发明名称 |
PROCESS FOR PREPARING CAPROLACTAM BY BECKMANN REARRANGEMENT |
摘要 |
The invention relates to a continuous process for preparing caprolactam by Beckmann rearrangement of cyclohexanone oxime, said process comprising a) feeding (i) oleum and (ii) cyclohexanone oxime into a first reaction mixture comprising caprolactam, sulfuric acid and SO<SUB>3</SUB>, b) feeding (iii) a portion of the first reaction mixture and (iv) cyclohexanone oxime into a second reaction mixture comprising caprolactam, sulfuric acid and SO<SUB>3</SUB>, c) withdrawing a portion of the second reaction mixture, wherein the process further comprises obtaining the cyclohexanone oxime that is fed to the reaction mixtures by: 1) preparing an organic medium comprising cyclohexanone oxime dissolved in an organic solvent 2) separating, by distillation, cyclohexanone oxime from said organic medium. |
申请公布号 |
EP1633706(A1) |
申请公布日期 |
2006.03.15 |
申请号 |
EP20040739241 |
申请日期 |
2004.05.17 |
申请人 |
DSM IP ASSETS B.V. |
发明人 |
SMEETS, THEODORUS, MARIA;LEMMENS, JOANNES, ALBERTUS, WILHELMUS;THOMISSEN, PETRUS, JOZEF, HUBERTUS |
分类号 |
B01F5/04;B01J19/26;C07D201/04 |
主分类号 |
B01F5/04 |
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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