Distillation pressure control

Patent · Tue Sep 06 04:00:00 EDT 1988

OSTI ID:6501749

Hofferber, J A

This patent describes an apparatus comprising: a fractional distillation column; means for providing a feed mixture to be fractionated to the column; means for withdrawing an overhead vapor stream from the column; means for condensing at least a portion of the overhead vapor stream; an accumulator; means for passing the resulting at least partially condensed overhead stream into the accumulator; means for withdrawing condensate from the accumulator and for passing a first portion of the thus withdrawn condensate into an upper portion of the column as an external reflux therefore and for passing a second portion of the thus withdrawn condensate as an overhead liquid product stream; means for withdrawing a first vapor stream from the accumulator and for passing a first portion of the thus withdrawn vapor through a first control valve to a vapor recovery unit and for passing a second portion of the thus withdrawn vapor stream through a second control valve to a waste gas disposal unit; means for providing a second vapor stream from an external source to the column through a third control valve wherein the second vapor stream is compatible with the first vapor stream.

• Assignee: Phillips Petroleum Co., Bartlesville, OK
• Patent Number(s): US 4769056
• OSTI ID: 6501749
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ACCUMULATORS
CONTAINERS
CONTROL
CONTROL EQUIPMENT
DESIGN
DISTILLATION
DISTILLATION EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FOSSIL FUELS
FRACTIONATION
FUELS
PETROLEUM
PRESSURE CONTROL
SEPARATION PROCESSES
TANKS
VALVES