This paper introduces the phenomenon of block of polymer formed in the primary compressor outlet heat exchanger of the low density polyethylene plant.The decomposition temperature,crystallinity and relative molecular mass distribution of the polymer were characterized by thermogravimetry analyzer,differential scanning calorimeter and gel permeation chromatograph.The causes of the heat exchanger blockage were discussed to offer effective solutions including replacing fault oil drain at the first outlet of primary compressor,cleaning leakage pipelines,adding more oil to primary compressor,and ensuring the tube side of heat exchanger clean,which guarantee the smooth operation of the plant.
关键词
低密度聚乙烯/一次压缩机/换热器/堵塞
Key words
low density polyethylene/primary compressor/heat exchanger/block
维普
万方数据