Dividing Wall Column for Alpha-Methylstyrene and Cumene Distillation
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United States of America Patent
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Issued Date -
Mar 21, 2013
app pub date -
Sep 18, 2012
filing date -
Sep 19, 2011
priority date (Note) -
Abandoned
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Abstract
Methods and systems for fractionating a crude alpha-methylstyrene (AMS) feed using one or more dividing wall columns are provided. The method can include introducing a crude AMS to a fractionation column, wherein the fractionation column contains a dividing wall disposed at least partially within the fractionation column such that an internal volume of the fractionation column is divided into at least a pre-fractionation section and a main fractionation section. The crude AMS can be introduced to the pre-fractionation section of the fractionation column. A light hydrocarbon can be withdrawn from the fractionation column at or proximal a first end thereof, a side-stream can be withdrawn from the main fractionation section of the fractionation column, and a heavy hydrocarbon can be withdrawn from the fractionation column at or proximal the second end thereof.
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