Vapor-Liquid Equilibria of Binary and Ternary Systems Containing Hydrogen and Light Hydrocarbons

Sagara, Hiroshi; Arai, Yasuhiko; Saito, Shozaburo

doi:10.1252/jcej.5.339

Cited by 64 publications

(15 citation statements)

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“…Solubility of hydrogen in several hydrocarbon solvents at low temperatures has been reported by Cook et al (1957), Williams and Katz (1954), Benham and Katz (1957), and Sagara et al ( 1972). Ipatiev et al (1948 measured hydrogenhenzene up to 150°C and 200 atm.…”

Section: Conclusion and Significancementioning

confidence: 73%

Vapor‐liquid equilibrium of hydrogen/tetralin system at elevated temperatures and pressures

et al. 1977

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A flow type of apparatus is built to give equilibrium gas and liquid samples at elevated pressures and temperatures while minimizing thermal decomposition. Saturated vapor and liquid compositions and K values are determined with this apparatus for the binary system hydrogen/tetralin (1,2,3,4-tetrahydronaphthalene) at SCOPEThis work extends experimental investigation of phase equilibrium of hydrogedheavy solvent systems to elevated pressures and temperatures of interest in hydro treating processes, particularly coal liquefaction processes. Information on the amount of dissolved hydrogen in the liquid phase is useful for analysis of reaction mechanism and for engineering design of blowdown and associated separation systems.Previous studies of the phase equilibrium of hydrogen/ solvent systems have been limited to relatively low temperatures. An exception is found in the work by Grayson and Streed (1963) in which a correlation of K values of hydrogen in heavy oils was presented for temperatures and pressures comparable to this work, but no detailed experimental data were given.The system hydrogedtetralin reported here is the first system studied in the new flow type of apparatus we have just built. The study is being continued with other hydrogen mixture systems. The data gathered with various types of solvents will contribute to the development of general quantitative description of the solubility of hydrogen in complex liquid mixtures. CONCLUSIONS AND SIGNIFICANCEVapor-liquid equilibrium in hydrogen/solvent systems has been the subject of a great deal of investigation owing to their industrial importance and scientific interest. The development of hydro treating and coal liquefaction processes generated renewed interest focused on conditions of high temperature and pressure and on heavy solvents. In this work we built a new flow type of apparatus and showed that equilibrium data can be obtained from it with small residence times of the samples in the high temperature zone. Thermal decomposition is minimized as residence time is reduced, making possible determination of equilibrium data at high temperatures that would otherwise lead to excessive decomposition.That equilibrium is attained in the apparatus at the conditions of operation is supported by the positive results obtained from three tests:1. The sample compositions are independent of flow rates within the range of flow rates employed.2. Data on hydrogedbenzene from our apparatus agree with results obtained by Connolly (1962) from a static apparatus.3. The new data on hydrogedtetralin satisfy the GibbsDuhem equation.Equilibrium saturated liquid and gas compositions and K values are determined for the binary system hydrogen/ tetralin at four temperatures (189. 6O, 268.7O, 348.6O, 389.1OC) and seven pressures (20, 30, 50, 100, 150, 200, 250 am). Henry constant of hydrogen is determined from the data. The results are useful for modeling the phase behavior of hydro treating and coal liquefaction processes. Since tetralin is widely used as a hydrogen-donor s...

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Section: Conclusion and Significancementioning

confidence: 73%

Vapor‐liquid equilibrium of hydrogen/tetralin system at elevated temperatures and pressures

et al. 1977

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“…Significant effort has been made to investigate the thermodynamic properties of hydrogen-containing mixtures systematically [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] . In addition, the phase equilibria and solubility of Hydrogen-natural gas components contained blends have been studied by researchers (see Table 1).…”

Section: Background and Summarymentioning

confidence: 99%

Thermodynamic and transport properties of hydrogen containing streams

et al. 2020

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the use of hydrogen (H 2) as a substitute for fossil fuel, which accounts for the majority of the world's energy, is environmentally the most benign option for the reduction of CO 2 emissions. this will require gigawatt-scale storage systems and as such, H 2 storage in porous rocks in the subsurface will be required. accurate estimation of the thermodynamic and transport properties of H 2 mixed with other gases found within the storage system is therefore essential for the efficient design for the processes involved in this system chain. In this study, we used the established and regarded GERG-2008 Equation of State (EoS) and SupertRaPP model to predict the thermo-physical properties of H 2 mixed with CH 4 , N 2 , CO 2 , and a typical natural gas from the North-Sea. the data covers a wide range of mole fraction of H 2 (10-90 Mole%), pressures (0.01-100 MPa), and temperatures (200-500 K) with high accuracy and precision. Moreover, to increase ease of access to the data, a user-friendly software (H2Themobank) is developed and made publicly available.

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“…The critical parameters and acentric factor obtained from the NIST database are summarized in Table . The binary interaction parameters shown in Table were generated by Aspen Plus ® simulator by fitting experimental VLE data for the binary systems . The average absolute relative deviation (AARD) compares the experimental and predicted values in each phase at equilibrium, and is defined as follows for the individual phases

{normalA normalA normalR normalD}_{x} = \frac{1}{normalN normalD} {false\sum}_{1}^{N D} \frac{| x_{normalc normala normall -}^{i} x_{normale normalx normalp}^{i} |}{x_{normale normalx normalp}^{i}}

{normalA normalA normalR normalD}_{y} = \frac{1}{normalN normalD} {false\sum}_{1}^{N D} \frac{| y_{normalc normala normall}^{i} - y_{normale normalx normalp}^{i} |}{y_{normale normalx normalp}^{i}}

where ND represents the number of data points,

x_{normale normalx normalp}^{i}

y_{normale normalx normalp}^{i}

and

x_{normalc normala normall}^{i}

y_{normalc normala normall}^{i}

represent the experimental and calculated mole fractions of each component in the liquid and vapor phases, respectively.…”

Section: Vapor–liquid‐equilibrium (Vle) Modelingmentioning

confidence: 99%

Enhanced solubility of hydrogen and carbon monoxide in propane‐ and propylene‐expanded liquids

2017

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Conventional propylene hydroformylation occurs in a gas‐expanded liquid phase. Reliable knowledge of the phase equilibria of such systems, including the solubilities of CO and H2 in propylene‐expanded solvents, is essential for rational process design and development. Herein, we report the vapor–liquid equilibrium (VLE) data of the following ternary systems involving CO, H2, propane, propylene, toluene and NX‐795 at temperatures from 70 to 90°C and pressures up to 1.5 MPa: propane/H2/toluene, propane/CO/toluene, propylene/H2/toluene, propylene/CO/toluene, propane/H2/NX‐795, propane/CO/NX‐795, propylene/H2/NX‐795 and propylene/CO/NX‐795. The solubilities of H2 and CO in either propane‐expanded or propylene‐expanded phases are observed to be greater than those in the neat organic solvents, by as high as 78% at 70°C and 1.5 MPa. By modeling the vapor and the liquid phases as pseudo‐binary systems, the Peng‐Robinson equation of state (PR‐EoS) with van der Waals’ mixing rules and binary interaction parameters is shown to satisfactorily predict the experimental VLE data. © 2017 American Institute of Chemical Engineers AIChE J, 64: 970–980, 2018

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Vapor-Liquid Equilibria of Binary and Ternary Systems Containing Hydrogen and Light Hydrocarbons

Cited by 64 publications

References 0 publications

Vapor‐liquid equilibrium of hydrogen/tetralin system at elevated temperatures and pressures

Vapor‐liquid equilibrium of hydrogen/tetralin system at elevated temperatures and pressures

Thermodynamic and transport properties of hydrogen containing streams

Enhanced solubility of hydrogen and carbon monoxide in propane‐ and propylene‐expanded liquids

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