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通过对中石油大庆石化分公司600 kt/a乙烯装置应用全流程多模型智能控制技术,结合实际生产对控制回路PID参数、超驰控制、非线性区域控制等方面进行优化改造,降低了各系统温度、压力、液位的波动幅度,实现了干燥器无扰动切换,降低了碱洗塔新鲜碱的注入量,提高了装置的自控率及平稳率,增强了乙烯装置整个系统的稳定性和安全性,对提高目的产品收率、实现节能减排、低碳生产具有重要意义。
Through the whole process multi-model intelligent control technology applied to 600 kt / a ethylene unit of PetroChina Daqing Petrochemical Company, optimized and reformed the control loop PID parameters, overrun control and non-linear area control with actual production, the system temperature , Pressure and liquid level fluctuations to achieve a dry switch without disturbance, reducing the caustic soda caustic injection into the tower, increasing the device’s self-control rate and smooth rate, and enhance the stability and safety of the entire system of ethylene plant , To improve the yield of the target product, to achieve energy-saving emission reduction, low-carbon production is of great significance.