气相色谱法测定20万t/a焦炉气制甲醇系统气体组分的应用
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摘要
焦炉气制甲醇生产中各气相组分的准确测定有利于稳定控制工艺参数,为此益达化工采用气相色谱法,对20万t/a焦炉气制甲醇生产中的系统气组分进行了分析。结果显示,采用气相色谱法分析转化气的相对标准偏差小于0.45%,加标回收率88.08%～100.0%;焦炉气、合成气的相对标准偏差小于0.52%,加标回收率97.70%～111.72%,符合GB/T 10410—2008对分析结果重复性的要求。并通过统计转化气、入塔气和循环气等生产数据,得到了可作为判断气相色谱分析结果是否可信的经验关系。
Accurate determination of gas phase components in coke oven gas to methanol is conducive to stable control of process parameters.For this reason,Yida Chemical Co.,Ltd.used gas chromatography method to analyze the systematic gas components in 200 000 t/a coke oven gas to methanol project.The results showed that the relative standard deviation of converted gas was less than 0.45%,and the recovery rate was 88.08%-100.0%.The relative standard deviation of coke oven gas and syngas was less than 0.46%,and the recovery rate was 97.70%-111.72%.The results met the repeatability requirements of GB/T10410—2008 on analysis results.Based on the production data of converted gas,tower inlet gas and circulating gas,an empirical relation was obtained to judge whether the results of gas chromatography analysis were credible or not.
Accurate determination of gas phase components in coke oven gas to methanol is conducive to stable control of process parameters.For this reason,Yida Chemical Co.,Ltd.used gas chromatography method to analyze the systematic gas components in 200 000 t/a coke oven gas to methanol project.The results showed that the relative standard deviation of converted gas was less than 0.45%,and the recovery rate was 88.08%-100.0%.The relative standard deviation of coke oven gas and syngas was less than 0.46%,and the recovery rate was 97.70%-111.72%.The results met the repeatability requirements of GB/T10410—2008 on analysis results.Based on the production data of converted gas,tower inlet gas and circulating gas,an empirical relation was obtained to judge whether the results of gas chromatography analysis were credible or not.
引文
[1]彭水英,赵丽颖,王玉洁.合成气中甲烷、一氧化碳、二氧化碳、氢气的气相色谱分析[J].四川化工,2013,16(1):38-40.PENG S Y,ZHAO L Y,WANG Y J.A Method to Detect the Content of Methane,Carbon Monoxide,Carbon Dioxide and Hydrogen in Syngas[J].Sichuan Chemical Industry,2013,16(1):38-40.
[2]王伟勇,杨渺.气相色谱仪在焦炉煤气分析中的应用[J].山东化工,2014,43(8):72-75,77.WANG W Y,YANG M.Application of Gas Chromatography in the Analysis of Coke Oven Gas[J].Shandong Chemical Industry,2014,43(8):72-75,77.
[3]孙利龙,莫忠栓.焦炉煤气组分气相色谱分析方法的研究[J].冶金动力,2015(3):5-7.SUN L L,MO Z S.A Study on the Gas Chromatographic Analysis for Coking Gas Composition[J].Metallurgical Power,2015(3):5-7.
[4]中国市政华北设计院.GB/T 10410-2008人工煤气和液化石油气常量组分气相色谱分析法[S].北京:中国标准出版社,2009.
[2]王伟勇,杨渺.气相色谱仪在焦炉煤气分析中的应用[J].山东化工,2014,43(8):72-75,77.WANG W Y,YANG M.Application of Gas Chromatography in the Analysis of Coke Oven Gas[J].Shandong Chemical Industry,2014,43(8):72-75,77.
[3]孙利龙,莫忠栓.焦炉煤气组分气相色谱分析方法的研究[J].冶金动力,2015(3):5-7.SUN L L,MO Z S.A Study on the Gas Chromatographic Analysis for Coking Gas Composition[J].Metallurgical Power,2015(3):5-7.
[4]中国市政华北设计院.GB/T 10410-2008人工煤气和液化石油气常量组分气相色谱分析法[S].北京:中国标准出版社,2009.