发明名称 |
Method for the continuous extraction of ( meth) acrylic acid |
摘要 |
A process for the continuous recovery of (meth)acrylic acid from the reaction gas of a catalytic gas-phase oxidation comprising the following process stages is proposed: I quenching of the reaction gas by evaporative cooling using a high-boiling solvent, II separation of the (meth)acrylic acid from the quenched reaction gas by absorption into the high-boiling solvent, III separation of the solvent laden with (meth)acrylic acid by rectification into a first part-stream IIIA), which contains predominantly (meth)acrylic acid, and into a second part-stream IIIB) which contains predominantly the solvent, IV recycling of the stream IIIB) to process stage II and V distillative production of (meth)acrylic acid from stream IIIA), all liquid residual streams obtained in process stage V being recycled to process stage I.
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申请公布号 |
US2004116736(A1) |
申请公布日期 |
2004.06.17 |
申请号 |
US20030473102 |
申请日期 |
2003.09.29 |
申请人 |
MACHHAMMER OTTO;ADAMI CHRISTOPH;HECHLER CLAUS;SCHRODER JURGEN;SCHLIEPHAKE VOLKER;THIEL JOACHIM;DIEHL VOLKER |
发明人 |
MACHHAMMER OTTO;ADAMI CHRISTOPH;HECHLER CLAUS;SCHRODER JURGEN;SCHLIEPHAKE VOLKER;THIEL JOACHIM;DIEHL VOLKER |
分类号 |
C07C51/44;C07C51/48;C07C57/05;C07C57/07;(IPC1-7):C07C51/16;C07C51/42 |
主分类号 |
C07C51/44 |
代理机构 |
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