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Measurement for the Dissociation Conditions of Methane and Carbon Dioxide Hydrate in the Presence of Additive Materials

Published online by Cambridge University Press:  03 February 2016

Yan-Ping Chen ,
Li-Jen Chen ,
Shiang-Tai Lin  and
Muoi Tang
Yan-Ping Chen*
Affiliation:
Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
Li-Jen Chen
Affiliation:
Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
Shiang-Tai Lin
Affiliation:
Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
Muoi Tang
Affiliation:
Department of Chemical and Materials Engineering, Chinese Culture University, Taipei, Taiwan
*
*(Email: ypchen@ccms.ntu.edu.tw)
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Abstract

We report in this study the dissociation conditions for the carbon dioxide hydrate in the presence of additive materials. We measured the hydrate-water-vapor (H-Lw-V) three-phase equilibrium data using the isochoric method. Examples of these phase equilibrium data for the additive materials of 1,3,5-trioxane, 2,5-dihydrofuran, 1,3-dioxolane, and 3,4-dihydro-2H-pyran are presented. The experimental pressure range is from 1.6 to 3.3 MPa, and the concentration of each additive is at 10 wt%. The experimental results indicate that cyclic ethers of 1,3,5-trioxane, 2,5-dihydrofuran, and 1,3-dioxolane promote the formation of carbon dioxide hydrate. Their promotion effects at a given pressure are up to 5 K, 6.9 K, and 4.2 K, respectively, The additive material of 3,4-dihydro-2H-pyran, however, shows the inhibitor behavior. The average inhibition effect is about 1.3 K at a given pressure.

Keywords

additivesphase equilibriaenergy storage
Type
Articles
Information
MRS Advances , Volume 1 , Issue 15: Energy and Sustainability , 2016 , pp. 1013 - 1019
Copyright
Copyright © Materials Research Society 2016 

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References

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