Journal
FLUID PHASE EQUILIBRIA
Volume 225, Issue 1-2, Pages 141-144Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fluid.2004.08.032
Keywords
partition coefficient; vapor; hydrate; methane; ethane; tetrahydrofuran
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The vapor-hydrate equilibria were measured firstly for CH4 + C2H6 + water system beyond incipient conditions and the results showed that the partition coefficients of ethane between vapor and hydrate phase were not promising. And then the gas-hydrate equilibria were studied experimentally in detail for CH4 + C2H6 + tetrahydrofuran (THF) + water systems in the temperature range of 274.15-282.15 K, pressure range of 1.0-3.0 MPa and THF concentration range of 4-14 mol% in initial aqueous solution. The results demonstrated that the partition coefficient of ethane between vapor and hydrate phase increased dramatically because of the presence of THF in water, ethane was remarkably enriched in vapor phase instead of being slightly enriched in hydrate phase for CH4 + C2H6 + water system. (c) 2004 Elsevier B.V. All rights reserved.
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