论文部分内容阅读
使用气相色谱及色谱 -质谱联用仪对由低碳烃直接合成芳烃的液相产物进行了全分析。色谱分析结果表明 ,液体产物中非芳烃 <0 .2 % ,BTX占 90 %以上 ,双环芳烃约 7% ,其余 2 %～ 3 %为多甲基苯。GC/MS对液体产品的定性和半定量分析表明 ,微量杂质为稠环芳烃 ,总量不超过 0 .2 %。对1 0 0ml反应装置丙烷芳构化液体产物进行简单蒸馏切割成苯、甲苯、二甲苯等几个馏分 ,并对其中的苯馏分进一步作了 40块理论塔板的精密蒸馏 ,对所得精苯测定结晶点为 5.47℃ ,达到国家标准。以丙烷芳构化为例 ,每吨原料可得精苯近 1 3 0kg。为该过程的开发利用提供基础数据。
Liquid-phase products of the direct synthesis of aromatic hydrocarbons from low-carbon hydrocarbons were fully analyzed using gas chromatography and mass spectrometry. The results of chromatographic analysis showed that non-aromatic hydrocarbons were less than 0.2%, BTX accounted for more than 90%, bicyclic aromatic hydrocarbons about 7% and the remaining 2% -3% were polymethylbenzene. Qualitative and semi-quantitative analysis of liquid products by GC / MS showed that the trace impurities were condensed aromatic hydrocarbons, the total amount of which did not exceed 0.2%. A simple distillation of the propane aromatization liquid product of the 100ml reaction apparatus was used to cut into several fractions such as benzene, toluene and xylene. The benzene fraction of the propane was further refined by 40 theoretical plates. The obtained refined benzene Determination of crystallization point of 5.47 ℃, to the national standard. Aromatization of propane as an example, each ton of raw material available fine benzene nearly 130kg. Provide basic data for the development and utilization of this process.