Predominance Diagrams, a Useful Tool for the Correlation of the Precipitation–Solubility Equilibrium with Other Ionic Equilibria

The densities and compositions of both phases in the methane-n-heptane solubility equilibrium have been determined at 25°, 55°, and 85 °C. at total pressures from 35 to 250 atm. The critical pressures of complete miscibility were found, and the properties of the system are discussed. The nitrogen-n-heptane system was investigated similarly at 100.9 atm. and temperatures from 25° to 115 °C. The system composed of Viking natural gas and impure heptanes was also investigated at 25 °C. The three systems, methane-pentane, -hexane, and -heptane are compared and discussed.

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Students’ misconceptions on solubility equilibrium

Journal of Physics Conference Series ◽

10.1088/1742-6596/1022/1/012035 ◽

2018 ◽

Vol 1022 ◽

pp. 012035 ◽

Cited By ~ 2

Author(s):

H Setiowati ◽

S B Utomo ◽

Ashadi

Keyword(s):

Solubility Equilibrium

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Effect of Halide Anions on Ionic Equilibria and Catalytic Activities of Zn and Cd Catalysts In DMF, in Dehydrocoupling of Hydrosilanes with Nucleophiles Containing Hydroxyl Group

Main Group Metal Chemistry ◽

10.1515/mgmc.2004.27.3.155 ◽

2004 ◽

Vol 27 (3) ◽

Cited By ~ 1

Author(s):

Jerzy J. Chrusciel

Keyword(s):

Hydroxyl Group ◽

Catalytic Activities ◽

Halide Anions ◽

Ionic Equilibria

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Ionic equilibria in aqueous organic solvent mixtures The equilibria of HF in an ethanol + water mixture used for cleaning up semiconductors

Journal of Electroanalytical Chemistry ◽

10.1016/s0022-0728(97)00132-0 ◽

1997 ◽

Vol 433 (1-2) ◽

pp. 77-83 ◽

Cited By ~ 9

Author(s):

Clara Ràfols ◽

Koit Herodes ◽

JoséLuis Beltrán ◽

Elisabeth Bosch ◽

Martí Rosés

Keyword(s):

Organic Solvent ◽

Solvent Mixtures ◽

Water Mixture ◽

Ionic Equilibria

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Predominance diagrams of uranium and plutonum species in both lithium chloride–potassium chloride eutectic and calcium chloride

Journal of Applied Electrochemistry ◽

10.1007/s10800-013-0611-9 ◽

2013 ◽

Vol 43 (12) ◽

pp. 1235-1241 ◽

Cited By ~ 11

Author(s):

L. D. Brown ◽

R. Abdulaziz ◽

S. Simons ◽

D. Inman ◽

D. J. L. Brett ◽

...

Keyword(s):

Potassium Chloride ◽

Calcium Chloride ◽

Lithium Chloride ◽

Predominance Diagrams

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Application of OLI Electrolyte Simulation to the Resolution of Corrosion Concerns Within a Reciprocating Compressor

ASME 2012 International Manufacturing Science and Engineering Conference ◽

10.1115/msec2012-7224 ◽

2012 ◽

Author(s):

Diane L. Stewart ◽

Anthony J. Gerbino ◽

Tony Scribner

Keyword(s):

Simulation Software ◽

Dew Point ◽

Reciprocating Compressor ◽

Particulate Contamination ◽

Ionic Equilibria ◽

Water Ph ◽

Condensed Water ◽

Compressor Reliability

A 38 MMSCF/D Cooper Bessemer Model LM-9 reciprocating compressor in hydrogen service at the Praxair Westlake LA facility has experienced notable particulate contamination within the feed gas. The particulates were believed to be caused by upstream piping corrosion; however, to definitely state the cause, the properties of the fluid existing in the five-stage compressor needed to be more fully understood. An OLI electrochemical simulation software was used for dew point prediction, determination of the condensed phase ionic equilibria, and corrosion rate prediction. These tasks were beyond capabilities of the site-licensed UniSim software, as presently configured. Specifically, the model was used to identify the dew point conditions (temperature, pressure) and properties of the condensed water (pH, corrosivity, dissolved O2, and chlorine speciation). Model results were compared with site inspection findings. Subsequently, recommended limits for chlorine and oxygen in the feed gas were established to improve long term compressor reliability.

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