Kinetic analysis of nano-SiO2 promoting methane hydrate formation in porous medium

2020 ◽  
Vol 79 ◽  
pp. 103375
Author(s):  
Zucheng Cheng ◽  
Yuechao Zhao ◽  
Weiguo Liu ◽  
Yu Liu ◽  
Lanlan Jiang ◽  
...  
Keyword(s):  
Porous Medium ◽  
Kinetic Analysis ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
Nano Sio2

Kinetic analysis of dual impellers on methane hydrate formation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sotirios Nik Longinos ◽  
Mahmut Parlaktuna
Keyword(s):  
Power Consumption ◽  
Kinetic Analysis ◽  
Induction Time ◽  
Methane Hydrate ◽  
Formation Rate ◽  
Hydrate Formation ◽  
Mixed Flow ◽  
Pitched Blade Turbine ◽  
Decline Rate

Abstract This study investigates the effects of types of impellers and baffles on methane hydrate formation. Induction time, water conversion to hydrates (hydrate yield), hydrate formation rate and hydrate productivity are components that were estimated. The initial hydrate formation rate is generally higher with the use of Ruston turbine (RT) with higher values 28.93 × 10−8 mol/s in RT/RT with full baffle (FB) experiment, but the decline rate of hydrate formation was also high compared to up-pumping pitched blade turbine (PBTU). Power consumption is higher also in RT/RT and PBT/RT with higher value 392,000 W in PBT/RT with no baffle (NB) experiment compared to PBT/PBT and RT/PBT experiments respectively. Induction time values are higher in RT/RT experiments compared to PBT/PBT ones. Hydrate yield is always smaller when there is no baffle in all four groups of experiments while the higher values exist in experiments with full baffle. It should be noticed that PBT is the same with PBTU, since all experiments with mixed flow have upward trending.

scholarly journals Numerical analysis of experimental studies of methane hydrate formation in a sandy porous medium

2018 ◽  
Vol 220 ◽  
pp. 681-704 ◽  
Author(s):  
Zhenyuan Yin ◽  
George Moridis ◽  
Hoon Kiang Tan ◽  
Praveen Linga
Keyword(s):  
Porous Medium ◽  
Numerical Analysis ◽  
Methane Hydrate ◽  
Experimental Studies ◽  
Hydrate Formation

scholarly journals Methane and Carbon Dioxide Hydrate Formation and Dissociation in Presence of a Pure Quartz Porous Framework Impregnated with CuSn12 Metallic Powder: An Experimental Report

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5115 ◽  
Author(s):  
Alberto Maria Gambelli ◽  
Giulia Stornelli ◽  
Andrea Di Schino ◽  
Federico Rossi
Keyword(s):  
Carbon Dioxide ◽  
Porous Medium ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
Metallic Powder ◽  
Equilibrium Curve ◽  
Hydrate Dissociation ◽  
Porous Framework ◽  
Made In ◽  
The Ideal

Hydrate formation and dissociation processes were carried out in the presence of a pure quartz porous medium impregnated with a metallic powder made with a CuSn12 alloy. Experiments were firstly made in the absence of that powder; then, different concentrations were added to the porous medium: 4.23 wt.%, 18.01 wt.%, and 30.66 wt.%. Then, the hydrate dissociation values were compared with those present in the literature. The porous medium was found to act as an inhibitor in the presence of carbon dioxide, while it did not alter methane hydrate, whose formation proceeded similarly to the ideal trend. The addition of CuSn12 promoted the process significantly. In particular, in concentrations of up to 18.01 wt.%, CO2 hydrate formed at milder conditions until it moved below the ideal equilibrium curve. For methane, the addition of 30.66 wt.% of powder significantly reduced the pressure required to form hydrate, but in every case, dissociation values remained below the ideal equilibrium curve.

scholarly journals Methane Hydrate Formation and Decomposition Properties During Gas Migration in Porous Medium

2017 ◽  
Vol 105 ◽  
pp. 4668-4673 ◽  
Author(s):  
Pengfei Wang ◽  
Shenglong Wang ◽  
Yongchen Song ◽  
Mingjun Yang
Keyword(s):  
Porous Medium ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
Gas Migration ◽  
Decomposition Properties
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