In the high pressure recycle gas system of a company's 250,000-ton/year tubular method high-pressure polyethylene device(also known as tubular low-density polyethylene device),recycle ethylene and molten polymer can not be effectively separated,and a large number of low molecular weight polyethylene is produced,resulting in the phenomenon of heat exchanger scale,which has a great impact on the long-term operation of the device.In this paper,the harm,cause,prevention and treatment measures of scale formation in high pressure recycle gas system are described,which is of guiding significance to control scale formation.
关键词
高压聚乙烯/高压循环系统/聚合物/结垢/除垢
Key words
high pressure polyethylene/high pressure recycle gas system/polymer/fouling/defouling
维普
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