Vacuum distillation process

Details Vacuum distillation process Vacuum distillation process

1990-02-09

1991-05-28

Manoharan, Virginia

Distillation: processes, separatory

Vaporization zone under positive pressure or vacuum

202205, 203DIG9, 203DIG25, 208366, B01D 310

Patent

active

050192191

ABSTRACT:
A feed which contains vapor and liquid is introduced into a distillation column operating at a subatmospheric pressure. Vapor is allowed to rise inside the distillation column and liquid is allowed to drop to the bottom part of the distillation column. From said bottom part a liquid is passed through a transfer conduit to an external collecting vessel from which a liquid stream is withdrawn. The liquid stream is cooled and part thereof is introduced into the transfer conduit.

REFERENCES:
patent: 2664391 (1953-12-01), Coulter
patent: 3334027 (1967-08-01), Goeldner
patent: 3480515 (1969-11-01), Goeldner
patent: 3749647 (1973-07-01), Micklewright
patent: 4166773 (1979-09-01), Higley et al.
patent: 4323431 (1982-04-01), Takashi et al.
patent: 4568428 (1980-02-01), Rigg et al.

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