Tetrahydrofuran hydrate decomposition characteristics in porous media

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• 作者：Yongchen Song ; Pengfei Wang ; Shenglong Wang…
• 关键词：THF hydrate ; hydrate saturation ; hydrate dissociation rate ; porous media ; magnetic resonance imaging
• 刊名：Russian Journal of Physical Chemistry A, Focus on Chemistry
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：90
• 期：12
• 页码：2377-2382
• 全文大小：565 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Physical Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1531-863X
• 卷排序：90

文摘

Many tetrahydrofuran (THF) hydrate properties are similar to those of gas hydrates. In the present work THF hydrate dissociation in four types of porous media is studied. THF solution was cooled to 275.15 K with formation of the hydrate under ambient pressure, and then it dissociated under ambient conditions. THF hydrate dissociation experiments in each porous medium were conducted three times. Magnetic resonance imaging (MRI) was used to obtain images. Decomposition time, THF hydrate saturation and MRI mean intensity (MI) were measured and analyzed. The experimental results showed that the hydrate decomposition time in BZ-4 and BZ-3 was similar and longer than that in BZ-02. In each dissociation process, the hydrate decomposition time of the second and third cycles was shorter than that of the first cycle in BZ-4, BZ-3, and BZ-02. The relationship between THF hydrate saturation and time is almost linear.