基于NSGA-Ⅱ的催化裂化分馏塔的多目标优化

Multi-objective Optimization of Catalyzing & Cracking Fractionating Tower Based on NSGA-Ⅱ

摘要:

在催化裂化装置生产中,主分馏塔的操作水平和技术水平直接影响整套装置的经济效益；研究催化裂化加工装置优化设计,分馏系统的操作优化非常重要；引入已经建立的分馏塔多目标优化函数并运用NSGA-Ⅱ对模型进行求解；通过深入研究算法并对NSGA-II算法中各项参数设置后,求解得一组Pareto最优解,该组最优解具有良好的延伸和分布；并引入多目标综合评价优化函数,求得一组最优解；结果表明在满足约束条件下,分馏塔的汽油和柴油的产率能得到显著的优化。

Abstract:

In the catalytic cracking unit production, the operations and technical levels of the main fractionator directly affect the economic benefits of the entire device. As an important device in the catalyzing & cracking process, optimization is very important to the operation of the fractionation system. This paper introduced established fractionator multi-objective optimization function and using the NSGA-Ⅱto solve the model. Through study the algorithm and set the parameters of the NSGA-Ⅱ, solving a set of Pareto optimal solution, and the group of optimal solution has good extension and distribution. And set the optimized function of multi-objective comprehensive evaluation, obtain a set of optimal solution. The results show that under the condition of satisfing the constraints, the yield of gasoline and diesel can get significant optimization.