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Hydrate Management in Practice

16-10-2014 | Keijo Kinnari; Jan Hundseid; Xiaoyun Li; Kjell Magne Askvik, Journal of Chemical & Engineering Data, 2014

This paper describes the hydrate management strategies in Statoil’s gas and oil production systems. Hydrate management is a risk based approach allowing operations within the hydrate domain when the risk for hydrate plugging is concluded to be low. This is in sharp contrast to the hydrate ...

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Liquid Phase Equilibria of the Water + Acetic Acid + Dimethyl Carbonate Ternary System at Several Temperatures

15-10-2014 | Erol İnce; Melisa Lalikoglu; Dana Constantinescu, Journal of Chemical & Engineering Data, 2014

Liquid–liquid equilibria (LLE) of water + acetic acid + dimethyl carbonate were experimentally specified at (298.2, 308.2, and 318.2) K. Each diagram was obtained through specifying binodal curves and tie-lines. The reliability of the experimental tie-line data was calculated by the Othmer–Tobias ...

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Determination of the Critical Properties of C6–C10 n-Alkanes and Their Binary Systems Using a Flow Apparatus

13-10-2014 | Yang Liu; Ying Zhang; Mao-gang He; Nan Xin, Journal of Chemical & Engineering Data, 2014

A flow apparatus was established to measure the critical properties of pure components and mixtures. The critical points are visually determined by observing the critical opalescence. The measurement can be carried out up to 10 MPa for pressure and 773 K for temperature. Critical temperatures ...

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Design Options for Avoiding Hydrates in Deep Offshore Production

10-10-2014 | Carlos A. B. R. Cardoso; Marcelo A. L. Gonçalves; Ricardo M. T. Camargo, Journal of Chemical & Engineering Data, 2014

Hydrate blockage in subsea systems is responsible for a portion of lost profits in several deepwater oil fields. This problem tends to worsen in the fields recently discovered in Brazilian Pre-Salt layer due to greater water depth, higher pressure, lower temperature, and oil more prone to ...

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Solubility of Ibuprofen Sodium Dihydrate in Acetone + Water Mixtures: Experimental Measurement and Thermodynamic Modeling

09-10-2014 | Weiqiang Dun; Songgu Wu; Weiwei Tang; Xuemei Wang; Dengqiong Sun; Shichao Du; Junbo Gong, Journal of Chemical & Engineering Data, 2014

The solubility of ibuprofen sodium dihydrate (ISD) in acetone + water mixtures was measured by the gravimetric method at temperatures ranging from (279.55 to 312.05) K. The measured solubilities were correlated by the modified Apelblat equation, the λh (Buchowski) equation, the van’t Hoff model, ...

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Antiagglomerant Hydrate Inhibitors: The Link between Hydrate-Philic Surfactant Behavior and Inhibition Performance

08-10-2014 | Sahana K. Nagappayya; Rebecca M. Lucente-Schultz; V. Mark Nace; Vickie M. Ho, Journal of Chemical & Engineering Data, 2014

The application of antiagglomerant hydrate inhibitors (AAs) is becoming more important as advancing technology allows access to petroleum reserves with extreme conditions including high pressures, high temperatures, sour reservoirs, and arctic climates. Application of thermodynamic hydrate ...

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The Combined Effect of Thermodynamic Promoters Tetrahydrofuran and Cyclopentane on the Kinetics of Flue Gas Hydrate Formation

08-10-2014 | Nagu Daraboina; Nicolas von Solms, Journal of Chemical & Engineering Data, 2014

Carbon dioxide (CO2) capture through hydrate crystallization is a promising method among the new approaches for mitigating carbon emissions into the atmosphere. In this work, we investigate a combination of tetrahydrofuran (THF) and cyclopentane (CP) on the kinetics of flue gas (CO2:20 mol %/N2) ...

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Liquid–Liquid Equilibria for the Systems: Heptane + Benzene + Solvent (Propylene carbonate, N,N-Dimethylformamide, or Mixtures) at Temperatures from (303.2 to 323.2) K

07-10-2014 | Jing-jing Li; Qian-shu Zhao; Xiao-dong Tang; Kun-liang Xiao; Jiao-yang Yuan, Journal of Chemical & Engineering Data, 2014

The extraction of benzene from heptane by the solvents such as N,N-dimethylformamide (DMF), propylene carbonate, and complex solvent (DMF + propylene carbonate) were researched. The liquid–liquid equilibrium (LLE) data were experimentally obtained for the ternary systems heptane + benzene + DMF ...

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Experimental and Computational Studies of Choline Chloride-Based Deep Eutectic Solvents

07-10-2014 | Sasha L. Perkins; Paul Painter; Coray M. Colina, Journal of Chemical & Engineering Data, 2014

Choline-chloride based deep eutectic solvents (DES) have been used for several different applications (e.g., solubility, electrochemistry, and purifications) due to their relative inexpensive and readily available nature. In this work, three choline chloride-based DESs are simulated using ...

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Thermodynamic Properties of Ternary Liquid Mixtures Containing o-Chlorotoluene: Excess Molar Volumes and Excess Isentropic Compressibilities

07-10-2014 | V. K. Sharma; Rajni Dua; D. Sharma, Journal of Chemical & Engineering Data, 2014

Densities and speeds of sound of ternary o-chlorotoluene (1) + tetrahydropyran (2) + benzene or toluene or o-xylene (3) mixtures and their sub-binaries o-chlorotoluene (1) + toluene or o-xylene (2) at (298.15, 303.15, and 308.15) K have been measured, and of tetrahydropyran (1) + benzene or ...

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