EXPERIMENTAL-STUDY ON THE EQUILIBRIUM ETHANE HYDRATE FORMATION CONDITIONS IN AQUEOUS-ELECTROLYTE SOLUTIONS

被引:75
作者
ENGLEZOS, P [1 ]
BISHNOI, PR [1 ]
机构
[1] UNIV CALGARY,DEPT CHEM & PETR ENGN,2500 UNIV DR NW,CALGARY T2N 1N4,ALBERTA,CANADA
关键词
D O I
10.1021/ie00055a038
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A new experimental apparatus for studying hydrate equilibria was designed and built. Its main component is a variable-volume high-pressure cell which is immersed in a temperature-controlled bath. The apparatus provides measurements that are reproducible and consistent with the measurements in other laboratories. Experimental equilibrium data for ethane hydrate formation in the presence of single- and mixed-electrolyte solutions of NaCl, KCl, CaCl2, and KBr were obtained by using this apparatus. Fifty experiments were performed at temperatures between 265.36 and 282.98 K. First, data on hydrate formation in pure water and in single-electrolyte solutions were obtained. Second, data on hydrate formation in four solutions of binary salt mixtures and a solution of the ternary salt mixture from NaCl, KCl, and CaCl2 were collected. Finally, a four-component aqueous solution was prepared and hydrate formation experiments were conducted. The experimental data were compared with the results based on theoretical calculations. The agreement between the data and the predictions was found to be excellent.
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收藏
页码:1655 / 1659
页数:5
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