发明授权
- 专利标题： Method for the prevention of post oxidation of methacrolein
- 专利标题（中）： 防止甲基丙烯醛后氧化的方法
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申请号： US217849申请日： 1988-07-12
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公开(公告)号： US4968846A公开(公告)日： 1990-11-06
- 发明人: Morimasa Kuragano , Kozo Iwasaki , Yoshio Koyama , Takeshi Isobe , Hirozo Segawa , Katsuji Yoguchi
- 申请人： Morimasa Kuragano , Kozo Iwasaki , Yoshio Koyama , Takeshi Isobe , Hirozo Segawa , Katsuji Yoguchi
- 申请人地址： JPX Tokyo JPX Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Incorporated,Kyowa Gas Chemical Industry Company, Ltd.
- 当前专利权人： Mitsui Toatsu Chemicals, Incorporated,Kyowa Gas Chemical Industry Company, Ltd.
- 当前专利权人地址： JPX Tokyo JPX Tokyo
- 优先权： JPX62-183565 19870724
- 主分类号： C07C47/22
- IPC分类号： C07C47/22 ; B01J8/06 ; C07C45/00 ; C07C45/35 ; C07C45/37 ; C07C45/38 ; C07C45/78 ; C07C45/86 ; C07C67/00
摘要：
This invention provides a method for the prevention of oxidation of resulting methacrolein immediately after its discharge from a reaction tube upon production of the methacrolein by vapor-phase oxidation of isobutylene, tertiary butanol or methallyl alcohol with a molecular-oxygen-containing gas in the presence of a catalyst. An inert gas and/or recirculated reaction gas or a mixed gas of an inert gas and/or recirculated reaction gas and air is fed and mixed with a reaction product gas immediately after an outlet of the reaction tube.