发明名称 |
Method for producing maleic acid anhydride |
摘要 |
In a process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of hydrocarbons having at least four carbon atoms using oxygen-containing gases in the presence of a volatile phosphorus compound over a catalyst comprising vanadium, phosphorus and oxygen in a shell-and-tube reactor unit having at least two successive cooled reaction zones, the temperature of the first reaction zone is from 350 to 450° C. and the temperature of the second and further reaction zones is from 350 to 480° C. and the temperature difference between the hottest reaction zone and the coolest reaction zone is at least 2° C. |
申请公布号 |
AU5036301(A) |
申请公布日期 |
2001.09.24 |
申请号 |
AU20010050363 |
申请日期 |
2001.03.06 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
JENS WEIGUNY;SEBASTIAN STORCK;ANDREAS TENTEN;WILHELM RUPPEL |
分类号 |
C07D307/60;B01J27/28;B01J38/04;C07B61/00;C07C51/215 |
主分类号 |
C07D307/60 |
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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