Quantifying hydrate formation and kinetic inhibition

被引:198
作者
Sloan, ED [1 ]
Subramanian, S [1 ]
Matthews, PN [1 ]
Lederhos, JP [1 ]
Khokhar, AA [1 ]
机构
[1] Colorado Sch Mines, Ctr Hydrate Res, Golden, CO 80401 USA
关键词
D O I
10.1021/ie970902h
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
In the Prausnitz tradition, molecular and macroscopic evidence of hydrate formation and kinetic inhibition is presented. On the microscopic level, the first Raman spectra are presented for the formation of both uninhibited and inhibited methane hydrates with time. This method has the potential to provide a microscopic-based kinetics model. Three macroscopic aspects of natural gas hydrate kinetic inhibition are also reported: (1) The effect of hydrate dissociation residual structures was measured, which has application in decreasing the time required for subsequent formation. (2) The performance of a kinetic inhibitor (poly(N-vinylcaprolactam) or PVCap) was measured and correlated as a function of PVCap molecular weight and concentrations of PVCap, methanol, and salt in the aqueous phase. (3) Long-duration test results indicated that the use of PVCap can prevent pipeline blockage for a time exceeding the aqueous phase residence time in some gas pipelines.
引用
收藏
页码:3124 / 3132
页数:9
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