Distillative separation employing bottom additives

Details Distillative separation employing bottom additives Distillative separation employing bottom additives

1985-02-22

1986-01-21

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 20, 62 28, F25J 304

Patent

active

RE0320684

ABSTRACT:
An improved method for the distillation of a feed stream containing hydrocarbon components, which method is directed toward the production of a bottom product stream and an overhead product stream, both with desired specifications, which method comprises recycling a minor portion of the bottom product stream typically, but not necessarily, derived from said separation directly to a reflux condenser for the overhead product stream of said method, in order to effect a savings in energy in said distillative method, such as by adjusting the column operating conditions, such as the column operating pressure or the top or bottom operating temperatures of said column.

REFERENCES:
patent: 3595782 (1971-07-01), Bucklin et al.
patent: 4035167 (1977-07-01), Starks

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