| 发明名称 |
Method for purifying acrylic acid |
| 摘要 |
<p>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 DEG C. <IMAGE></p> |
| 申请公布号 |
EP1026145(A2) |
申请公布日期 |
2000.08.09 |
| 申请号 |
EP20000101441 |
申请日期 |
2000.01.25 |
| 申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
SHUHEI, YADA;MASAHIKO, YAMAGISHI;KOUJI, KASAMATSU;YASUYUKI, SAKAKURA;KIYOSHI, TAKAHASHI |
| 分类号 |
C07C51/44;C07C57/07;(IPC1-7):C07C57/04;C07C51/46 |
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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