Process for debottlenecking a system for the separation of a...

Details Process for debottlenecking a system for the separation of a... Process for debottlenecking a system for the separation of a...

2007-04-18

2011-12-20

Smith, Duane (Department: 1771)

Distillation: processes, separatory

Flash vaporization of distilland

C203S050000, C203S057000, C203S059000, C203S071000, C203S008000

Reexamination Certificate

active

08080140

ABSTRACT:
A process for debottlenecking a system for the separation of a conjugated diolefin the system including a first extraction section having an extractive distillation column and a stripping column and a second extraction section. The process includes the steps of withdrawing a first portion of an extract from the extractive distillation column, the extract having at least the first portion and a second portion, and transferring the first portion of the extract to a flash/separation vessel; separating the first portion of the extract into a vapor phase and a liquid phase by flashing in a flash/separation vessel; and combining the liquid phase of the separated first portion of the extract with the second portion of the extract to produce an extract feed for further processing. A system and process for the separation of a conjugated diolefin from a C4- or C5-hydrocarbon mixture containing the conjugated diolefin and higher acetylenes are also provided.

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