多变量预测控制软件在加氢分馏装置控制中的应用

针对加氢分馏装置分馏塔工艺特点，重点分析加氢分馏塔所面临的控制问题，采用多变量预测控制软件APC—Adcon，通过实验测试、模型辨识、控制器和切换逻辑设计等工作实现该工业分馏塔系的多变量预测控制，显著提高两塔运行参数的平稳性，有效降低操作人员的操作难度。实际应用的结果表明该多变量预测控制系统可有效地克服干扰、确保工艺参数的平稳运行。通过该系统的应用使在相同的负荷下，燃料气减少5％，显著提高分馏塔的分离能力，组分切割更为合理，航空煤油收率提高0.4％，取得了显著的经济效益。

Advanced Process Control and its Application in Hydrocracking DistillatiOn Chain

For hydrocracking distillation chain, this paper analyses difficulties in process control of the industrial distillation chain. APC-Adcon, an APC software based on model predictive control strategy, is used to solve these problems of the distillation chain through experiments, model identification, controller and switching logical design. Successful application of APC improves disturbance rejection and product quality. The application of this system in the same charge reduces 5% of gas, increases 0.4% aviation kerosene, and therefore improves economic benefit of production.