为更好地开发利用煤直接液化生成气,必须准确测定煤直接液化生成气各组分含量,分析了气相色谱法测定煤直接液化生成气组成的主要影响因素,如色谱柱程序升温方式、取样袋的选择和分流比的确定,确定最优的试验条件,建立了煤炭直接液化生...为更好地开发利用煤直接液化生成气,必须准确测定煤直接液化生成气各组分含量,分析了气相色谱法测定煤直接液化生成气组成的主要影响因素,如色谱柱程序升温方式、取样袋的选择和分流比的确定,确定最优的试验条件,建立了煤炭直接液化生成气组分分析的标准方法。结果表明,采用气相色谱法测定煤直接液化生成气的组分含量的最佳分析条件为:采用以15℃/min的升温速度从60℃升温至150℃,始温保持10 min,终温保持4 min的升温程序;复合膜取样袋取样;与FID相联的用于烃类分析,与TCD相连的用于无机气体分析,其载气均为氦气,流速为38 m L/min;有机烃气路分流比为50∶1,无机气体气路不分流。将标准气体进行8次平行分析表明,气相色谱法的相对误差不大于3.5%,样品回收率均在97%~102.03%,准确度和精密度良好,说明气相色谱条件适于分析煤直接液化生成气含量。展开更多
The composition of coal-derived light oil (IBP-220℃) was separated into 5 fractions by atmospheric distillation and analyzed by gas chromatography/mass spec- trometry (GC/MS).The light oil was made at 0.1 t/d coal di...The composition of coal-derived light oil (IBP-220℃) was separated into 5 fractions by atmospheric distillation and analyzed by gas chromatography/mass spec- trometry (GC/MS).The light oil was made at 0.1 t/d coal direct liquefaction bench scale unit (BSU) at China Coal Research Institute (CCRI).Six groups of organics,including acyclic hydrocarbon,alicyclic hydrocarbon,aromatics,phenols,polynuclear aromatics and heterocyclics,were found and 80 compounds were tentatively identified in total.Alicyclic hydrocarbon is the main component of the light oil compared to other groups whether in relative mass percentage or the number of compounds in group.The predominant oxy- gen-contained compound is phenols,and the nitrogen-containing compound is pyridine. No sulfur-containing compound is detected.展开更多
文摘为更好地开发利用煤直接液化生成气,必须准确测定煤直接液化生成气各组分含量,分析了气相色谱法测定煤直接液化生成气组成的主要影响因素,如色谱柱程序升温方式、取样袋的选择和分流比的确定,确定最优的试验条件,建立了煤炭直接液化生成气组分分析的标准方法。结果表明,采用气相色谱法测定煤直接液化生成气的组分含量的最佳分析条件为:采用以15℃/min的升温速度从60℃升温至150℃,始温保持10 min,终温保持4 min的升温程序;复合膜取样袋取样;与FID相联的用于烃类分析,与TCD相连的用于无机气体分析,其载气均为氦气,流速为38 m L/min;有机烃气路分流比为50∶1,无机气体气路不分流。将标准气体进行8次平行分析表明,气相色谱法的相对误差不大于3.5%,样品回收率均在97%~102.03%,准确度和精密度良好,说明气相色谱条件适于分析煤直接液化生成气含量。
基金the National Basic Reserch Program of China(2004CB217605)
文摘The composition of coal-derived light oil (IBP-220℃) was separated into 5 fractions by atmospheric distillation and analyzed by gas chromatography/mass spec- trometry (GC/MS).The light oil was made at 0.1 t/d coal direct liquefaction bench scale unit (BSU) at China Coal Research Institute (CCRI).Six groups of organics,including acyclic hydrocarbon,alicyclic hydrocarbon,aromatics,phenols,polynuclear aromatics and heterocyclics,were found and 80 compounds were tentatively identified in total.Alicyclic hydrocarbon is the main component of the light oil compared to other groups whether in relative mass percentage or the number of compounds in group.The predominant oxy- gen-contained compound is phenols,and the nitrogen-containing compound is pyridine. No sulfur-containing compound is detected.