能源化学(英文版)

能源化学(英文) ›› 2011, Vol. 20 ›› Issue (6): 647-653.DOI: 10.1016/S1003-9953(10)60254-X

• Articles • 上一篇    下一篇

Effect of temperature fluctuation on hydrate-based CO2 separation from fuel gas

Xiaosen Li1,2*, Chungang Xu1,2,3, Zhaoyang Chen1,2, Huijie Wu1,2, Jing Cai1,2,3   

  1. 1. Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China; 2. Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China; 3. Graduate University of Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2011-06-30 修回日期:2011-08-23 出版日期:2011-11-20 发布日期:2011-11-18
  • 通讯作者: 李小森

Effect of temperature fluctuation on hydrate-based CO2 separation from fuel gas

Xiaosen Li1,2*, Chungang Xu1,2,3, Zhaoyang Chen1,2, Huijie Wu1,2, Jing Cai1,2,3   

  1. 1. Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China; 2. Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China; 3. Graduate University of Chinese Academy of Sciences, Beijing 100083, China
  • Received:2011-06-30 Revised:2011-08-23 Online:2011-11-20 Published:2011-11-18
  • Contact: Xiao-Sen LI

摘要： A new method of temperature fluctuation is proposed to promote the process of hydrate-based CO2 separation from fuel gas in this work according to the dual nature of CO2 solubility in hydrate forming and non-hydrate forming regions [1]. The temperature fluctuation operated in the process of hydrate formation improves the formation of gas hydrate observably. The amount of the gas consumed with temperature fluctuation is approximately 35% more than that without temperature fluctuation. It is found that only the temperature fluctuation operated in the period of forming hydrate leads to a good effect on CO2 separation. Meanwhile, with the proceeding of hydrate formation, the effect of temperature fluctuation on the gas hydrate gradually reduces, and little effect is left in the completion term. The CO2 separation efficiencies in the separation processes with the effective temperature fluctuations are improved remarkably.

关键词: gas hydrate, CO2, fuel gas, temperature fluctuation

Abstract: A new method of temperature fluctuation is proposed to promote the process of hydrate-based CO2 separation from fuel gas in this work according to the dual nature of CO2 solubility in hydrate forming and non-hydrate forming regions [1]. The temperature fluctuation operated in the process of hydrate formation improves the formation of gas hydrate observably. The amount of the gas consumed with temperature fluctuation is approximately 35% more than that without temperature fluctuation. It is found that only the temperature fluctuation operated in the period of forming hydrate leads to a good effect on CO2 separation. Meanwhile, with the proceeding of hydrate formation, the effect of temperature fluctuation on the gas hydrate gradually reduces, and little effect is left in the completion term. The CO2 separation efficiencies in the separation processes with the effective temperature fluctuations are improved remarkably.

Key words: gas hydrate, CO2, fuel gas, temperature fluctuation