毛细管多维气相色谱法分析炼厂气

Determination of the Refinery Gases by Complex Capillary Column Gas Chromatography

用ＨＰ６８９０）气相色谱仪，使用多孔层空心毛细管柱（ＰＬＯＴ），选用ＨＰ－ＰＬＯＴ／Ｐｏｒａｐａｃｋ Ｑ色谱柱测定ＣＯ２； ＨＰ－ＰＬＯＴ ５Ａ分子筛柱测定Ｏ２， Ｎ２， ＣＨ４； ＨＰ－ＰＬＯＴ／Ａｌ２Ｏ３柱测定有机烃类。采用３阀４柱色谱运行系统，用ＦＩＤ及ＴＣＤ分别检测烃类及无机气体组分。用色谱工作站控制气动切换阀切换气样走向及两种检测器数据的转换校正和归一化定量计算，用已知物对照法定性，测定了炼厂气中２０余种组分。其准确度和再现性良好。

A new gas chromatographyic method for the determination of refinery gases was described. The with was performed on model HP6890 gas chromatography. Hydrogen flame detector and thermal conductivity detector were used to detect gaseous hydrocarbons and inorganic gases respectively. The separation system consists of a HAYESE Q column(similar to GDX 102), and HP-PLOT Q column,an HP-PLOT(SA) column and an HP-PLOT/Al2O3 column,three valves and four column switching systems. The area normalization was used in quantitative calculation to obtain a better accuracy. With these columns mentioned above and programmed temperature, more than 20 components such as methane, ethane, ethylene, carafe dioxide, propane, oxygen, nitrogen, propylene and so on were determined, and the accuracy and reproducibility are satisfactory.