CDOS-HCN汽油选择加氢脱硫技术的应用

Application of CDOS-HCN gasoline selective hydrodesulfurization technology

目的介绍汽油选择加氢脱硫CDOS-HCN工艺及配套钛基系列催化剂HDDO-100/HDOS-200/HDMS-100。方法CDOS-HCN工艺可对催化裂化汽油实现分馏切割为轻馏分(LCN)和重馏分(HCN),LCN可去醚化装置或直接混入汽油池,HCN可经催化剂深度脱除硫化物。结果HDDO-100催化剂可在脱除原料中二烯烃的同时,使小分子硫醇及硫化物与烯烃发生硫醚化反应转化成大分子硫化物,经分馏切割至HCN后,LCN中总硫质量分数满足≤10μg/g的控制指标要求;HDOS-200/HDMS-100双催化剂可深度脱除HCN中硫化物,同时,可控制烯烃饱和率,满足克石化生产符合车用汽油(ⅥA)和车用汽油(ⅥB)产品标准的技术要求。结论工业装置长周期运行结果表明,该工艺技术配套系列催化剂性能稳定,装置运行平稳,工艺安全可靠。

Objective Introduce the CDOS-HCN process for selective hydrodesulfurization of gasoline and the supporting titanium-based series catalyst HDDO-100/HDOS-200/HDMS-100.Methods The COS-HCN process was used to fractionate FCC gasoline into light fraction(LCN)and heavy fraction(HCN),and LCN can be etherification reaction or mixed into gasoline components,sulfide in HCN can be deeply removed with catalyst.Results HDDO-100 catalyst could effectively remove diolefin in the raw material.At the same time,small molecular mercaptans and sulfides were converted into large molecular sulfides by thioetherification with olefins which could be fractionated and cut to HCN to achieve the control index of total sulfur mass fraction in LCN no more than 10μg/g.HDOS-200/HDMS-100 double catalyst for the deep removal of sulfides in HCN,could effectively control the olefin saturation rate to meet the technical requirements of the Karamay Petrochemical Company for producing petroleum products which met the gasoline for motor vehicles(ⅥA)and(ⅥB)national standard.Conclusions The long period operation results of the industrial unit showed that the supporting series catalysts of the process have stable performance,stable operation of the unit and safe and reliable process.