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Application of GC-MS chromatography for the analysis of the oil fractions extracted by supercritical CO_2 at high pressure

机译：GC-MS色谱法在超临界CO_2高压萃取油馏分分析中的应用

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摘要

GC-MS chromatographic analysis has been applied for the investigation of the fractions of oil extracted by supercritical carbon dioxide at a temperature of 60 ℃ and at pressure values ranging from 22 to 56 MPa. The observations revealed, that the whole extraction process is clearly reflected in the chromato-grams, demonstrating how the heavier hydrocarbon fractions were gradually involved in the extraction process. The shape of the chromatograms alters with increasing pressure from triangle to trapezoid, approaching the shape of the chromatogram of the crude oil. The observation of the fingerprints of chromatograms allows them to be used for the qualitative evaluation of extraction progression. It can also be noticed, that the area under the spectrum of the chromatograms of oil samples extracted at various pressures is increasing with an increase in pressure. The oil recoveries, evaluated as the ratio of the area under the spectrum or the baseline of the chromatogram of the sample extracted at the specific pressure value to the area under the spectrum or the baseline of the chromatogram of the crude oil, showed a close correlation with the oil recoveries obtained from the experiment. This allows the use of the chromatographic method for the quantitative evaluation of oil recovery.
机译：GC-MS色谱分析已用于研究超临界二氧化碳在60℃的温度和22至56 MPa的压力值下提取的油馏分。观察结果表明，整个萃取过程都清楚地反映在色谱图中，这说明了较重的烃馏分是如何逐渐参与萃取过程的。色谱图的形状随压力的增加而变化，从三角形到梯形，逼近原油色谱图的形状。色谱指纹图谱的观察使它们可用于提取过程的定性评估。还应注意，在各种压力下提取的油样色谱图谱下的面积随压力的增加而增加。采油率以在特定压力值下提取的样品的色谱图或色谱图基线的面积与原油色谱图或谱图基线的面积之比进行评估，显示出密切的相关性从实验中获得的石油回收率。这样就可以将色谱法用于定量评价采油量。

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  • 来源
    《Fuel》 |2013年第4期|139-146|共8页
  • 作者

    Svetlana Rudyk; Pavel Spirov; Erik Sogaard;

  • 作者单位

    Section of Chemical Engineering, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Campus Esbjerg, Niels Bohr vej 8,6700 Esbjerg, Denmark;

    Section of Chemical Engineering, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Campus Esbjerg, Niels Bohr vej 8,6700 Esbjerg, Denmark;

    Section of Chemical Engineering, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Campus Esbjerg, Niels Bohr vej 8,6700 Esbjerg, Denmark;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    GC-MS; supercritical; oil recovery; oil fractions;

    机译：气相色谱-质谱超临界采油;油馏分;

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