scholarly journals In-situ Raman and kinetic study on the methane hydrate formation and decomposition

2019 ◽  
Vol 158 ◽  
pp. 5615-5621 ◽  
Author(s):  
Seong Jun Cho ◽  
Truong Lam Son Hai ◽  
Ju Dong Lee
Keyword(s):  
Kinetic Study ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
In Situ Raman

Insights into the Kinetics of Methane Hydrate Formation in a Stirred Tank Reactor by In Situ Raman Spectroscopy

2015 ◽  
Vol 3 (9) ◽  
pp. 925-934 ◽  
Author(s):  
Jong Min Lee ◽  
Seong Jun Cho ◽  
Ju Dong Lee ◽  
Praveen Linga ◽  
Kyung Chan Kang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
Stirred Tank ◽  
In Situ Raman Spectroscopy ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
In Situ Raman ◽  
Kinetics Of

A kinetic study of methane hydrate formation in the corn Cobs + Tetrahydrofuran solution system

Fuel ◽  
2021 ◽  
Vol 302 ◽  
pp. 121143
Author(s):  
Yi-Song Yu ◽  
Qing-Zong Zhang ◽  
Chang-Chen ◽  
Qiu-Nan Lv ◽  
Shi-Dong Zhou ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
Solution System ◽  
Corn Cobs ◽  
Tetrahydrofuran Solution

A kinetic study of methane hydrate formation

1983 ◽  
Vol 38 (7) ◽  
pp. 1061-1072 ◽  
Author(s):  
A. Vysniauskas ◽  
P.R. Bishnoi
Keyword(s):  
Kinetic Study ◽  
Methane Hydrate ◽  
Hydrate Formation

Methane-Hydrate-Formation Processes in Methane/Water Bubbly Flows

SPE Journal ◽  
2016 ◽  
Vol 22 (03) ◽  
pp. 746-755 ◽  
Author(s):  
T.. Shimizu ◽  
Y.. Yamamoto ◽  
N.. Tenma
Keyword(s):  
Methane Hydrate ◽  
Hydrate Formation ◽  
Production Method ◽  
Gas Production ◽  
Bubbly Flows ◽  
Turbulent Shear ◽  
Formation Processes ◽  
Flow Loop ◽  
Offshore Production

Summary Offshore natural-gas production from methane-hydrate (MH) reservoirs has received considerable attention. In this study, the offshore production method is briefly described, followed by the flow loop experiments performed to investigate the formation processes of MH in methane-in-water bubbly flows. Transient processes of phase transformation are characterized by phase paths, flow morphologies, pump heads, and in-situ particle-size measurements. It is realized that an MH slurry is generated by MH shells covering unconverted bubbles, whereas it can be transformed into a colloidal flow with fine crystalline particles under an intense turbulent shear. This study suggests that, in practice, the flow pattern under MH formation would be determined by the phase path and the flow velocity in the pipeline, which is one of the important factors considered in the evaluation of flow-assurance risks.

scholarly journals Analysis of the Dissolution of CH4/CO2-Mixtures into Liquid Water and the Subsequent Hydrate Formation via In Situ Raman Spectroscopy

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 793
Author(s):  
Zheng Li ◽  
Christine C. Holzammer ◽  
Andreas S. Braeuer
Keyword(s):  
Raman Spectroscopy ◽  
Liquid Water ◽  
Separation Efficiency ◽  
Batch Reactor ◽  
Hydrate Formation ◽  
In Situ Raman Spectroscopy ◽  
Rich Phase ◽  
In Situ Raman ◽  
Carbon Dioxide Co2

We report an experimental study for the investigation into the suitability of hydrate formation processes for the purification of methane (CH4) from carbon dioxide (CO2) at a sub-cooling temperature of 6 K and a pressure of 4 MPa. The experiments were conducted in a stirred batch reactor. Three different initial CH4/CO2 mixtures with methane fractions of 70.1 mol%, 50.3 mol%, and 28.5 mol% were tested. The separation efficiency was quantified by measuring in situ via Raman spectroscopy the ratios of CH4/CO2 in the gas mixture, the liquid water-rich phase before hydrate formation, and the solid hydrate phase after the onset of the hydrate formation. The results indicated that the main separation effect is obtained due to the preferential dissolution of CO2 into the liquid water-rich phase before the onset of the hydrate formation.

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