| 摘要 |
Process for the preparation of E-caprolactam comprising treating 6-aminocaproic acid , 6-aminocaproate ester, 6-aminocaproamide, oligomers or polymers of these compounds or mixtures comprising at least two of these compounds in a cyclisation reactor in the presence of superheated steam in which a gaseous product stream comprising epsilon -caprolactam, lights and heavies is obtained, wherein the product stream, after condensation and removal of water and lights, is split into a E-caprolactam stream and a heavies stream containing heavies and epsilon -caprolactam and the heavies stream is recycled to a cyclisation reactor.
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