细旦丙纶专用聚丙烯生产工艺的优化

通过对国内目前所需细旦丙纶原料(聚丙烯)的质量指标进行调研,制定出相应的质量指标体系。分析对比了化学降解法和氢调法生产细旦丙纶原料的优缺点,介绍了氢调法生产的工艺流程。通过对生产中的各种工艺参数进行控制和调优,开发并优化了生产细旦丙纶原料的工艺条件。实践证明:通过控制好聚合加氢量、聚合反应的工艺条件,加强丙烯精制,提高主催化剂活性,控制助催化剂的加入量,就可生产出质量可靠、纺丝性能优良的细旦丙纶专用料。

Process Optimization for Production of Special Resin for Fine PP Fiber

The investigation was made on first quality index of raw material (PP) for producing fine PP fiber in domestic factories. The two main technologies for producing the desired material, chemical-degradation and hydrogen-regulating methods, were compared and the latter was selected as the more advanced process. Detailed flowsheet of the selected process was introduced. By controlling and adjusting the operation parameters, the process was developed and optimized for producing the special resin for fine PP fiber. It was found that by controlling hydrogen-adding quantity and process condition, improving propylene refining quality and catalyst activity, etc, the special PP resin with stable quality and good filature property was produced.