Hydrate Equilibrium Conditions for Water, Diethylene Glycol Monoethyl Ether Acetate, and Methane

被引：5

作者：

Kida, Masato ^{[1
]}

Watanabe, Mizuho ^{[1
]}

Jin, Yusuke ^{[1
]}

Konno, Yoshihiro ^{[1
]}

Yoneda, Jun ^{[2
]}

Yamamoto, Koji ^{[3
]}

Nagao, Jiro ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Environm & Energy Dept, Methane Hydrate Prod Technol Res Grp, Toyohira Ku, 2-17-2-1 Tsukisamu Higashi, Sapporo, Hokkaido 0628517, Japan

[2] Natl Inst Adv Ind Sci & Technol, Environm & Energy Dept, Methane Hydrate Geomech Res Grp, 16-1 Onogawa, Tsukuba, Ibaraki 3058569, Japan

[3] Japan Oil Gas & Met Natl Corp JOGMEC, Mihama Ku, 1-2-2 Hamada, Chiba 2610025, Japan

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2016年 / 61卷 / 10期

关键词：

RESEARCH WELL PROGRAM; GAS; ADDITIVES; MIXTURES; STORAGE; ETHANE; SYSTEM; C-13; NMR;

D O I：

10.1021/acs.jced.6b00642

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This report describes the effects of diethylene glycol monoethyl ether acetate on the thermodynamic stability of methane hydrate. We measured the hydrate equilibrium conditions for water + diethylene glycol monoethyl ether acetate + methane at pressures (3.65 to 9.25) MPa and temperatures of (274.7 to 284.2) K. The addition of diethylene glycol monoethyl ether acetate into the water + methane system shifts the hydrate equilibrium conditions to a lower temperature and higher pressure region, suggesting that diethylene glycol monoethyl ether acetate plays a role of thermodynamic inhibitor for methane hydrate formation. Hydrate crystals formed in the system of water + diethylene glycol monoethyl ether acetate + methane show the same crystallographic characteristics as pure methane hydrate does. Furthermore, we demonstrate that contact with liquid diethylene glycol monoethyl ether acetate on methane hydrate promotes methane hydrate dissociation even if methane hydrate is in a thermodynamically stable condition.

引用

页码：3692 / 3697

页数：6

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