The reliability,product quality control and grade switch control of polyethylene unit have been greatly improved after the commissioning of advanced process control system APC+2.0.Two challenges of product quality and grade switch fluctuation appeared during the operation test.The formula parameters and operation program were optimized by analyzing the test data.The operation results show that the optimized APC+2.0 significantly improves the maximum load,reduces the off-specification products as a result of grade switch,saves the reactor's consumption of iso-pentane,lowers the operational labor intensity,improves the product stability,furthers the product value,and brings economic benefits for the unit on a continuous basis.
关键词
聚乙烯/先进控制系统APC+2.0/运行难题/操作优化/运行效果
Key words
polyethylene/advanced control system APC+2.0/operational challenge/operation optimization/operation result
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