燃炉输煤系统中滚筒筛的运行故障及对策

Operation Faults of Drum Screen in Furnace Coal Handling System and the Countermeasures

针对中国石化齐鲁分公司第二化肥厂燃煤输送系统中的PQG-250滚筒筛设备的运行故障,包括链条固定轴断裂、无联锁堵煤停车、托轮卡涩不转等方面的问题,通过分析该设备的运行原理,对比技术参数,采取改进链条固定轴材质、增设测速联锁停车系统、加装金属防尘盖与自动注油系统等措施,有效消除链条固定轴磨损断裂、托轮卡涩不转、滚筒筛筛体突然堵煤等故障对装置安全稳定运行的影响,明显改善了该滚筒筛设备的运行状况。

This paper targets the operation faults of PQG-250 drum screen in the furnace coal conveying system of the Second Fertilizer Plant of Qilu Branch of Sinopec,which include chain fixed shaft fracture,no-interlock coal jamming shut-down,and stuck jockey pulley,and by analyzing the operation principle of drum screen equipment as well as comparing technical parameters,such measures as improving chain fixed shaft material,adding speed-measuring interlock shut-down system,and adding metallic anti-dust cover&automatic oil injection are taken,which effectively eliminate the impact of the above-mentioned faults on the safe and stable operation of the unit,and significantly improve the performance of the drum screen equipment.