Abstract:

Cracking C₆fraction is a by-product of naphtha steam crackingforethylene production. Through benzene extraction,the by-product C₆ raffinate oil hasa highcontent of n-hexane. At present, this part of C₆raffinate oil is mainly sold directly as crude hexane products or used directly for downstream gasoline blending,without enhancing its added value. The practical application shows that after removing a small amount of benzene from the C₆ raffinate oil through hydrogenation reaction, high purity n-hexane can be obtained by distillation, thus greatly improvingthe utilization value ofthe raffinateoil.

Key words:

 ')">">  , C₆ raffinate oil')">C₆ raffinate oil, hydrogenation, separation')"> separation, n-hexane ')"> n-hexane