VA含量对EVA生产设备管道安全的影响  

Influence of VA Contents on Pipeline Safety of EVA Production Equipment

作　　者：耿茂飞 肖军 钱则刚 王乐 李小仨 姜慧君 李金禄 GENG Maofei;XIAO Jun;QIAN Zegang;WANG Le;LI Xiaosa;JIANG Huijun;LI Jinlu(State Key Laboratory of Compressor Technology,Hefei General Machinery Research Institute Co.,Ltd.,Hefei 230031,China)

机构地区：[1]合肥通用机械研究院有限公司,压缩机技术国家重点实验室,安徽合肥230031

出　　处：《塑料工业》2022年第3期79-81,89,共4页China Plastics Industry

基　　金：中石化重大装备国产化项目(420056-3);合肥通用机械研究院有限公司博士基金(2019010386)。

摘　　要：为提升乙烯-醋酸乙烯共聚物(EVA)的产能,中石化某公司将现有的低密度聚乙烯(LDPE)生产线改造为EVA生产线,发现当原料工质中含有醋酸乙烯(VA)时,设备的振动加剧,可能引发管道疲劳问题。通过超高压压缩机非侵入式管道脉动测试,验证了VA含量的增大会提升EVA生产设备的管道脉动。最后,基于管道应力的分析,从安全性角度,为LDPE生产设备改造为EVA生产设备提供了建议。In order to improve the capacity of ethylene-vinyl acetate copolymer(EVA),a Sinopec company transformed the low-density polyethylene(LDPE)production line into EVA production line.It was found when the raw material contained vinyl acetate(VA),the vibration of equipment was intensified, which may cause pipeline fatigue.Through the non-invasive hyper compressor pipeline pulsation test, it was verified that the increased of VA contents could increase the pipeline pulsation of EVA production equipment.Finally, based on the analyzed of pipeline average stress, from the perspective of safety, it provided advice for LDPE production equipment transformation to EVA production equipment.

关 键 词：低密度聚乙烯 乙烯-醋酸乙烯共聚物 管道脉动 超高压压缩机 

分 类 号：TQ320.5[化学工程—合成树脂塑料工业]