CYCLOHEXANONE, the main intermediate, is produced from benzene by
hydrogenation to cyclohexane and subsequent oxidation.
HYDROXYLAMINE, the second
intermediate, is obtained in the form of its stabler sulphate salt, from ammonia,
sulphur-di-oxide and ammonium nitrite by the proven, easy-to-operate and efficient Raschig
route.
Cyclohexanone oxime is formed by the reaction of |
|
CYCLOHEXANONE
andHYDROXYLAMINE. CAPROLACTAM is produced by the Beckmann rearrangement of the OXIME in the presence of oleum. The subsequent neutralisation step yields ammonium
sulphate as co-product. The crude
CAPROLACTAM is purified by solvent extraction, ion-exchange,
hydrogenation, evaporation and vacuum distillation to obtain products of extremely high
purity and consistent quality. |
