发明名称 |
METHOD FOR RECOVERING ACRYLIC ACID |
摘要 |
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. |
申请公布号 |
EP1740526(A4) |
申请公布日期 |
2008.04.16 |
申请号 |
EP20050740834 |
申请日期 |
2005.04.26 |
申请人 |
LG CHEMICAL LIMITED |
发明人 |
KANG, SEONG-PIL;CHOI, SEOK-HWAN;HA, KYOUNG-SU;KO, JUN-SEOK;WOO, BOO-GON;KIM, YOUNG-BAE |
分类号 |
C07C51/44;C07C51/42;C07C51/487 |
主分类号 |
C07C51/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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