Based on cause analysis of perlite entering piston oxygen compressor with inlet gas,corresponding treatment measures are described.The seal gas of cold box was moved from nitrogen pipe to waste nitrogen pipe to prevent similar accidents.

• 分析了活塞式氧压机进气带珠光砂的原因,介绍了处理措施,把冷箱密封气从氮气管线上改到污氮管线上,以杜绝类似事故再次发生。