发明名称 |
METHOD FOR PRODUCTION OF (METH)ACRYLIC ACID |
摘要 |
A method for producing acrylic acid by absorbing acrylic acid at a high ratio and obtaining an acrylic acid-containing solution of high concentration is provided. This method comprises a step of circulating part of a discharged gas from an absorption step of acrylic acid to the reactor and discarding the remainder to the out side of system while the gas is cooled before circulation to the reactor. By the method, the acrylic acid-containing solution of high concentration is obtained due to decrease of an acrylic acid loss. |
申请公布号 |
ZA200404244(B) |
申请公布日期 |
2005.05.25 |
申请号 |
ZA20040004244 |
申请日期 |
2004.05.31 |
申请人 |
NIPPON SHOKUBAI CO., LTD |
发明人 |
HARUNORI HIRAO;KOUJI UENO;NAOKI SERATA;TAKESHI YOKOGOSHIYA |
分类号 |
C07C;C07C51/16;B01D53/14;C07B61/00;C07C51/235;C07C51/25;C07C57/04;C07C57/05;C07C57/055 |
主分类号 |
C07C |
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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