发明授权
- 专利标题: Method of manufacturing (meth)acrylic acid
- 专利标题(中): 制造(甲基)丙烯酸的方法
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申请号: US09588834申请日: 2000-06-07
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公开(公告)号: US06525216B1公开(公告)日: 2003-02-25
- 发明人: Takeshi Nishimura , Yukihiro Matsumoto
- 申请人: Takeshi Nishimura , Yukihiro Matsumoto
- 优先权: JP11-163233 19990610
- 主分类号: C07C5142
- IPC分类号: C07C5142
摘要:
A method of manufacturing (meth)acrylic acid includes: a reaction step of carrying out a catalytic gas-phase oxidation reaction; an absorbing step of absorbing (meth)acrylic acid from a (meth)acrylic-acid-containing mixed gas prepared in the reaction step; a refinement step of separating, refining, and recovering (meth)acrylic acid from a (meth)acrylic-acid-containing liquid prepared in the absorbing step; and a recirculation step of recirculating (meth)acrylic acid contained in a vent gas produced in the refinement step to the absorbing step and/or the refinement step.