PRODUCTION METHOD FOR E CAPROLACTAM

摘要

A production method for e caprolactam including: a step in which a gas phase reaction is performed whereby a cyclohexanone oxime is caused to come in contact with a solid catalyst and the cyclohexanone oxime is converted to e caprolactam in the coexistence of a lower alcohol; and a step in which the volumes of water ammonia and amine coexisting in the gas phase reaction system are adjusted to the values in formulas (1 3). The lower alcohol in the e caprolactam production method includes a recovered lower alcohol that is recovered from a reaction mixture obtained by the gas phase reaction. (1) 0?{[ammonia (number of moles)/lower alcohol (number of moles)]×100}<14; (2) 0<{[water (number of moles)/lower alcohol (number of moles)]×100}<11; (3) 0?{[amine (number of moles)/lower alcohol (number of moles)]×100}<7.5