加氢预处理对俄罗斯渣油催化裂化性能的影响

以硫、氮、金属含量及残炭均较高的俄罗斯减压渣油与减三线蜡油的混合油作原料,考察加氢预处理对渣油混合原料催化裂化性能的影响.结果表明:与未加氢预处理相比,混合原料加氢预处理所得大于350℃加氢渣油进行催化裂化时,产物的总液体收率提高4.41百分点,汽油收率提高5.74百分点,轻油收率提高5.12百分点,焦炭产率下降3.4...

STUDY ON THE EFFECT OF HYDROTREATING ON CATALYTIC CRACKING PERFORMANCE OF RUSSIAN RESIDUE

The effect of hydrotreating on the catalytic cracking performance of the mixed oil of Russian vacuum residue and VGO with high sulfur, nitrogen, metal content and high residual carbon value was investigated. The results showed that compared with non-hydrotreated feedstock, when the hydrotreated residue was over 350 °C, the total liquid yield of the product and the gasoline yield were increased by 4.41 percentage points and 5.74 percentage points, respectively, the light oil yield was increased by 5.12 percentage points, and the coke yield was decreased by 3.40 percentage points; the sulfur content of FCC gasoline was decreased from 660 μg/g to 53 μg/g, the mass fraction of olefins was decreased from 40.8% to 36.9%, the octane number of the research method was increased by 0.69. The properties of FCC gasoline were significantly improved.