Besides, since blending ethylene tar in feed, in coker gasoline the contents of n-hexane and aromatics increase, while the content of n-nonane decreases;

• 掺炼乙烯裂解焦油后，对焦化汽油馏分中，正己烷等直链饱和烃类增加，芳香烃类的含量有所增加，而正壬烷等直链饱和烃类有所减少；