Qualitative and quantitative analysis of refined F-T wax on GC-MS and GC

被引:1
作者
Cheng, Songpeng [1 ]
An, Liangcheng [2 ]
Li, Zhenling [1 ]
Liu, Suli [2 ]
Lv, Junmin [1 ]
Fan, Subing [1 ]
Zhao, Tiansheng [1 ]
机构
[1] Ningxia Univ, Sch Chem & Chem Engn, State Key Lab Highefficiency Coal Utilizat & Green, Yinchuan 750021, Peoples R China
[2] Ningxia Coal Ind Co Ltd, Natl Energy Grp, Yinchuan 750411, Peoples R China
关键词
Refined F-T wax; Qualitative; Quantitative; GC-MS; GC; Cracking products; STEAM CRACKING PROCESS; THERMAL-CRACKING; ALPHA-OLEFINS; COAL; PYROLYSIS; PARAFFIN;
D O I
10.1016/j.fuel.2022.126031
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The products with higher carbon numbers from Fischer-Tropsch (F-T) synthesis are very complex and hard to directly be analyzed on GC due to their very high boiling point. In this work, the qualitative and quantitative analytical method for refined F-T wax samples with C7 to C38 was established on GC-MS. All components were well separated, qualified and quantified. The analytical errors were less than +/- 2 % and the errors of recovery experiments were less than +/- 5 %. Thereafter, this method was successfully applied in GC analysis with errors less than +/- 0.75 % and the analytical method on GC was also built, which will provide a more convenience way in analysis of refined F-T wax samples. Based on the obtained analytical conditions and the relative calibration factors of paraffins, the qualitative and quantitative method for the cracking products from refined F-T wax was further built according to a similar method by using simulated samples with the conversion from 5 % to 80 %. The thermal cracking of F-T wax 5# was performed and the content of LAOs in liquid mixtures reached over 50 % at 650 degrees C. This study simplifies the previous analysis methods which can only be completed by using a variety of standard methods and provide convenience for analysis of refined F-T wax from coal-to-liquid plant.
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页数:11
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