Effects of Phase-Equilibrium Temperature and Pressure on the Thickness Decision of a Methane Hydrate Container

2007 ◽  
pp. 2782-2785
Author(s):  
Jae Hoon Lee ◽  
Hyo Kim ◽  
Song Chun Choi
Keyword(s):  
Phase Equilibrium ◽  
Methane Hydrate ◽  
Equilibrium Temperature ◽  
Temperature And Pressure

Effects of Phase-Equilibrium Temperature and Pressure on the Thickness Decision of a Methane Hydrate Container

2007 ◽  
Vol 353-358 ◽  
pp. 2782-2785 ◽  
Author(s):  
Jae Hoon Lee ◽  
Hyo Kim ◽  
Song Chun Choi
Keyword(s):  
Phase Equilibrium ◽  
Pressure Vessel ◽  
Methane Hydrate ◽  
Equilibrium Temperature ◽  
Division I ◽  
Process Equipment ◽  
Pure Methane ◽  
Section Viii ◽  
Temperature And Pressure ◽  
And Storage

The thickness of the process equipment increases in proportion to pressure for the methane hydrate transportation and storage. The pressure is one of the most important factors, because a material must be selected in the way of proper pressure and temperature to design the process equipment. Therefore, we tried to figure out whether the phase equilibrium temperature & pressure can be applied to the designed temperature and pressure or not, and carried out the thickness calculation of the pure methane hydrate container in accordance with “Boiler and Pressure Vessel Code - Division I of Section VIII, ASME”. Also, we studied on the effect of the container’s thickness using the results of the phase equilibrium temperature and pressure measurement including the inhibitor and promoter of the methane hydrate on some related references.

Occurrence of methane hydrate in saturated and unsaturated solutions of sodium chloride and water in dependence of temperature and pressure

AIChE Journal ◽  
1983 ◽  
Vol 29 (4) ◽  
pp. 651-657 ◽  
Author(s):  
J. L. De Roo ◽  
C. J. Peters ◽  
R. N. Lichtenthaler ◽  
G. A. M. Diepen
Keyword(s):  
Sodium Chloride ◽  
Methane Hydrate ◽  
Temperature And Pressure

Effect of Fulvic Acid and Sodium Chloride on the Phase Equilibrium of Methane Hydrate in Mixed Sand–Clay Sediment

2019 ◽  
Vol 64 (2) ◽  
pp. 632-639 ◽  
Author(s):  
Tao Lv ◽  
Xiaosen Li ◽  
Zhaoyang Chen ◽  
Chungang Xu ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Phase Equilibrium ◽  
Sodium Chloride ◽  
Fulvic Acid ◽  
Methane Hydrate ◽  
Clay Sediment

Effect of seawater ions on cyclopentane-methane hydrate phase equilibrium

2018 ◽  
Vol 458 ◽  
pp. 272-277 ◽  
Author(s):  
Qiunan Lv ◽  
Xueru Zang ◽  
Xiaosen Li ◽  
Gang Li
Keyword(s):  
Phase Equilibrium ◽  
Methane Hydrate ◽  
Hydrate Phase

scholarly journals Dissociation and Self-Preservation of Gas Hydrates in Permafrost

Geosciences ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 431 ◽  
Author(s):  
Evgeny Chuvilin ◽  
Boris Bukhanov ◽  
Dinara Davletshina ◽  
Sergey Grebenkin ◽  
Vladimir Istomin
Keyword(s):  
Phase Equilibrium ◽  
Gas Hydrates ◽  
Methane Hydrate ◽  
West Siberia ◽  
Gas Pressure ◽  
The Self ◽  
Frozen Soils ◽  
Long Time ◽  
Ice Content ◽  
Gas Bearing

Gases releasing from shallow permafrost above 150 m may contain methane produced by the dissociation of pore metastable gas hydrates, which can exist in permafrost due to self-preservation. In this study, special experiments were conducted to study the self-preservation kinetics. For this, sandy samples from gas-bearing permafrost horizons in West Siberia were first saturated with methane hydrate and frozen and then exposed to gas pressure drop below the triple-phase equilibrium in the “gas–gas hydrate–ice” system. The experimental results showed that methane hydrate could survive for a long time in frozen soils at temperatures of −5 to −7 °C at below-equilibrium pressures, thus evidencing the self-preservation effect. The self-preservation of gas hydrates in permafrost depends on its temperature, salinity, ice content, and gas pressure. Prolonged preservation of metastable relict hydrates is possible in ice-rich sandy permafrost at −4 to −5 °C or colder, with a salinity of <0.1% at depths below 20–30 m.

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