发明名称 |
Method for purifying acrylic acid |
摘要 |
A method for purifying acrylic acid, which comprises carrying out dehydration distillation of an aqueous solution of acrylic acid by means of a dehydration column, wherein a distillation column having a theoretical plate number of at least 3 plates is used as the dehydration column, and the operational temperature of a site corresponding to the second theoretical plate is adjusted to be from 50 to 78° C.
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申请公布号 |
US6448438(B1) |
申请公布日期 |
2002.09.10 |
申请号 |
US20000493011 |
申请日期 |
2000.01.28 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
YADA SHUHEI;YAMAGISHI MASAHIKO;KASAMATSU KOUJI;SAKAKURA YASUYUKI;TAKAHASHI KIYOSHI |
分类号 |
C07C51/44;C07C57/07;(IPC1-7):C07C51/21;C07C51/235 |
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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