Dissociation Behaviors of CO 2 Hydrate-Bearing Sediment Particle during Settling in Water

Peng Li, Xuhui Zhang and Xiaobing Lu
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Peng Li: Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Xuhui Zhang: Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Xiaobing Lu: Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

Energies, 2018, vol. 11, issue 11, 1-12

Abstract: Dissociation processes of gas hydrate-bearing sediment particles in water flow condition were investigated. Experiments were carried out by observing a spherical CO 2 hydrate-bearing sediment (CHBS) particle settling in water. The release process of gas bubbles from CHBS particles was recorded by a high-speed camera and the total time of dissociation was obtained for different particle diameters and water temperatures. An intrinsic dissociation model was presented based on the assumption that the dissociation rate of the CHBS particle is exponential with the concentration of remaining hydrate. The model considered the influences of changing temperature, pressure and the particle concentration on the dissociation rate. The constants in the model were obtained based on fitting the experimental data. The presented model can reveal the dissociation behavior of the CHBS particle.

Keywords: CO 2 hydrate; dissociation rate constant; dissociation model; solid fluidization exploitation; gas bubbles (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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