Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Seok Hwan Choi0
Kyoung Su Ha0
Young Bae Kim0
Seong Pil Kang0
Boo Gon Woo0
Jun Seok Ko0
Date of Patent
November 3, 2009
0Patent Application Number
111163670
Date Filed
April 28, 2005
0Patent Primary Examiner
Patent abstract
Disclosed is a simplified method for recovering acrylic acid from a mixture containing acrylic acid, acrylic acid dimer and impurities with high boiling point, in a stable and efficient manner. The method comprises the steps of: introducing the mixture into an acrylic acid recovering device comprising an acrylic distillation unit integrated with an acrylic acid dimer pyrolysis tank; carrying out decomposition of acrylic acid dimmer under reduced pressure and recovering acrylic acid. The method optionally further comprises a step of recycling a portion of the solution obtained from the bottom of the acrylic acid recovering device to the acrylic acid recovering device.
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