Phase Equilibrium Data of Methane Hydrate in the Aqueous Solutions of Additive Mixtures (THF plus TBAC)

In this work, the phase equilibrium data of methane hydrate in tetrahydrofuran (THF) and tetra-n-butylammonium chloride (TBAC) mixed aqueous solutions were investigated in the temperature range of (279.6 to 301.5) K and pressure range of (3.74 to 11.62) MPa. The measurements were carried out at mass...

Full description

Bibliographic Details
Published in:Journal of Chemical & Engineering Data
Main Authors: Wu, Wen-Zhi, Guan, Jin-An, Shen, Xiao-Dong, Shi, Ling-Li, Long, Zhen, Zhou, Xue-Bing, Liang, De-Qing
Format: Report
Language:English
Published: AMER CHEMICAL SOC 2016
Subjects:
NATURAL-GAS HYDRATE
QUATERNARY AMMONIUM-SALTS
N-BUTYLAMMONIUM CHLORIDE
CARBON-DIOXIDE
HYDROGEN STORAGE
TETRABUTYLAMMONIUM CHLORIDE
THERMODYNAMIC MODEL
ECONOMIC-EVALUATION
COLD-STORAGE
CO2 CAPTURE
Thermodynamics
Chemistry
Engineering
Multidisciplinary
Chemical
Methane hydrate
Online Access:http://ir.giec.ac.cn/handle/344007/13738
https://doi.org/10.1021/acs.jced.6b00405
Description
Summary:In this work, the phase equilibrium data of methane hydrate in tetrahydrofuran (THF) and tetra-n-butylammonium chloride (TBAC) mixed aqueous solutions were investigated in the temperature range of (279.6 to 301.5) K and pressure range of (3.74 to 11.62) MPa. The measurements were carried out at mass fraction of 0.019 THF with the mass fraction of 0.020, 0.050, 0.101, 0.201, and 0.340 TBAC, and 0.058 THF with 0.102, 0.202, and 0.340 TBAC. The phase equilibrium data were obtained by the isochoric pressure-search method. The results showed that the addition of THF + TBAC could remarkably increase the phase equilibrium temperatures compared to the equilibrium temperature of pure CH4 hydrate. However, the addition of THF + TBAC mixtures did not push the CH4 hydrates equilibrium temperature to a higher degree compared to the addition of single THF. In stabilizing hydrate crystals, the TBAC played a positive role when the concentration of THF was low, but a negative role when the concentration of THF became high.

Similar Items