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Fatty acid distillation—Comparison of two column types
Author(s) -
Williams F. C.,
Osburn J. O.
Publication year - 1949
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02651510
Subject(s) - myristic acid , distillation , stearic acid , chemistry , chromatography , pressure drop , packed bed , vapor pressure , bubble , palmitic acid , column (typography) , drop (telecommunication) , fractionating column , analytical chemistry (journal) , materials science , fatty acid , thermodynamics , organic chemistry , mechanics , mathematics , telecommunications , physics , connection (principal bundle) , computer science , geometry
ConclusionsVapor‐liquid equilibrium data are presented for the systems lauric acid‐myristic acid, myristic acid‐palmitic acid, and palmitic acid‐stearic acid at four mm. pressure. Deviations from Raoult's law are observed. The performance of a small glass column packed with fibrous glass was studied. The H.E.T.P. was 30 to 35 inches and showed no consistent variation with composition. Above a vapor velocity of about seven feet per second, the H.E.T.P. increased. The performance of a small bubble‐cap column was studied. The overall plate efficiency was about 35%. The allowable vapor velocity was between four and five feet per second. For the distillation of fatty acids at four mm. of Hg pressure the bubble‐cap column was more satisfactory than the packed column containing fibrous glass since the pressure drop per theoretical plate was about one‐fifth as great at comparable capacities. The comparison should be even more favorable to the bubble‐cap column with larger sizes.