深冷装置解冻方法的改进

Improvement of De-freezing Method in Cryogenic Unit

从冷箱解冻的工艺流程和物料计算方面对解冻方法进行了阐述，分析了冷箱解冻时间偏长的原因，论述了解冻方法的改进措施和实施步骤，结果表明，改进后解冻速度在初期达到30℃/h，解冻时间缩短了2～3天。

Description was made for de freezing method from aspects of process flow of de-freezing of cold box and material calculation, the cause for too long time of cold box de-freezing was analyzed, improvement measures and execting procedures for de-freezing method were discussed, the result indicates that de freezing speed at initial period reaches to 30℃/h after improvement, de freezing time is reduced by 2-3 days.