提高催化裂化汽油辛烷值的技术思路探索

在分析催化裂化汽油馏分单体烃辛烷值特点的基础上,确定了理想的汽油高辛烷值组分,并系统考察了反应深度对大庆蜡油催化裂化反应所得汽油辛烷值和高辛烷值组分含量影响的差异,同时研究了汽油烯烃催化转化生成高辛烷值组分的可行性。结果表明,不同重油催化裂化反应深度下,汽油的烃组成和辛烷值的差异较大,不同烃族对辛烷值的贡献不同。适宜反应条件下,富含C_5~C_7烯烃的汽油和大分子烯烃均可转化为高辛烷值组分。

Exploration on the Technology of Increasing FCC Gasoline Octane Number

Ideal components with high octane number were confirmed through analyzing octane-number characteristics of single hydrocarbon in FCC gasoline.The influence of conversion rate to gasoline octane number and the content of high-octane number components was studied as well as the feasibility of converting gasoline olefins to high-octane number components. The results showed that different conversion rate caused big difference of gasoline hydrocarbon composition and octane number, and different hydrocarbon had different contribution to octane number. Under suitable reaction conditions, C5~C7 olefins and macromolecular olefins in gasoline can be converted to high-octane number components.