蒸馏-色谱法分析煤焦油中萘含量的研究  

Study on analysis of naphthalene content in coal tar with distillation chromatography

作　　者：秦云 余雷 张涛 喻婷 Qin Yun;Yu Lei;Zhang Tao;Yu Ting(Wuhan Pingmei WISCO United Coking Co.,Ltd.,Wuhan Hubei 430080,China)

机构地区：[1]武汉平煤武钢联合焦化有限责任公司,湖北武汉430080

出　　处：《煤化工》2024年第1期17-19,共3页Coal Chemical Industry

摘　　要：煤焦油中萘含量是焦油出厂检验的一个重要指标,针对色谱法分析煤焦油中萘含量时会堵塞色谱柱的问题,研究了用蒸馏-色谱法分析煤焦油中萘含量。采用自制的煤焦油蒸馏及馏出物保温装置,收集350℃前馏出物,以四氢萘作为内标物,通过气相色谱法分析出馏出物中的萘含量,进而计算出煤焦油中萘含量。试验结果表明:该方法具有良好的准确度和精密度,并且能够防止煤焦油堵塞色谱毛细管柱。Naphthalene content in coal tar is an important indicator of tar ex-factory test.Aiming at the problem that chromatographic analysis of naphthalene in coal tar would block the chromatographic column,the study was made to use distillation-chromatography to analyze the naphthalene content in coal tar.The coal tar was distilled by the insulation device,and the distillate below 350℃was collected.Tetrahydronaphthalene was used as the internal standard,the naphthalene content in the distillate was analyzed by gas chromatography,and then the naphthalene content in coal tar was calculated.The experimental results showed that this method had good accuracy and precision and could prevent coal tar from blocking the chromatographic capillary column.

关 键 词：煤焦油 蒸馏-气相色谱法 萘 保温装置 

分 类 号：TQ522.64[化学工程—煤化学工程]