For improving the yield and quality in azeotropic crystallization process of penicillinG three measures were applianced: (1)increasing the distillation rate before coming out crystal;

• 为提高青霉素钾工业盐收率和产品质量,主要采取了3方面的措施:(1)加快出品前蒸馏速度,缩短共沸时间;