摘要
在固定床中型加氢实验装置上,以石家庄炼化分公司催化裂化柴油为原料,在氢分压10.0MPa、体积空速1.14h-1、氢/油体积比1000、反应温度360℃的条件下,考察了加氢改质精制段各主要烃类的化学反应过程;在氢分压10.0MPa、体积空速2.68h-1、氢/油体积比1000、精制段反应温度360℃的条件下,考察了加氢改质的改质段不同反应温度下的化学反应过程。结果表明,精制段中,芳烃的加氢饱和反应对十六烷值的正向贡献约为18.46个单位,长侧链烃类断裂为短侧链烃类的反应对十六烷值的负向贡献约为1.06个单位,正负向的综合作用使得十六烷值提高17.40个单位;改质段中,芳烃加氢饱和反应和环状烃开环裂化反应对十六烷值的正向贡献为3.93～6.60个单位,长侧链烃类断裂为短侧链烃类的反应对十六烷值的负向贡献为0.33～1.19个单位,综合作用的结果使得改质产品柴油与精制油相比十六烷值提高3.60～5.50个单位。
The chemical reaction process of main hydrocarbons in refining stage was investigated with Shilian light cycle oil as feed at hydrogen partial pressure of 10.0 MPa, volume space velocity of 1.14 h 1, hydrogen-oil volume ratio of 1000, reaction temperature of 360℃ in pilot plant. The chemical reaction process of up-grading stage under different reaction temperatures at a hydrogen partial pressure of 10.0 MPa, a volume space velocity of 2.68 h 1, a hydrogen-oil volume ratio of 1000, was also investigated with a constant reaction temperature of 360~C in refining stage. The results showed that the positive contribution of aromatics hydrogenation saturation to the cetane number was about 18.46 units, the negative contribution of cracking reaction of hydrocarbons with long side-chain to the cetane number was about 1.06 units, and the total cetane number due to the combination of positive and negative effects increased by 17.40 units in refining stage, while the positive contribution of aromatics hydrogenation saturation and ring opening of naphthenic structures to the cetane number was 3.93- 6.60 units in up-grading stage, the negative contribution of cracking reactions of hydrocarbons with long side-chain was 0.33-1.19 units in the up-grading stage, and the final cetane number of up-grading product due to the integrative effect of reactions increased only 3.60-5.50 units over refining oil.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2013年第3期376-382,共7页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
中国石化股份公司项目(S107024)资助
关键词
柴油
加氢改质
烃类反应
十六烷值
diesel
hydro-upgrading
hydrocarbons reaction
cetane number
