发明名称 |
Separation of (meth)acrylic acid from the reaction gas mixture formed in the catalytic gas phase oxidation of C3/C4 compounds |
摘要 |
A process for the separation of (meth)acrylic acid from the reaction gas mixture formed in the catalytic gas phase oxidation by countercurrent absorption using a high-boiling inert hydrophobic organic liquid, in which the reaction gas mixture is passed through an absorption column countercurrently to the descending high-boiling inert hydrophobic organic liquid and (meth)acrylic acid is subsequently fractionally separated from the liquid effluent leaving the absorption column and containing (meth)acrylic acid, wherein a rectifying process is superimposed on the absorption process occurring naturally in the absorption column by removing a quantity of energy from the absorption column which exceeds its natural energy loss resulting from contact with the ambient atmosphere.
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申请公布号 |
US5780679(A) |
申请公布日期 |
1998.07.14 |
申请号 |
US19950541425 |
申请日期 |
1995.10.10 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
EGLY, HORST;DIEHL, VOLKER;JOERG, KLAUS |
分类号 |
C07C57/05;C07C51/42;C07C51/48;C07C57/07;(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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