三甘醇中苯、甲苯、乙苯和二甲苯的气相色谱分离技术

Gas Chromatographic Separa-tion Technique for Benzene,Toluene,Ethylbenzene and Dimethyl Benzene in Triethylene-Glycol (TEG)

天然气中苯、甲苯、乙苯和二甲苯在醇脱水过程中同水份一道吸附于三甘醇溶液中。三甘醇溶液加热再生时，苯、甲苯、乙苯和二甲苯随水蒸汽一起排放入大气，污染环境。本文介绍了利用气相色谱技术分离三甘醇中苯、甲苯、乙苯和二甲苯的方法，对毛细柱和填充柱的分离效果进行了比较。HP－1毛细柱的分离效果满足定量分析要求。

The benzene, toluene, ethylbenzene and dimethyl benzene in natural gas are absorbed by TEG solution with water vapor during dehydration, these compounds are exhausted to air with water vapor when regeneration of TEG solution by heating, which causes environmental pollution. This paper introduces a separation method for benzene, toluene, ethylbenzene and dimethyl benzene in TEG by use of gas chromatography technique, and makes a comparison of separating efficiency between capillary column and packed column. The results show that the separating efficiency of capillary column HP - 1 meets the demands of quantitative analysis.