Determination of Fractional Distribution of Crude Oil by Gas Chromatography with Simulated Distillation
摘 要
提出了色谱模拟蒸馏测定原油馏分分布的方法,采用高温模拟蒸馏分析原油中重组分,用详细烃组成技术(DHA方法)分析原油中轻组分,通过组分整合得到原油馏分分布.试验表明:采用nC5~nC120的正构烷烃混合物作为模拟蒸馏的沸点校正样,分析的馏程范围为初馏点至750 ℃.该方法重复性好,初馏点和终馏点的标准偏差小于1 ℃,各馏分收率的标准偏差小于0.35%.此法与实沸点蒸馏方法结果基本一致,小于500 ℃各馏分的收率差值小于2.5%,可明显看出在500~750 ℃范围的馏分分布,有利于重质馏分的进一步加工利用.
Abstract
Gas chromatographic simulated distillation was applied to the determination of fractional distribution of crude oil.Heavy fraction of crude oil was analyzed by the high temperature simulated distillation (SIMD),and the light fraction by the technique of DHA hydrocarbon pre-preparation.Fractional distribution of crude oil was obtained through componental arrangement.Mixture of strainght chain alkanes (or n-alkanes) with C5-C120 was used as standard for correction of boiling point in the range of distillation from initial boiling point (IBP) to 750 ℃.Good repeatability was obtained by this method,giving values of standard deviation,at both the IBP and the final boiling point,less than 1 ℃,and values of RSD′s of various fraction yields less than 0.35%.Results obtained by this method were in consistency with those found by the method of true boiling point distillation.Yield differences between fractions under 500 ℃ were less than 2.5%.It was shown that the fractional distribution between 500-750 ℃ was valuable for further processing and utilization of the heavy fractions of crude oil.
中图分类号 O657
所属栏目 工作简报
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收稿日期 2009/4/23
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备注温利新(1973-),女,广东梅县人,高级工程师,硕士,研究方向为石油化工分析.
引用该论文: WEN Li-xin,LU Chun-qing,LIU Ning,LI Shi-ke. Determination of Fractional Distribution of Crude Oil by Gas Chromatography with Simulated Distillation[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2010, 46(6): 630~633
温利新,卢纯青,刘宁,黎仕克. 采用模拟蒸馏对原油馏分分布的色谱法测定[J]. 理化检验-化学分册, 2010, 46(6): 630~633
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参考文献
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【2】赵惠菊.原油沸点分布的高温气相色谱模拟蒸馏法测定[J].分析测试学报,2008,27(5):513-516.
【3】张斌,胡永胜,许平利.原油评价知识库的二次开发及应用[J].扬子石油化工,2007,22(1):21-25.
【4】温利新,梁洁虹,蔡明招.色谱模拟蒸馏方法测试渣油的馏分分布[J].分析测试学报,2007,26(2):270-273.
【5】温利新,刘天才.油漆工业用溶剂油作重油模拟蒸馏内标物的探讨[J].广石化科技,2003(2):31-34.
【6】中国石油化工集团公司人事部,中国石油天然气集团公司人事服务中心.炼油基础知识[M].北京:化学工业出版社,2007:33-49.
【7】王汀,左天存.原油中C3~C11 PNA组分及原油模拟蒸馏分析方法[J].陆相石油地质,1991(3):77-80.
【8】ASTM D5307Standard test method for determination of boiling range distribution of crude petroleum by gas chromatography[S].
【9】ASTM D7169Standard test method for boiling point distribution of samples with residues such as crude oils and atomspheric and vaccum residues by high temperature gas chromatography[S].
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