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V. V. Koryakina, N. S. Gorokhova
Distribution of water droplets in oil
emulsions before and after hydrate formation
Abstract
The changes in the dispersion of inverse
emulsions of oil, as well as their stability during the formation/decomposition
of natural gas hydrates were studied in the work. It was established that in
the cycle of formation/decomposition of natural gas hydrates, coalescence of
the aqueous phase occurs in oil emulsions, containing more than 60wt.% of
water, with subsequent average diameter enlarging of droplets by 12–28%. It was
shown that water-in-oil emulsions lose their stability with the subsequent
separation into continuous phases in both the processes of hydrate formation
and freezing. The separation efficiency of emulsions with water cuts less than
40 wt.% during hydrate formation process is higher than in the
freezing/thawing.
Key words: oil emulsion, emulsion
separation, dispersion of emulsions, natural gas hydrate, hydrate formation.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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