Three purification processes in producing caprolactam with toluene are introduced.对甲苯法制备己内酰胺精制工艺方法进行了改进。
Recent progress on caprolactam process technology is reviewed,and suggestions about developing China's caprolactam industry are presented.评述了己内酰胺工艺技术开发的最新进展，提出了发展我国己内酰胺工业的建议。
