Analysis of wall fouling in chromium-based polyethylene gas-phase reactor based on investigation of particle morphology
Analyzing the morphology and growth process of polyethylene particle in the gas-phase reactor is crucial for understanding the electrostatic charging and sheeting in fluidized-bed.In fact,existing studies have explored the causes of wall fouling in linear low-density polyethylene,but lack of systematic studies for chromium-based polyethylene installations under condensing conditions.This study aimed to reveal the relationship between wall fouling and morphology of polyethylene particle by size analysis and SEM.The results show a general phenomenon morphology deterioration and particle size variation,triggering the electrostatic charging,local hotspots,and sheeting.The method and results in this paper provide important guides for long period operation of similar devices.
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