Indexed by:期刊论文

Date of Publication:2016-12-01

Journal:RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A

Included Journals:SCIE、EI、Scopus

Volume:90

Issue:12

Page Number:2377-2382

ISSN No.:0036-0244

Key Words:THF hydrate; hydrate saturation; hydrate dissociation rate; porous media; magnetic resonance imaging

Abstract: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.