Hydrate phase equilibrium for the (hydrogen plus tert-butylamine plus water) system

被引：24

作者：

Du, Jian-Wei ^{[1
,2
]}

Liang, De-Qing ^{[1
]}

Dai, Xing-Xue ^{[1
]}

Li, Dong-Liang ^{[1
]}

Li, Xin-Jun ^{[1
]}

机构：

[1] CAS, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China

[2] Chinese Acad Sci, China Grad Univ, Beijing 100049, Peoples R China

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2011年 / 43卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Binary hydrate; Tert-butylamine; Hydrogen; Equilibrium data; Hydrate phase behaviour; BINARY CLATHRATE HYDRATE; STABILITY; CLUSTERS; STORAGE;

D O I：

10.1016/j.jct.2010.11.018

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The three-phase equilibrium conditions of ternary (hydrogen + tert-butylamine + water) system were first measured under high-pressure in a "full view" sapphire cell. The tert-butylamine-hydrogen binary hydrate phase transition points were obtained through determining the points of intersection of three phases (H-L-w-V) to two phases (L-w-V) experimentally. Measurements were made using an isochoric method. Firstly, (tetrahydrofuran + hydrogen) binary hydrate phase equilibrium data were determined with this method and compared with the corresponding experimental data reported in the literatures and the acceptable agreements demonstrated the reliability of the experimental method used in this work. The experimental investigation on (tert-butylamine + hydrogen) binary hydrate phase equilibrium was then carried out within the temperature range of (268.4 to 274.7) K and in the pressure range of (9.54 to 29.95) MPa at (0.0556, 0.0886, 0.0975, and 0.13) mole fraction of tert-butylamine. The three-phase equilibrium curve (H + L-w + V) was found to be dependent on the concentration of tert-butylamine solution. Dissociation experimental results showed that tert-butylamine as a hydrate former shifted hydrate stability region to lower pressure and higher temperature. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：617 / 621

页数：5

共 23 条

[1] Phase relations and binary clathrate hydrate formation in the system H2-THF-H2O [J].