›› 2016, Vol. 47 ›› Issue (5): 108-112.

• 分析与评定 • 上一篇    

低硫汽油中含硫化合物的形态分析

钱钦,王征   

  1. 中国石化石油化工科学研究院
  • 收稿日期:2015-11-23 修回日期:2015-11-24 出版日期:2016-05-12 发布日期:2016-04-25
  • 通讯作者: 钱钦 E-mail:qianqin.ripp@sinopec.com

DETERMINATION OF SULFUR COMPOUNDS IN LOW SULFUR GASOLINE

  • Received:2015-11-23 Revised:2015-11-24 Online:2016-05-12 Published:2016-04-25

摘要: 建立了低硫汽油中含硫化合物类型分布的气相色谱-硫化学发光检测器(GC-SCD)的分析方法。优化了色谱条件,提高了方法对硫化物的分析灵敏度,对汽油中硫的检出限达到0.05 mg/L。考察了重复性,对于硫含量分别为1,5,10 mg/L的汽油样品重复测定5次,重现性良好,相对标准偏差小于1%。在此基础上,分析了选择性加氢脱硫(RSDS)工艺和吸附脱硫(S Zorb)工艺产品汽油中含硫化合物的类型分布,并探讨了不同硫含量中汽油硫类型的分布规律。该方法可应用于不同来源的低硫汽油中各种硫化物类型分布的研究。

关键词: 气相色谱, 硫化学发光检测器, 加氢脱硫, 硫化物, 吸附脱硫

Abstract: The method was established for separation and determination of sulfur compounds in low-sulfurgasoline by gas chromatography-sulfur chemiluminescene detector (GC-SCD). The chromatographic condition for the determination of low-sulfur gasoline was optimized and the sensitivity was increased. The detection limit and reproducibility were investigated. The qualitative and quantitative assays for sulfur compounds in low-sulfur gasoline from selective hydrodesulfurization (RSDS) process and S Zorb gasoline adsorption desulfurization process were conducted by GC-SCD to demonstrate the feasibility. The methods can be applied to all kinds of catalytic gasoline fractions.

Key words: gas chromatography, sulfur chemiluminescene detector, hydrodesulfurization, sulfur compound, adsorptive desulfurization