面对愈加严格的国Ⅵ汽油标准,综合传统汽油调合效应模型和乙基模型的优点,本文以现有组分油,建立汽油可变调合效应辛烷值模型.仿真表明,可变调合效应模型预测精度更高.以现有工艺条件为基础,利用新模型对调合95号汽油的现有实际配方在国Ⅴ标准和京Ⅵ标准下进行优化,探讨面向国Ⅵ标准的汽油调合优化技术.研究针对汽油优化过程中的优化模式,即目标函数和约束条件.仿真表明因京Ⅵ标准对汽油烯烃、芳烃、苯等指标进行了加严,优化难度增加,普通调合优化模式在一定工艺条件下难以满足优化要求.针对此问题,采用更先进的优化模式,即将对配方的优化变成对配方增量的优化,约束条件同时进行相应改进.结果显示新的优化模式对调合优化过程起到改善的作用,提高了优化算法的寻优能力.因此,改进后的优化模式更适合未来国Ⅵ标准下的汽油调合优化过程.%Facing the increasingly stringent national standard Ⅵ of gasoline,the variable blending effect model of gasoline is established based on the advantages of traditional gasoline blending effect model and ethyl model. Simulation results showed that the variable blending effect model was more accurate. Under the existing process conditions,the formula for the No. 95 gasoline was optimized using the established model under the national standard V and the Beijing standard Ⅵ to explore the gasoline optimization technology for Chinese national standard Ⅵ. The optimization mode of gasoline in the optimization process,the objective function and the constraint conditions,was mainly studied. The Beijing standard Ⅵ for olefins,aromatics,benzene and other indicators has been tightened. Optimization difficulty is increased,so the general blending optimization mode is difficult to meet the optimization requirements under certain process conditions. To solve this problem,an advanced optimization model was adopted,which turned the optimization of formula into the optimization of formula increment,and the constraint condition was improved at the same time. The results showed that the improved optimization mode could improve the optimization process and improve the optimization ability of optimization algorithm. Therefore,the improved optimization mode is more suitable for the gasoline blending process under the national standard Ⅵ.
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