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US 8,894,821 B2Granted
Dividing wall column for preparing high-purity 2 ethylhexyl-acrylate and preparation method using same
AssigneeLG Chem, Ltd.
InventorsSung Kyu Lee, Joon Ho Shin, Jong Ku Lee, Sung Kyun Kim
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Abstract
Disclosed is a dividing wall column for preparing high-purity 2-ethylhexyl-acrylate, and a method for distilling 2-ethylhexyl-acrylate. The dividing wall column provides an effect having two distillation columns through one distillation column, thereby having an effect of reducing energy compared to the conventional processing device in preparing high-purity 2-ethylhexyl-acrylate and an effect of reducing equipment costs of the device.
Claims10
A dividing wall column comprising a main column comprising:
- a condenser;
- a reboiler;
- and
- a dividing wall,
- wherein the main column is divided into a top zone, an upper inflow zone, an upper outflow zone, a lower inflow zone, a lower outflow zone, and a bottom zone, and comprises at least one inflow stream and at least three outflow streams,
- wherein the at least one inflow stream is a stream that a feed containing crude 2-ethylhexyl-acrylate flows into an inflow middle plate where the upper inflow zone and the lower inflow zone of the main column contact each other, and one or more of the outflow streams is a stream of 2-ethylhexyl-acrylate.
3 more elements
Dependencies are inferred from the claim text.