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

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• 作者：Taibin Dong (1)
  Leiyan Wang (1)
  Aixian Liu (1)
  Xuqiang Guo (1)
  Qinglan Ma (1)
  Guowen Li (1)
  Qiang Sun (1)
  
• 关键词：CH4 hydrate ; ammonia ; THF ; thermodynamics ; separation
• 刊名：Petroleum Science
• 出版年：2009
• 出版时间：June 2009
• 年：2009
• 卷：6
• 期：2
• 页码：188-193
• 全文大小：242KB
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• 作者单位：Taibin Dong (1)
  Leiyan Wang (1)
  Aixian Liu (1)
  Xuqiang Guo (1)
  Qinglan Ma (1)
  Guowen Li (1)
  Qiang Sun (1)
  
  1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
  
• ISSN：1995-8226

文摘

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 %.