基于膜分离过程的6-APA生产技术

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该项目设计了适当的纳滤膜浓缩工艺,以提高6-APA生成率,6-APA成品的平均克分子收率达90.18%;设计了醋酸丁酯-乙醇结晶工艺;选择了合适的溶媒体系及控制pH值以确保6-APA的质量;对溶媒及副产品苯乙酸进行了回收利用,降低了成本,减少了环境污染.纳滤膜分离技术是使低浓度裂解高浓度结晶得以实现的关键技术.用于100t 6-APA生产线上取得良好效果.
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