液化石油气标准物质的研究
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摘要
以液化石油气为代表的混合轻烃各组分的饱和蒸气压不同,如何对其准确地定量分析和溯源一直是石化行业的分析难题。研制了液化石油气的气体和液体标准物质,通过对比气体标准物质和液体标准物质在充装质量和量值准确性方面的差别,提出了采用活塞钢瓶制备液化石油气标准液体,保证了实际进样分析的相态一致性,提供准确的分析量值,提高了标准物质的使用周期。
It was a difficult problem to analyze and trace the exact value of light hydrocarbon mixtures such as liquefied petroleum gas(LPG)in petrochemical industry due to the difference of saturated vapor pressure of each component.In this paper,the gas and liquid reference material of LPG was prepared.Through comparing the filling quality and quantity value accuracy of two types of samples,the result showed that the LPG liquid reference material prepared by piston cylinder could ensure the actual phase consistency of sample analysis,and provide accurate analysis of the value and improve the using cycle of reference material.
It was a difficult problem to analyze and trace the exact value of light hydrocarbon mixtures such as liquefied petroleum gas(LPG)in petrochemical industry due to the difference of saturated vapor pressure of each component.In this paper,the gas and liquid reference material of LPG was prepared.Through comparing the filling quality and quantity value accuracy of two types of samples,the result showed that the LPG liquid reference material prepared by piston cylinder could ensure the actual phase consistency of sample analysis,and provide accurate analysis of the value and improve the using cycle of reference material.
引文
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[7]王楼明,方红,叶锐钧,等.毛细管气相色谱法对液化石油气组分的测定[J].分析测试学报,2009,28(11):1335-1339.
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[14]方正,周鑫,霍玉朋,等.电子质量比较器在重量法配气中的称量不确定度评定[J].中国测试.2016,42(12):38-41.
[15]周鑫,董了瑜,李志昂,等.氮气中22组分挥发性卤代烃气体标准物质分析方法研究[J].化学研究与应用,2017,29(6):772-779.
[2]张文斌.袁海鸿.戴海林.轻烃芳构化工艺技术的研究[J].石油化工设计,2008,25(3):19-22.
[3]黎小辉,朱建华,郝代军.液化石油气芳构化反应体系的热力学分析[J].石油与天然气化工,2010,39(6):465-471.
[4]付秀勇,许莉娜.对液化石油气标准的几点认识与探讨[J].石油与天然气化工,2011,40(2):160-164.
[5]张涛,曲虎,张义贵,等.液化石油气国内外标准的探讨[J].当代化工,2014,43(11):2274-2278.
[6]郭景云.液化石油气组成色谱分析技术探讨[J].石油与天然气化工,2015,44(1):87-92.
[7]王楼明,方红,叶锐钧,等.毛细管气相色谱法对液化石油气组分的测定[J].分析测试学报,2009,28(11):1335-1339.
[8]王红卫,黄伟,陆彩霞.液化石油气分子量测定方法的研究[J].分析科学学报,2009,25(2):197-200.
[9]田贯三,江亿.液化石油气自然气化钢瓶中组分变化的模拟计算[J].燃料化学学报,2003,31(5):480-484.
[10]邓凡锋,周鑫,李志昂,等.液化石油气物性规律的研究[J].石油与天然气化工,2016,46(5):81-85.
[11]ATKINS P W.Physical Chemistry[M].Oxford:Oxford University Press,1990:88-97.
[12]KRUSE H,RINNE F.International Refrigeration ConferenceEnergy Efficiency and New Refrigerants[M].Purdue:Purdue University,USA,1992.621-630.
[13]中国机械工业联合会.气体分析校准用混合气体的制备称量法:GB/T 5274-2008[S].北京:中国标准出版社,2009.
[14]方正,周鑫,霍玉朋,等.电子质量比较器在重量法配气中的称量不确定度评定[J].中国测试.2016,42(12):38-41.
[15]周鑫,董了瑜,李志昂,等.氮气中22组分挥发性卤代烃气体标准物质分析方法研究[J].化学研究与应用,2017,29(6):772-779.