Title:
DIVIDING WALL DISTILLATION COLUMN FOR PRODUCING HIGH PURITY ACRYLIC ACID AND FRACTIONAL DISTILLATION METHOD USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2010/107284
Kind Code:
A2
Abstract:
The present invention relates to a dividing wall distillation column for producing high purity acrylic acid and fractional distillation method using the same. More specifically, the present invention relates to a dividing wall distillation column comprising a main column provided with a condenser, a reboiler and a dividing wall, and fractional distillation method using same, characterized in that the main column is divided into a top section, an upper feed section, an upper discharge section, a lower feed section, a lower discharge section and a bottom section, a crude acrylic acid feed (F) is flown into a feed intermediate stage (NR1) in which the upper feed section is in contact with the lower feed section, a low boiling point component (D) is discharged from the top section, a high boiling point component (B) is discharged from the bottom section, a middle boiling point component (S) is discharged from a discharge intermediate stage (NR2) in which the upper discharge section is in contact with the lower discharge section, and the middle boiling point component is acrylic acid. The dividing wall distillation column of the present invention has the effect of two distillation columns with one distillation column. Therefore, the energy and the cost of equipment for producing high purity acrylic acid can be reduced compared with existing apparatus.
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Inventors:
LEE SUNG KYU (KR)
LEE JONG KU (KR)
SHIN JOON HO (KR)
LEE JONG KU (KR)
SHIN JOON HO (KR)
Application Number:
PCT/KR2010/001727
Publication Date:
September 23, 2010
Filing Date:
March 19, 2010
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
LEE SUNG KYU (KR)
LEE JONG KU (KR)
SHIN JOON HO (KR)
LEE SUNG KYU (KR)
LEE JONG KU (KR)
SHIN JOON HO (KR)
International Classes:
B01D3/32; C10G7/00
Foreign References:
| KR109647606B1 | ||||
| KR700006584B1 |
Other References:
See also references of EP 2409747A4
Attorney, Agent or Firm:
KIM, In Han et al. (KR)
김인한 (KR)
김인한 (KR)
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