Research on CO2 Gas Separation utilizing Gas Hydrate Formation

2004 ◽  
Vol 2004 (0) ◽  
pp. 183-184
Author(s):  
Hajime Endou ◽  
Akiko Hirano ◽  
Masayuki Seko ◽  
Masahiro Ota
Keyword(s):  
Gas Separation ◽  
Gas Hydrate ◽  
Hydrate Formation ◽  
Co2 Gas ◽  
Gas Hydrate Formation

ChemInform Abstract: The Influence of SO2 and NO2 Impurities on CO2 Gas Hydrate Formation and Stability.

ChemInform ◽  
2011 ◽  
Vol 42 (28) ◽  
pp. no-no
Author(s):  
Bettina Beeskow-Strauch ◽  
Judith M. Schicks ◽  
Erik Spangenberg ◽  
Joerg Erzinger
Keyword(s):  
Gas Hydrate ◽  
Hydrate Formation ◽  
Co2 Gas ◽  
Gas Hydrate Formation

scholarly journals In situ monitoring of additives during CO2 gas hydrate formation

2016 ◽  
Vol 8 (30) ◽  
pp. 5897-5905 ◽  
Author(s):  
M. Schwenk ◽  
A. Katzir ◽  
B. Mizaikoff
Keyword(s):  
Gas Hydrate ◽  
Hydrate Formation ◽  
Evanescent Field ◽  
In Situ Monitoring ◽  
Mid Infrared ◽  
Co2 Gas ◽  
Field Spectroscopy ◽  
Gas Hydrate Formation

The combination of pressure/temperature traces with in situ mid-infrared fiberoptic evanescent field spectroscopy as advanced sensing concept for CO2 gas hydrate analysis.

scholarly journals Unexpected inhibition of CO2 gas hydrate formation in dilute TBAB solutions and the critical role of interfacial water structure

Fuel ◽  
2016 ◽  
Vol 185 ◽  
pp. 517-523 ◽  
Author(s):  
Ngoc N. Nguyen ◽  
Anh V. Nguyen ◽  
Khoi T. Nguyen ◽  
Llew Rintoul ◽  
Liem X. Dang
Keyword(s):  
Gas Hydrate ◽  
Critical Role ◽  
Hydrate Formation ◽  
Water Structure ◽  
Interfacial Water ◽  
Co2 Gas ◽  
Gas Hydrate Formation ◽  
Interfacial Water Structure

HFC-134a Hydrate Formation Kinetics during Continuous Gas Hydrate Formation with a Kenics Static Mixer for Gas Separation

2010 ◽  
Vol 49 (5) ◽  
pp. 2525-2532 ◽  
Author(s):  
Hideo Tajima ◽  
Toru Nagata ◽  
Yutaka Abe ◽  
Akihiro Yamasaki ◽  
Fumio Kiyono ◽  
...  
Keyword(s):  
Gas Separation ◽  
Gas Hydrate ◽  
Hydrate Formation ◽  
Static Mixer ◽  
Formation Kinetics ◽  
Hfc 134A ◽  
Gas Hydrate Formation

scholarly journals Understanding the Pathway of Gas Hydrate Formation with Porous Materials for Enhanced Gas Separation

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Jia Liu ◽  
Yajuan Wei ◽  
Wei Meng ◽  
Pei-Zhou Li ◽  
Yanli Zhao ◽  
...  
Keyword(s):  
Porous Materials ◽  
Gas Separation ◽  
Gas Hydrate ◽  
Density Functional ◽  
Hydrate Formation ◽  
Density Functional Theory Calculations ◽  
Carbon Surface ◽  
Gas Condensation ◽  
Gas Hydrate Formation ◽  
Formation Behavior

The reason that the stoichiometry of gas to water in artificial gas hydrates formed on porous materials is much higher than that in nature is still ambiguous. Fortunately, based on our experimental thermodynamic and kinetic study on the gas hydrate formation behavior with classic ordered mesoporous carbon CMK-3 and irregular porous activated carbon combined with density functional theory calculations, we discover a microscopic pathway of the gas hydrate formation on porous materials. Two interesting processes including (I) the replacement of water adsorbed on the carbon surface by gas and (II) further replacement of water in the pore by gas accompanied with the gas condensation in the pore and growth of gas hydrate crystals out of the pore were deduced. As a result, a great enhancement of the selectivity and regeneration for gas separation was achieved by controlling the gas hydrate formation behavior accurately.

Thermodynamic Modelling of Gas Hydrate Formation in the Presence of Inhibitors and the Consideration of their Effect

2014 ◽  
Vol 14 (1) ◽  
pp. 45
Author(s):  
Peyman Sabzi ◽  
Saheb Noroozi
Keyword(s):  
Gas Hydrates ◽  
Gas Hydrate ◽  
Low Temperatures ◽  
Hydrate Formation ◽  
Transportation Systems ◽  
Flow Lines ◽  
Main Approach ◽  
Efficient Inhibitor ◽  
System A ◽  
Gas Hydrate Formation

Gas hydrates formation is considered as one the greatest obstacles in gas transportation systems. Problems related to gas hydrate formation is more severe when dealing with transportation at low temperatures of deep water. In order to avoid formation of Gas hydrates, different inhibitors are used. Methanol is one of the most common and economically efficient inhibitor. Adding methanol to the flow lines, changes the thermodynamic equilibrium situation of the system. In order to predict these changes in thermodynamic behavior of the system, a series of modelings are performed using Matlab software in this paper. The main approach in this modeling is on the basis of Van der Waals and Plateau's thermodynamic approach. The obtained results of a system containing water, Methane and Methanol showed that hydrate formation pressure increases due to the increase of inhibitor amount in constant temperature and this increase is more in higher temperatures. Furthermore, these results were in harmony with the available empirical data.Keywords: Gas hydrates, thermodynamic inhibitor, modelling, pipeline blockage

Natural Gas Hydrate Formation Using Saline/Seawater for Gas Storage Application

2021 ◽  
Vol 35 (7) ◽  
pp. 5988-6002 ◽  
Author(s):  
Hari Prakash Veluswamy ◽  
Praveen Linga
Keyword(s):  
Natural Gas ◽  
Gas Hydrate ◽  
Hydrate Formation ◽  
Gas Storage ◽  
Natural Gas Hydrate ◽  
Gas Hydrate Formation

scholarly journals Rapid Gas Hydrate Formation—Evaluation of Three Reactor Concepts and Feasibility Study

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3615
Author(s):  
Florian Filarsky ◽  
Julian Wieser ◽  
Heyko Juergen Schultz
Keyword(s):  
Gas Hydrates ◽  
Gas Hydrate ◽  
Hydrate Formation ◽  
Synthetic Natural Gas ◽  
Operation Conditions ◽  
Gas Hydrate Formation ◽  
Gas Conditioning ◽  
And Storage ◽  
Economic Considerations ◽  
High Storage

Gas hydrates show great potential with regard to various technical applications, such as gas conditioning, separation and storage. Hence, there has been an increased interest in applied gas hydrate research worldwide in recent years. This paper describes the development of an energetically promising, highly attractive rapid gas hydrate production process that enables the instantaneous conditioning and storage of gases in the form of solid hydrates, as an alternative to costly established processes, such as, for example, cryogenic demethanization. In the first step of the investigations, three different reactor concepts for rapid hydrate formation were evaluated. It could be shown that coupled spraying with stirring provided the fastest hydrate formation and highest gas uptakes in the hydrate phase. In the second step, extensive experimental series were executed, using various different gas compositions on the example of synthetic natural gas mixtures containing methane, ethane and propane. Methane is eliminated from the gas phase and stored in gas hydrates. The experiments were conducted under moderate conditions (8 bar(g), 9–14 °C), using tetrahydrofuran as a thermodynamic promoter in a stoichiometric concentration of 5.56 mole%. High storage capacities, formation rates and separation efficiencies were achieved at moderate operation conditions supported by rough economic considerations, successfully showing the feasibility of this innovative concept. An adapted McCabe-Thiele diagram was created to approximately determine the necessary theoretical separation stage numbers for high purity gas separation requirements.

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