Equipment using a “static-analytic” method for solubility measurements in potentially hazardous binary mixtures under cryogenic temperatures

Houssin-Agbomson, Deborah; Coquelet, Christophe; Richon, Dominique; Arpentinier, Philippe

doi:10.1016/j.cryogenics.2010.01.014

Cited by 9 publications

(18 citation statements)

References 10 publications

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“…A detailed description of the setup can be found in Baba− Ahmed et al 2 and Houssin−Agbomson et al 4 2.3. Calibrations and Uncertainty Estimation.…”

Section: Apparatus Descriptionmentioning

confidence: 99%

“…Since 1990s, the Centre of Thermodynamics of Processes has been involved in the study of the thermodynamic behavior (experimental measurements and thermodynamic calculations) of such mixtures. As examples of results obtained, we can mention the study of phase equilibria of several binary systems, O 2 –N 2 , O 2 –Ar, and Ar–N 2 (VLE, Baba-Ahmed et al., O 2 –CO 2 , O 2 –N 2 O (solid solubility in liquid oxygen, De Stefani et al), O 2 –propane (VLLE, Houssin–Agbomson et al), and N 2 –propane (VLLE, Houssin–Agbomson et al). NO, CO, and Ar are also impurities present with CO 2 after the process of CO 2 capture.…”

Section: Introductionmentioning

confidence: 99%

“…The core of a conventional Air Separation Unit (ASU) is a system of two distillation columns and a reboiler-condenser in between working at about 100 K. The importance of this process depends heavily on its capability in providing extremely pure nitrogen (10 ppb of impurities) and oxygen (purity from 85% up to 99.7%) in both the liquid and vapor states. 4 ) and N 2 -propane (VLLE, Houssin-Agbomson et al 5 ). NO, CO and Ar are also impurities present with CO 2 after the process of CO 2 capture.…”

Section: Introductionmentioning

confidence: 99%

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Phase Equilibrium of Three Binary Mixtures Containing NO and Components Present in Ambient Air

et al. 2018

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Air contains impurities, which must be removed before its transformation and utilization. In the present work, new isothermal Vapor-Liquid Equilibrium (VLE) data are reported for three binary systems containing NO with (CO, N 2 or Ar) at different temperatures (between 105 and 146 K) and pressures up to 4 MPa. The compositions of the coexisting phases were experimentally determined using an apparatus based on the "static-analytic" method. The Peng-Robinson Equation of State combined with different mixing rules (classical, Wong-Sandler and Huron-Vidal) were used to represent the phase diagram (P, x, y).

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“…A detailed description of the setup can be found in Baba− Ahmed et al 2 and Houssin−Agbomson et al 4 2.3. Calibrations and Uncertainty Estimation.…”

Section: Apparatus Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phase Equilibrium of Three Binary Mixtures Containing NO and Components Present in Ambient Air

et al. 2018

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“…Baba-Ahmed et al [13] suggested an apparatus for measurements under cryogenic conditions (down to 77 K). The equilibrium cell was thereafter redesigned by Houssin-Agbomson et al [14].…”

Section: Introductionmentioning

confidence: 99%

An improved static–analytic apparatus for vapor–liquid equilibrium ( PTxy ) measurement using modified in-situ samplers

Zhang

Théveneau

Ahmar

et al. 2016

Fluid Phase Equilibria

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An improved apparatus based on the static-analytic method for reliable vapor-liquid equilibrium (VLE) data measurement is presented in this work. It has been applied to investigate systems containing organic sulfur compounds. New sampling mechanisms were combined with ROLSI TM capillary samplers to achieve on-line sampling for both vapor and liquid phases in a pressure range between 0.1 and 10 bar. Phase samples were directly sent to a gas chromatograph for composition analysis. The equipment was tested against other commonly used experimental methods in this pressure range on the (n-butane + ethanol) and (diethyl sulfide + ethanol) systems. The obtained data were correlated by Wilson model and compared with existing data. The improved apparatus has shown comparable performances to existing methods, while showing some advantages such as complete PTxy phase measurements and less product consumption. After the validation step, additional VLE data for binary systems of interest, (diethyl sulfide + n-butane) and (1-pentanethiol + 1-pentanol), were reported and modeled in this work.

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“…Capillary samplers have been used in the field of low temperature phase equilibria down to 70 K 13,14 for studies related but not limited to the solids cosolubility in liquid oxygen, 15 solubility measurements in potentially hazardous binary mixture such as hydrocarbon−oxygen systems 16 and also for the phase equilibria in the presence of gas hydrates. 17 The materials used for the construction of the equipment in this work, allow working with hydrogen mixtures.…”

Section: Introductionmentioning

confidence: 99%

Design of Equilibrium Cells for Phase Equilibria and PVT Measurements in Large Ranges of Temperatures and Pressures. I. Vapor–Liquid–Liquid Equilibria

et al. 2016

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Acquiring accurate experimental thermodynamic data is very useful for the development of models and chemical processes. Although there are plenty of data in the scientific literature, there are still many missing. In fact, many of the easier measurements have been made, and far more of the remaining ones deal with either complex systems or extreme conditions. Clearly new adequate equipment for acquiring such data are welcome. For these purposes, advice coming from several decades of equipment design experience are exposed herein. After defining the aim pursued and consequently the type of desired thermodynamic quantity, it is necessary to take into account all physical and chemical constraints: viscosity, density, corrosive power of studied chemical systems, temperature, pressure together with other important points such as miniaturization, efficient stirring, avoiding both dead volume and polymer sealing. The other aim of this paper is to present a high temperature and high pressure apparatus capable of measuring the phase equilibria of systems exhibiting vapor–liquid–liquid behavior. The apparatus designed and built consists mainly of an equilibrium cell (70 cm3), novel high temperature, and high pressure samplers and a gas chromatograph. A detailed description of the apparatus is presented. Preliminary measurements are presented for propane in water, cyclohexane in water, and water in cyclohexane up to 498.8 K. In addition the solubility of 2-methylfuran in water up to 413 K and 1548 kPa was measured.

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Equipment using a “static-analytic” method for solubility measurements in potentially hazardous binary mixtures under cryogenic temperatures

Cited by 9 publications

References 10 publications

Phase Equilibrium of Three Binary Mixtures Containing NO and Components Present in Ambient Air

Phase Equilibrium of Three Binary Mixtures Containing NO and Components Present in Ambient Air

An improved static–analytic apparatus for vapor–liquid equilibrium ( PTxy ) measurement using modified in-situ samplers

Design of Equilibrium Cells for Phase Equilibria and PVT Measurements in Large Ranges of Temperatures and Pressures. I. Vapor–Liquid–Liquid Equilibria

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