The major influencing factors of blending coker naphtha for 90 RON unleaded gasoline are its distillation range, octane number, existent gum and mercaptan content.

• 影响焦化汽油调合生产90号无铅汽油质量的主要因素是焦化汽油的馏程、辛烷值、实际胶质和硫醇硫的含量。