低品质汽油的催化改质

CATALYTIC UPGRADING OF LOW QUALITY GASOLINE

直馏汽油和焦化汽油属于辛烷值较低的低品值汽油。经裂化催化剂催化改质后，C3～C4产率可以达到30％～40％，其中C_3=+C_4=约占60％～70％。催化改质后，汽油族组成发生变化，烷烃和环烷烃含量降低，芳烃含量大幅度增加，从而使汽油的MON提高10～20个单位。

Straight-run gasoline and coker gasoline are poor quality gasolines with low octane numbers. A catalytic upgrading process using catalytic cracking catalyst is proposed. The experimental results showed that through catalytic upgrading gasoline motor octane number can be enhanced by 10 to 20 units; the contents of paraffins and naphthenes were decreased; and the aromatics content was significant ly increased. The experimental results also showed that the yield of LPG reached 30 to 40 wt% with anolefinicity of 60 to 70%.