Freezing Points of the Ternary System Glycerol-Methanol-Water

Feldman, Harry B.; Dahlstrom, Walter G.

doi:10.1021/ie50323a019

Cited by 5 publications

(2 citation statements)

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“… a Standard uncertainty: MEG solutions: ±0.3 wt % and MeOH solutions: ±0.1 wt %. b Standard uncertainty: 0.4 K. c Temperature calculated from the collected data d Temperature from refs − . …”

Section: Experimental Methodsmentioning

confidence: 99%

Measurements and Predictions of Gas Hydrate Phase Equilibria for CO₂-Rich Gas Mixtures

Lee,

Sum

2024

Energy Fuels

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Gas hydrates are an ever-present concern in oil and gas production, as their undesirable formation results in flowline blockage, creating a significant operational loss and hazardous conditions. While the predictions of gas hydrate phase equilibria are mostly reliable, the data for hydrate phase equilibria in the literature are mostly limited under typical natural gas mixtures with a low CO 2 content. Uncertainties in the predictions are significant when considering CO 2 -rich systems at high pressures and high concentrations of thermodynamic hydrate inhibitors (THIs). This study assesses the reliability and accuracy of hydrate dissociation conditions for CO 2 -rich gas mixtures in the presence of THIs with experimental measurements of hydrate dissociation and comparisons to prediction tools. Hydrate phase equilibria for four gas mixtures of CO 2 + CH 4 (20/80 and 80/20 mol %) and CO 2 + CH 4 + C 3 H 8 (20/75/5 and 60/37/3 mol %) with monoethylene glycol and methanol were determined at pressures up to 50 MPa and compared with four different prediction tools: PVTsim, Multiflash, Hu−Lee−Sum (HLS) correlation, and the ice melting point method. Among the predictions, the HLS correlation and ice melting methods showed a higher prediction accuracy than that of PVTsim and Multiflash. Overall, the determination and predictions of the phase equilibria in the conditions in this study are significant for CO 2 -rich systems, applicable to many of the current fields rich in CO 2 and suitable for applications such as CO 2 transportation for reinjection into the reservoir for greenhouse gas abatement.

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Section: Experimental Methodsmentioning

confidence: 99%

Measurements and Predictions of Gas Hydrate Phase Equilibria for CO₂-Rich Gas Mixtures

Lee,

Sum

2024

Energy Fuels

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“…Mixtures of various common antifreeze materials have been previously proposed. Feldman and Dahlstrom (4) suggested the use of methanol-glycerol mixtures and determined the freezing points of the ternary system glycerol-methanolwater. Aldrich and Querfeld (1) determined the freezing and boiling points of the system ethanol-methanol-water.…”

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confidence: 99%

Freezing Points of the System Ethylene Glycol–Methanol–Water

Conrad¹,

Hill²,

Ballman³

1940

Ind. Eng. Chem.

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THATan antifreeze of superior qualities might be developed by mixing methanol and ethylene glycol, two of the most widely used antifreeze materials, seems apparent. The use of methanol would lower the cost and the glycol would lower the volatility of the methanol. Both methanol and glycol produce only small increases in viscosity (S) when added to water and hence permit nearly normal radiator circulation and heat transfer.

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Über einige Derivate der Saccharose. I. Darstellung und Eigenschaften von oxäthylierten Saccharosen

Gerhardt¹

1965

J. Prakt. Chem.

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Freezing Points of the Ternary System Glycerol-Methanol-Water

Cited by 5 publications

References 1 publication

Measurements and Predictions of Gas Hydrate Phase Equilibria for CO₂-Rich Gas Mixtures

Measurements and Predictions of Gas Hydrate Phase Equilibria for CO₂-Rich Gas Mixtures

Freezing Points of the System Ethylene Glycol–Methanol–Water

Über einige Derivate der Saccharose. I. Darstellung und Eigenschaften von oxäthylierten Saccharosen

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Freezing Points of the Ternary System Glycerol-Methanol-Water

Cited by 5 publications

References 1 publication

Measurements and Predictions of Gas Hydrate Phase Equilibria for CO2-Rich Gas Mixtures

Measurements and Predictions of Gas Hydrate Phase Equilibria for CO2-Rich Gas Mixtures

Freezing Points of the System Ethylene Glycol–Methanol–Water

Über einige Derivate der Saccharose. I. Darstellung und Eigenschaften von oxäthylierten Saccharosen

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Product

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Measurements and Predictions of Gas Hydrate Phase Equilibria for CO₂-Rich Gas Mixtures

Measurements and Predictions of Gas Hydrate Phase Equilibria for CO₂-Rich Gas Mixtures