间硝基氯苯的分离及其可行性研究

探讨、分析了对、邻硝基氯苯生产废料中间硝基氯苯的可能分离方法 ,确定采用恒沸减压精馏法为最佳。通过大量的实验 ,筛选出了一种合适的恒沸剂 ,并确定了恒沸减压精馏的最佳工艺条件 ,同时还对年产 2 0 0t间硝基氯苯的生产工艺进行了详细的可行性研究 ,结果表明 ,该项目投资小、能耗低、收益高 ,工业化前景广阔。

Separation of meta-nitrochlorobenzene and its feasibility study

The separation of meta nitrochlorobenzene from the waste fluid of para ,ortho nitrochlorobenzene production was investigated in this paper. The azeotropic vacuum distillation method was employed. A kind of suitable entrainer was chosen, and the optimal technology parameters were also obtained through many experiments. In addition, the feasibility study on a 200 t/a meta nitrochlorobenzene plant with the method mentioned above was carried out. The result of research showed that this technology has the advantage of less investment, lower energy consumption and higher benefit. It is prospective for industrialization.