粉煤三通阀在Shell粉煤气化中的应用及国产化改进

简述Shell粉煤气化装置开车运行中粉煤三通阀出现开关不到位、阀塞和阀座卡死的问题，介绍粉煤三通阀的工作原理、结构和故障分析以及国产化改进后的粉煤三通阀的使用情况和技术特点。实践证明，国产化改进有效解决了Shell粉煤气化在投煤过程中粉煤三通阀出现的问题，保障了装置的长周期安全稳定运行。

Use of Fine Coal Three-Way Valve in Shell Fine Coal Gasifier and Improvement on Chinese-Mode Equipment

A brief account is given of the start-up and operation of the Shell pulverized coal gasifier,including the opening and closing of the pulverized coal three-way valve not in place,and jamming of the valve plug and valve seat.The work principle of the valve is described,as well as its structure,fault analysis,and its use and technical features after improvement in the Chinese version.Practice has shown that the improvement has solved efficiently the problems of the valve occurring in the coal feeding and ensu...