Distillative separation employing bottom additives

Patent · Mon Feb 15 23:00:00 EST 1988

OSTI ID:5129486

Ryan, J M; O'Brien, J V

In a method for the distillative separation, in a distillative column containing vapor-liquid contact devices, of a hydrocarbon-containing feed stream, this patent describes the method which comprises: (a) introducing the feed stream into a distillative column operating under defined conditions of pressure, temperature and feed composition; (b) withdrawing an overhead product stream enriched in at least one component to be removed from the feed stream; (c) condensing at least a portion of the overhead product stream in a condenser and recycling a portion of the condensed overhead stream to the top portion of the distillative column; (d) recovering a bottom product stream with defined specifications enriched with at least one defined component of the feed stream for which recovery is sought; and (e) reboiling at least a portion of the withdrawn bottom product stream and recycling a portion of the bottom stream to the bottom portion of the column.

• Assignee: Koch Process Systems, Inc., Westboro, MA
• Patent Number(s): US RE 32600
• OSTI ID: 5129486
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADDITIVES
ALKANES
DISTILLATION
DISTILLATION EQUIPMENT
EQUIPMENT
EVAPORATION
FLUID FLOW
FLUIDS
GASES
HYDROCARBONS
LIQUIDS
OPERATION
ORGANIC COMPOUNDS
PHASE TRANSFORMATIONS
RECYCLING
SEPARATION PROCESSES
TWO-PHASE FLOW
VAPOR CONDENSATION
VAPORS