Mineral oils: processes and products – Fractionation – Distillation
Patent
1986-01-06
1987-12-22
Sneed, Helen M. S.
Mineral oils: processes and products
Fractionation
Distillation
196127, 202158, 202162, B01D 330
Patent
active
047145420
ABSTRACT:
The present invention is a distillation vapor and feed mixing and subsequent separation process and apparatus involving the introduction of a vaporizing liquid feed into a flash zone via a tangential nozzle into a mixing and separation chamber which directs the feed into a circumferential path to enhance mixing, and the redirection of rising vapors from the distillation below the flash zone by baffling these vapors into the chamber inlet. The rising vapors are inspirated by the high velocity feed at the inlet side of the chamber and intimate contact and mixing of the rising vapors with the vaporizing feed are enhanced by creating a spinning action. Preferably, the chamber runs peripherally and slightly downward along the inside wall of the distillation column along an arc no greater than 360.degree.. Alternatively, the mixing section of the mixing and separation chamber may be located outside of the distillation tower and the feed, passing through a jet ejector would inspirate the rising vapors. Increasing contacting and mixing efficiency in a distillation flash zone increases the yield of more valuable overhead product for the same energy input or permits lower energy input for constant separation between overheads and bottoms in the flash zone.
REFERENCES:
patent: 2235329 (1941-03-01), Ocon
patent: 3133014 (1964-05-01), Cross, Jr.
patent: 3544428 (1970-12-01), Mellbom
Caldarola Glenn
Encon Associates Inc.
Glynn Kenneth P.
Sneed Helen M. S.
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