FCC汽油加氢脱硫_降烯烃工艺技术的研究.pdfVIP

广 东 化 工 2010 年 第11 期 · 50 · 第37 卷 总第211 期 FCC 汽油加氢脱硫/降烯烃工艺技术的研究 苏国平，霍东亮，崔德强，余济伟，张成，王宝成 (中国石油抚顺石化公司 催化剂厂，辽宁 抚顺 113001) [摘 要]在分析催化裂化汽油硫和烯烃分布不均匀的基础上，对催化裂化汽油进行分馏，开发出了活性高和稳定性好的重馏分辛烷值改进催 化剂和选择性加氢脱硫催化剂及其工艺技术。采用该工艺技术对RFCC 汽油进行轻馏分碱洗抽提脱硫醇，重馏分辛烷值改进/选择性加氢脱硫等 改质处理，再按分馏比例回调，产品汽油烯烃含量为24.2 v % ，较原料油降低了16.0 v %，芳烃含量为19.2 v %，较原料油提高了4.1 v % ，硫 含量为41.5 ppm ，总脱硫率为85.46 % ，RON 为 87.8 ，较原料油提高0.4 个单位，液收99.1 % ，可生产符合国Ⅳ规范的清洁汽油。 [关键词]催化裂化(FCC) ；分馏；辛烷值改进；加氢脱硫；降烯烃 [中图分类号]TQ [文献标识码]A [文章编号]1007-1865(2010)11-0050-02 Development of Process Technology for Hydrodesulfurization and Olefin-Reducing of Fluid Catalytic Cracking Gasoline Su Guoping, Huo Dongliang, Cui Deqiang, Yu Jiwei, Zhang Cheng, Wang Baocheng (Catalyst plant of CNPC Fushun Petrochemical Company, Fushun 113001, China) Abstract: With respect to inappropriate distribution of sulfur and olefin in Fluid Catalytic Cracking (FCC) gasoline, the FCC gasoline was fractionated and high-activity and stability octane number improving catalyst and octane number improving catalyst as well as process technology for heavy fraction were developed. Upgrading of Residue Fluid Catalytic Cracking (RFCC) gasoline was carried using the process technology via light fraction mercaptan removal with NaOH aqueous solution, and heavy fraction octane number improvement / hydrodesulfurization., the olefin volume fraction in RFCC gasoline decreased from 40.2 % to 24.2 % , sulfur form 285.5 ppm to 41.5 ppm, overall desulfurization of 85.46 %, research octane number (RON) increased 0.4 units and gasoline yield of 99.1 %, respectively. The treated gasoline conformed to ChinaⅣ standard. Keywords: fluid catalytic crack (FCC) ；fractionation ；octane numb