发明名称 |
Method for absorbing acrylic acid and method for purifying acrylic acid |
摘要 |
This invention concerns a method for absorbing acrylic acid, characterized by supplying an acrylic acid-containing reaction gas component obtained by the reaction of catalytic gas phase oxidation to an acrylic acid absorption column and advancing a high boiling inert hydrophobic organic liquid into counter-flow contact with said reaction gas in said acrylic acid absorption column with the mass flow rate of the organic liquid fixed in the range of 0.2-4.5 times the mass flow rate of the acrylic acid in the reaction gas thereby absorbing acrylic acid in said organic liquid and obtaining an acrylic acid-containing solution and a method for purifying acrylic acid, comprising a step for purifying the acrylic acid-containing organic liquid obtained by the step mentioned above. By this invention, a product of acrylic acid containing a low boiling substance at a low concentration can be produced.
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申请公布号 |
US6713648(B2) |
申请公布日期 |
2004.03.30 |
申请号 |
US20010780787 |
申请日期 |
2001.02.09 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
HIRAO HARUNORI;ISHII YOSHITAKE;MATSUMOTO YUKIHIRO;NISHIMURA TAKESHI |
分类号 |
C07C57/05;C07C51/42;C07C51/44;C07C51/48;(IPC1-7):C07C51/42 |
主分类号 |
C07C57/05 |
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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