催化裂化汽油加氢脱硫技术的研究

在分析催化裂化汽油硫和烯烃分布不均匀的基础上,对全馏分催化裂化汽油选择性预加氢后再分馏，开发出活性高和稳定性好的催化裂化汽油加氢脱硫催化剂及工艺技术。结果表明,产品汽油硫含量由196.2×10^-6降至39.2×10^-6，加氢脱硫率80.1%，硫醇由33.8×10^-6降至5.95×10^-6，烯烃体积分数较原料油降低了2.1个百分点， 研究法辛烷值损失0.5个单位，收率99.24%，可生产满足国Ⅳ清洁标准的汽油调和组分。

Researches on hydrodesulfurization process of catalytic cracking gasoline

Based on uneven distribution of sulfur and olefin in fluid catalytic cracking（FCC） gasoline, FCC gasoline was pre-hydrogenated, and then fractionated. The catalyst with high activity and stability for FCC gasoline hydrodesulfurization as well as their process technology were developed. The results of performance test showed that sulfur content of FCC gasoline was decreased from 196. 2 ×10-6 to 39.2 × 10-6 ,and total sulfur removal rate was 80.1% ;mercaptan content was reduced from 33.8 × 10-6 to 5.95 × 10 -6 ; the average olefin loss was 2. 1 percentage points, and RON loss was only 0.5 units. Gasoline yield of 99.24% was attained. The treated gasoline could meet the requirements of National Standard IV for clean gasoline.