低温甲醇泵机械密封泄漏原因分析及其改造措施

Causes and solutions for leakage through mechanical sealing in cryogenic methanol pump

通过对净化装置低温甲醇洗单元低温甲醇泵出现的机封泄漏问题进行分析,总结了低温泵机械密封失效的主要形式和特点,具体通过机械密封结构,材质,密封冲洗等方面,给出了低温泵机械密封泄漏问题的解决方案。通过对低温甲醇泵机械密封的成功改造,延长了机械密封的使用寿命,为装置的安、稳、长、满、优稳定运行提供了保障。

This article provides insights into the causes of the leakage through the mechanical sealing in cryogenic methanolpump of the low-temperature methanol washing unit.It sums up the main forms and characteristics of mechanical seal failure in thecryogenic pump and offers solutions through the structure,material,and washing of the sealing.The successful modification for themechanical sealing in cryogenic methanol pump has prolonged the service life of the mechanical sealing,which provides the guaranteefor the safe,stable,long,full and excellent operation of the plant.