本文介绍了某公司PTA装置CTA单元氧化第二结晶器的搅拌器在运行中突然发生的搅拌轴断裂事故,并对断轴的原因进行了分析,阐述了搅拌轴、轴承座修理的方法和要求,并提出改进方案,经修理后的搅拌器投入生产使用,达到了预期的目标,取得了良好的经济效益。 This article introduces a sudden breakage of the agitator shaft of the agitator of the second crystallizer in the CTA unit oxidation of the PTA unit in a certain company and analyzes the reasons for the shaft breakage. The methods and requirements for the repair of the agitating shaft and the bearing housing are described , And put forward the improvement plan. After the mixer is put into production, it achieves the expected goal and achieves good economic benefits.