation data for complex mixtures for which fractions must be treated as pseudocomponents. The multiparameter corresponding-states method using the conformal-solution model for mixtures is used to provide an example of correlation framework and results for coal fluids. CONCLUSIONS AND SIGNIFICANCEThe information presented herein should provide perspective regarding correlation needs for phase-separation data relevant to coal-conversion systems. Fundamental data are required for correlation development, with binary VLE data playing the central role. Defined-system multicomponent VLE data are required for correlation testing and undefined-system VLE data are required to make the correlations applicable to real process streams. The accuracy of the VLE data utilized is an important factor, as erroneous VLE data can lead to erroneous conclusions.Accurate predictions for many coal-fluid systems are possible with a three-parameter corresponding-states correlation using a modified Benedict-Webb-Rubin equation of state for thermodynamic properties and the conformal-solution model for property composition dependence. The coalconversion industry needs a data-procurement program, the development of improved compositional analysis/chemical characterization methods, and further correlation efforts for continued progress towards the capability to describe the VLE and overall thermodynamic behavior of coal fluids.The design of separation processes in coal-conversion systems requires the capability to accurately predict the vapor/liquid equilibrium (VLE) of coal-derived fluids. The starting point in developing this capability is the fundamental data, including binary VLE data,...

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Isothermal vapor-liquid equilibrium data for binary systems containing carbon dioxide at high pressures: methanol-carbon dioxide, n-hexane-carbon dioxide, and benzene-carbon dioxide systems

Cited by 260 publications

References 2 publications

Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems

Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems

CO₂ capture by methanol, ionic liquid, and their binary mixtures: Experiments, modeling, and process simulation

Correlation of phase‐separation data for coal‐conversion systems

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Isothermal vapor-liquid equilibrium data for binary systems containing carbon dioxide at high pressures: methanol-carbon dioxide, n-hexane-carbon dioxide, and benzene-carbon dioxide systems

Cited by 260 publications

References 2 publications

Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems

Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems

CO2 capture by methanol, ionic liquid, and their binary mixtures: Experiments, modeling, and process simulation

Correlation of phase‐separation data for coal‐conversion systems

Contact Info

Product

Resources

About

CO₂ capture by methanol, ionic liquid, and their binary mixtures: Experiments, modeling, and process simulation