LLDPE生产过程中色粒数量超标问题解决与探讨

THE SOLUTION AND ANALYSIS ON REDUCING COLOR PELLET GENERATION IN PRODUCTION OF LLDPE

LLDPE产品生产过程中,黑色粒数量是产品质量关键指标,数量超标影响产品性能。文章依据实际生产过程中解决黑色粒超标操作实践分析其可能原因。工业运行结果表明:①适度提高节流阀开度可以有效降低黑色粒数量;②熔体温度对黑色粒产生有显著影响;③黑色粒数量与牌号相关;④黑色粒数量与造粒机组进料负荷存在一定的相关性。

In production of LLDPE,the black pellet number was the key controlled index,the product performance would be influenced by excessive black pellet quantity.According to the operation practice for solving the excessive black pellet problem in actual production,the causes was analyzed.The results showed:①the color pellets number could be effectively reduced by appropriately increasing the opening of throttle valve;②black pellets generation was obviously influenced by the melt temperature;③the black pellet number was related to resin grade;④there was a certain correlation between black pellet number and feed load of the granulator.