超临界机组制粉系统运行及异常处理

Operation Experience and Fault Treatment in Coal Pulverizing System of Supercritical Power Generating Units

结合山西鲁晋王曲发电有限责任公司的中速制粉系统运行情况和事故处理案例,分析了磨煤机进水的原因、处理方法和防范措施,提出了石子煤冲洗系统中阀门工作环境恶劣,造成易磨损、卡涩是导致磨煤机进水的主要原因。介绍了减少磨煤机石子煤的运行调整工作方法,使制粉系统的安全稳定性和经济性都得到了提高。

Combined with the operation and fault treatment cases,this paper analyzes the reason of water influx of the pulverizer.The main reasons for water influx are valve weariness and sticking,which are caused by bad working conditions in the Pyrite Flushing System.It also introduces an operation adjusting method of reducing pyrite amount in the coal pulverizer,thus economically improving the safety and stability.