由于蒸汽中二氧化硅含量超标,造成空分设备配套汽轮机叶轮和流通部件结垢,导致汽轮机负荷下降,影响空分设备的正常运行。采用低压饱和湿蒸汽蒸煮的方法清除垢物,使汽轮机的负荷恢复正常。介绍汽轮机叶轮和通流部件结垢时的参数变化情况和结垢原因的分析过程,阐述蒸煮方法的实施步骤和预防措施。 Due to the excessive content of silica in the steam, the fouling of the steam turbine impeller and the circulating parts in the air separation plant is caused, which leads to the decrease of the steam turbine load and the normal operation of the air separation plant. Low-pressure saturated steam cooking method to remove dirt, so that the turbine load back to normal. This paper introduces the analysis of the parameter changes and scaling reasons of the turbine impeller and the through-flow components scaling, and describes the implementation steps and preventive measures of the cooking method.