Solubility Measurement and Modeling of Methane in Methanol and Ethanol Aqueous Solutions

Wise, Michael; Chapoy, Antonin; Burgass, Rhoderick William

doi:10.1021/acs.jced.6b00296

Cited by 16 publications

(7 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, the longer chain length of IGEPAL CO-720, compared to IGEPAL CO-630, leads to a higher degree of nonideality in the mixtures. Additionally, branched alkylic chains in IGEPAL CA-720 increase the viscosity deviation compared to methanol (1) + IGEPAL CO-720 (2). Negative values for Δη can be attributed to a predominance of attractive forces and indicate differences in the molecular size and shape of the mixture components.…”

Section: Resultsmentioning

confidence: 98%

Effect of Temperature on Density and Viscosity for Methanol (1) + IGEPAL (2) (CO-720, CA-720, and CO-630) at Atmospheric Pressure

Dantas Medeiros,

Leal da Costa,

de Sá

et al. 2024

J. Chem. Eng. Data

View full text Add to dashboard Cite

Understanding thermodynamic properties in mixtures, particularly those of interest to industries, such as solvents and surfactants, is crucial for comprehending the intermolecular forces that govern these systems. Accurate data on the volumetric and transport properties of solvent–surfactant mixtures are valuable from an academic and industrial perspective. In this paper, we present an experimental study that resulted in 188 data points of density and viscosity for binary mixtures of methanol and IGEPAL (CO-720, CA-720, and CO-630) measured at atmospheric pressure within a temperature range of T = (293.15, 303.12, 313.15, and 323.15) K. Furthermore, based on these experimental findings, we calculated the following derivative properties: excess molar volume, viscosity deviation, and isobaric thermal expansion coefficient. All binary mixtures studied here exhibited regular liquid behavior with attractive intermolecular forces because of the high association between alcohol and surfactant components.

show abstract

Section: Resultsmentioning

confidence: 98%

Effect of Temperature on Density and Viscosity for Methanol (1) + IGEPAL (2) (CO-720, CA-720, and CO-630) at Atmospheric Pressure

Dantas Medeiros,

Leal da Costa,

de Sá

et al. 2024

J. Chem. Eng. Data

View full text Add to dashboard Cite

show abstract

“…As previously mentioned, the CPA approach has been successfully applied by several authors for systems involving glycols. ,,,,,, The version of sCPA presented here has been developed over the past decade at the Hydrates, Flow Assurance & Phase Equilibria Research Group at Heriot-Watt University. Predictions for water/TEG were presented by Chapoy et al, while predictions for CH 4 /H 2 O are discussed in Chapoy et al Parameters for TEG are reproduced in Table , and an adjusted expression for parameter c 1 in eq is given by eq .…”

Section: Resultsmentioning

confidence: 99%

“…Despite the new advances, cubic equations of state (CEoS) are still a benchmarked standard, widely used in the oil and gas industry. Systems involving glycols, water, and hydrocarbons have been modeled with modified versions of the traditional SRK or PR CEoS by several authors. ,,− A general form of these models can be written as for which δ 1 = 1 and δ 2 = 0 for SRK or δ 1 = 1 + √2 and δ 2 = 1 – √2 for PR. In addition, the appropriate expression for a *( T ) is composition dependent and is related to the chosen approach as shown in Table .…”

Section: Thermodynamic Modelingmentioning

confidence: 99%

Phase Behavior in Natural Gas + Glycol Systems, Part 1: Tri(ethylene glycol) (TEG) and Its Aqueous Solutions

2021

Self Cite

View full text Add to dashboard Cite

Glycols and their aqueous solutions are extensively utilized in the natural gas industry as hydrate inhibitors and desiccant agents. An increasing interest in new applications, such as subsea processing and carbon capture and storage (CCS) gas dehydration, requires evaluations for operations at high pressure. New measurements are presented for methane and a natural gas mixture (methane−ethane−propane− carbon dioxide) in tri(ethylene glycol) (TEG) and TEG aqueous solutions. Solubility measurements were carried out at pressures up to 40 MPa for temperatures T = (273.15 and 353.65) K. Water content data covers temperatures between (278.15 and 313.15) K at p = (6 and 12.5) MPa. In addition, water activities in such solutions are also reported. The experimental data were modeled with three different approaches: the simplified cubic-plus-association (sCPA), a Huron−Vidal Soave−Redlich−Kwong (SRK) equation coupled with the Non-Random Two-Liquid (NRTL) Gibbs energy (g ex ) expression (SRK/HV/NRTL), and the non-density-dependent approach to Peng− Robinson (PR/NDD). The SRK/HV/NRTL model was found wanting for correlating experimental methane solubility data, while the PR/NDD and sCPA were successful in describing the methane/TEG phase behavior but not TEG aqueous solutions. An alternative approach that includes a binary interaction parameter dependent on the liquid phase composition (xk ij ) gave fair to satisfactorily results, particularly in the case of sCPA. For the multicomponent system, sCPA-xk ij has yielded more consistent predictions than PR/NDD-xk ij , especially for total gas solubility. Overall, all the models have failed to give satisfactory results based only on binary parameters.

show abstract

“…Among above flow assurance challenges, hydrates, wax deposition, asphaltenes, naphthenates and scales cause deposition in pipeline and these issues are the most significant areas being considered today due to exorbitantly higher cost of maintenance and troubleshooting during oil productions. Figure 2 shows solid depositions in pipeline responsible for flow assurance issue [2], [3]. Other issues such as slugging, corrosion, erosion and emulsions create operational issues during production.…”

Section: Problems Of Fluid Flow Assurancementioning

confidence: 99%

Flow assurance, simulation of wax deposition for Rawat field using PIPSIM software

Elhassan¹,

Hajo²

2022

World J. Adv. Eng. Technol. Sci.

View full text Add to dashboard Cite

One of the most relevant flow assurance issues in oil transportation is indeed the phenomena of wax deposition. Wax deposition occurs when the temperature along the pipeline falls below a point where it is described as Wax Appearance Temperature (WAT) The deposition may cause a lot of problems to the industry and definitely will involve expensive cause to overcome the problem. The flow system was built for Rawat field which is consists of (13) wells in the Rawat/Wateesh field. In this studies a series of cases were carried out at different flow rates, ambient temperature to study falling temperature through f pipline using PIPESIM Software and providing data from central petroleum laboratory and Rawat operating company. To check that temperature at all points along the flow line and trunk line is above the pour point and wax appearance temperature, check the requirement of heater, heat tracing and insulation for the pipelines more ever is used to studies the influence of changing flow rate, ambient temperature and water cut for pipeline temperature. The line size, line velocity and heat duty of the system have been calculated using excel program.The results show that the minimum temperature criteria for pipelines should be above 54C to avoid gelling of the fluid, Wax precipitation analysis results indicates that the minimum wax precipitation temperature for Wateesh W-was approximately 62°C and the same for Rawat RC-1 well were approximately 58°C.the flowlines size were determined 4” and 6” for trunk line.Also The results show that there is a direct relation between the wax deposition and temperature, It was observed that wax deposit increases with decreasing the temperature. On the other hand, an increase in flow rate results in a decrease in the wax deposition. Finally, hot insulation of the flow lines and trunk line was required, Electrical Heat Tracing to heat the fluid to 75 Deg, chemical injection such as wax inhibitors and pigging process to control the wax deposition.

show abstract

Solubility Measurement and Modeling of Methane in Methanol and Ethanol Aqueous Solutions

Cited by 16 publications

References 23 publications

Effect of Temperature on Density and Viscosity for Methanol (1) + IGEPAL (2) (CO-720, CA-720, and CO-630) at Atmospheric Pressure

Effect of Temperature on Density and Viscosity for Methanol (1) + IGEPAL (2) (CO-720, CA-720, and CO-630) at Atmospheric Pressure

Phase Behavior in Natural Gas + Glycol Systems, Part 1: Tri(ethylene glycol) (TEG) and Its Aqueous Solutions

Flow assurance, simulation of wax deposition for Rawat field using PIPSIM software

Contact Info

Product

Resources

About