发明名称 |
PROCESS FOR PREPARING METHYLMERCAPTOPROPIONALDEHYDE |
摘要 |
A process for preparing methylmercaptopropionaldehyde in a single reaction unit, is provided. According to the preferred embodiment, the process comprises, simultaneously contacting a gaseous mixture comprising acrolein with a liquid mixture comprising methylmercaptopropionaldehyde, methyl mercaptan, a catalyst and methylmercaptopropionaldehyde methyl thiohemiacetal in the reactive absorber; absorbing the acrolein from the gaseous mixture into the liquid mixture; reacting the absorbed acrolein with the methyl mercaptan or the methylmercaptopropionaldehyde methyl thiohemiacetal to obtain methylmercapto-propionaldehyde; removing gaseous impurities and by-products from the liquid mixture; and separating the obtained methylmercaptopropionaldehyde product from the reactive absorber, directing a portion of the separated product to storage or further processing and recycling the remaining portion to the reactive absorber; wherein the methyl mercaptan optionally comprises dimethyl sulfide or dimethyl ether. |
申请公布号 |
EP2658842(A1) |
申请公布日期 |
2013.11.06 |
申请号 |
EP20110802046 |
申请日期 |
2011.12.15 |
申请人 |
EVONIK DEGUSSA GMBH |
发明人 |
FINKELDEI, CASPAR HEINRICH;ZACCHI, PABLO;FONFE, BENJAMIN;KRETZ, STEPHAN;KOERFER, MARTIN;HASSELBACH, HANS JOACHIM;BOECK, WOLFGANG |
分类号 |
C07C319/16;C07C323/52 |
主分类号 |
C07C319/16 |
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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