The solid phase polymerization equipment needs high quality nitrogen, and the work conditions for the purified system equipment of nitrogen is acrimonious. The structure design and the manufacture process of nitrogen heat changer are also introduced.

• 固相缩聚装置氮气质量要求高 ,氮气净化系统设备工作条件苛刻 ,介绍了氮气换热器的结构设计和制造工艺