Premium
A study of hydrates in the methane‐propylene‐water system
Author(s) -
Otto Frederick D.,
Robinson Donald B.
Publication year - 1960
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690060419
Subject(s) - methane , hydrate , chemistry , hydrocarbon , clathrate hydrate , vapor pressure , phase equilibrium , vapour pressure of water , thermodynamics , water vapor , phase (matter) , analytical chemistry (journal) , inorganic chemistry , organic chemistry , physics
Experimental data are presented to show the points of incipient hydrate formation in the methane‐propylene‐water system. The addition of 1.4% propylene to methane lowered the equilibrium pressure 400 lb./sq. in. at 50°F. The locus of the four‐phase equilibrium consisting of hydrate, vapor, water‐rich liquid, and hydrocarbon‐rich liquid was determined. This was terminated by the appearance of a critical condition at 1,370 lb./sq. in. abs. and 69.3°F., where the vapor phase contained 34.8% propylene on a dry basis. Below this pressure the hydrate, vapor, water‐rich liquid equilibrium does not exist for solutions containing more than about 25% propylene. Solid‐vapor equilibrium ratios were estimated for propylene hydrates. The significant features of the phase diagrams for the system are discussed in some detail.