化工学报 ›› 2012, Vol. 63 ›› Issue (1): 292-300.DOI: 10.3969/j.issn.0438-1157.2012.01.041

• 能源和环境工程 • 上一篇    下一篇

凹凸棒黏土脱硫剂脱除RFCC汽油中的硫醇和硫醚

王青宁1,张正才1,谢振萍1,吴应琴2,李澜1,焦林宏1   

  1. 1兰州理工大学石油化工学院;2中国科学院地质与地球物理研究所气体地球化学重点实验室
  • 收稿日期:2011-04-19 修回日期:2011-06-24 出版日期:2012-01-05 发布日期:2012-01-05
  • 通讯作者: 张正才

Thiol and thioether removal from RFCC gasoline with attapulgite clay

WANG Qingning1,ZHANG Zhengcai1,XIE Zhenping1,WU Yingqin2,LI Lan1,JIAO Linhong1   

  1. 1School of Petrochemical Engineering, Lanzhou University of Technology;2Key Laboratory of Gas Geochemistry,Institute of Geology and Geophysics,CAS
  • Received:2011-04-19 Revised:2011-06-24 Online:2012-01-05 Published:2012-01-05

关键词: 浸渍法, 脱硫剂, 凹凸棒黏土, RFCC汽油, 硫醇, 硫醚

Abstract: One of main pollutants in air is sulfur oxides that comes from the combustion of coal and transportation fuels.There are some regulations or rules in many countries,which set the level of sulfur content in transportation fuels,so it becomes urgent to do ultra-deep desulfurization.Hydro-desulfurization process is usually used in petroleum refining industry,in which compounds containing-sulfur are converted to H2S removed in high temperature and high hydrogen pressure.However it is difficult for removing aromatic heterocyclic sulfur.So,alterative technologies have been developed,such as adsorptive-,oxidative- and bio-desulfurization.In this paper a desulfurization agent for residue fluid catalytic cracking gasoline(RFCCG) was prepared by impregnation technique.The compounds of transition metals(Fe,Cu) were used as active component and the attapulgite,treated with nitric acid,as carrier.The sulfur content in RFCCG was analyzed by gas chromatography with atomic emission detection(GC-AED).The desulfurization agent was characterized by fourier transform infrared spectrometer(FTIR),X-ray diffraction(XRD),BET and X-ray photoelectron spectroscopy(XPS).The parameters of desulfurization process for the agent were optimized by experimental study designed by the orthogonal test.The results indicated that the best desulfurization agent obtained are 7% Fe and 6% Cu compounds on attapulgite which was acidulated and roasted at 450℃ for 5 h.The desulfurization rate was 70.02% at atmosphere pressure and room temperature,and sulfur content in RFCCG reduced from 804 μg·g-1 to 241 μg·g-1.

Key words: immersion methods;desulfurization desulfurizer;attapulgite clay, RFCC gasoline, thiol, thioether

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