Experimental study of separation of ammonia synthesis vent gas by hydrate formation

Termodynamic data on methane hydrate formation in the presence of ammonia are very important for upgrading of ammonia synthesis vent gas using hydrate formation. This paper is focused on the formation conditions of methane hydrate in the presence of ammonia and the effects of gas-liquid ratio and te...

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Bibliographic Details
Published in:Petroleum science 2009-06, Vol.6 (2), p.188-193
Main Authors: Dong, Taibin, Wang, Leiyan, Liu, Aixian, Guo, Xuqiang, Ma, Qinglan, Li, Guowen, Sun, Qiang
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Economics and Management
Energy Policy
Industrial and Production Engineering
Industrial Chemistry/Chemical Engineering
Mineral Resources
合成氨
天然气水合物
氨尾气
水合物形成
液体温度
甲烷水合物
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Summary:Termodynamic data on methane hydrate formation in the presence of ammonia are very important for upgrading of ammonia synthesis vent gas using hydrate formation. This paper is focused on the formation conditions of methane hydrate in the presence of ammonia and the effects of gas-liquid ratio and temperature on the separation of vent gas by hydrate formation. Equilibrium data for methane hydrate within an ammonia mole concentration range from 1% to 5 % were obtained. The experimental results indicated that ammonia has an inhibitive effect on hydrate formation. The higher the ammonia concentration, the higher is the pressure reguired for methane hydrate formation would be. The primary experimental results showed that when volume ratio of gas to liquid was 80：1 and temperature was 283.15 K, total mole fraction of （H2＋N2） in gas phase could reach 96.9 %.
ISSN:1672-5107
1995-8226
DOI:10.1007/s12182-009-0030-z