关键词: 国Ⅵ标准, 汽油, 模型, 优化模式, 改进

Abstract: 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.

Key words: Chinese national standard Ⅵ, gasoline, model, optimization mode, improved