催化裂化汽油催化精馏硫转移技术工业试验

COMMERCIAL TEST OF SULFUR TRANSFER BY CATALYTIC DISTILLATION-ALKYLATION DESULFURIZATION FOR FCC GASOLINE

中国石油天然气股份有限公司自主研发的催化裂化(FCC)汽油催化精馏硫转移-加氢脱硫工艺技术在中国石油乌鲁木齐石化公司进行了工业试验,完成两种原料工况下的工业试验标定。标定结果表明:在FCC全馏分汽油为原料的工况下,硫转移后轻汽油硫质量分数为10.1μg/g,脱硫重汽油硫质量分数为9.0μg/g,调合全馏分汽油硫质量分数为9.5μg/g,RON为88.7;在醚化重汽油为原料的工况下,醚化轻汽油硫质量分数为11.1μg/g,硫转移中汽油硫质量分数为12.9μg/g,脱硫重汽油硫质量分数为11.4μg/g,调合全馏分汽油硫质量分数为11.7μg/g,RON为90.2。采用FCC汽油催化精馏硫转移技术,轻、重汽油的切割点可以提高到100~120℃,硫转移后轻质汽油的硫含量符合对国Ⅴ、国Ⅵ标准清洁汽油调合组分的要求。

The combination technology of catalytic distillation-sulfur transfer and hydrodesulfurization developed by PetroChina was commercially tested in Urumqi Petrochemical Company,and the test calibration was completed under the working conditions of two kinds of raw materials.The results showed that when a full-range FCC gasoline was used as feed,the sulfur concentration was 10.1μg/g and 9.0μg/g in the sulfur transferred light gasoline and the desulfurized heavy gasoline fraction,respectively;the sulfur content of blended full distillate gasoline was 9.5μg/g with RON 88.7.When the etherified desulfurized heavy gasoline was employed as the raw fuel,the sulfur concentration was 11.1μg/g in the etherified light gasoline,12.9μg/g in the medium gasoline fraction and 11.4μg/g in the desulfurized heavy gasoline;the sulfur content of blended full distillate gasoline was 11.7μg/g with RON 90.2.By the catalytic distillation sulfur transfer technology for FCC gasoline,the cut temperature for separating light and heavy gasoline could be increased to 100-120℃.After the sulfur transfer,the sulfur content of the light gasoline is in line with the ChinaⅤandⅥstandard gasoline blending components.