干熄焦旋转焦罐故障原因分析及改进措施

Failure Analysis and Improvement of the CDQ Coke Rotating-cans

针对干熄焦罐故障率高的问题,分析认为,主要原因是干熄焦罐框架变形、开裂,衬板与旋转密封阀腔的结构尺寸不包容,衬板材质的选用不合理及衬板更换操作不规范。罐车框架改造采用三角弧结构,均布加强筋并塞装隔热材料;改进衬板结构及材质并规范操作。改造后,旋转密封阀卡料故障由20起降为0;衬板使用寿命增加了1倍,因衬板造成的故障停机率降低了90%。

For the high failure rate issue of the CDQ coke-cans,analysis considered that main reasons were as follows：the framework of CDQ coke-cans deformation,cracking,not tolerant the structure size of the liner and the rotating seal valves cavity,unreasonable selection of lining material and nonstandard operation of the liner replacement.The transformation of the body frame structure with triangular arc,were reinforced with internal reinforcing and filled in heat insulating material,improving the structure and the liner material and standard operation.Then,the clamped-stop failures of rotating seal valves were reduced from 20 times to zero,the liner life increased by two times and downtime caused by the liner was reduced by 90%.