醚化汽油调和国Ⅳ车用汽油配方研究

Study on formulations of motor gasoline blended with etherified gasoline in accordance to Chinese national standard Ⅳ

在降低锰剂加入量的情况下,利用正交试验优选出引入醚化汽油组分调和93#,97#车用汽油的配方。结果表明,调和93#汽油最佳配方的组分为醚化汽油、加氢汽油、催化汽油、甲基叔丁基醚(MTBE)、生成油,其质量分数依次为10%,60%,6%,5%,7%;调和97#汽油最佳配方的组分为醚化汽油、加氢汽油、催化汽油、MTBE、生成油、重芳烃汽油、甲苯,其质量分数依次为8%,50%,12%,9%,7%,4%,7%。按优化配方调和出符合国Ⅳ标准的车用汽油,达到了降低汽油烯烃、芳烃含量,降低蒸汽压及提高辛烷值的目的。

In the case of reducing manganese agent,the formulations for etherification gasoline blending motor 93# and 97# gasolines were optimized by using orthogonal test.The results showed that the optimum formulation for 93# blended gasoline consisited of etherified gasoline,hydrogenated gasoline,catalytic cracking gasoline,methyl tertiary butyl ether （MTBE） and reformed gasoline with mass faction of 10％,60％,6％,5％ and 7％ in turn;and the optimum formulation for 97# blended gasoline consisted of etherified gasoline,hydrogenated gasoline,catalytic cracking gasoline,MTBE,reformed gasoline,heavy aromatics gasoline and methylbenzene with mass faction of 8％,50％,12％,9％,7％,4％ and 7％ in turn.The blended motor gasolines met the need of Chinese national standard Ⅳ,which achieved the goal of lowering gasoline olefin and aromatics content,decreasing the steam pressure and increasing the octane value.