油砂沥青改质所得中间馏分生产柴油和喷气燃料的研究

对Athabasca油砂沥青进行改质可以得到轻瓦斯油窄馏分,研究了将这些轻瓦斯油窄馏分作为柴油和喷气燃料时的性能。分析了轻瓦斯油窄馏分的馏程、十六烷值、烟点以及其他性质如芳烃含量、苯胺点、硫氮含量之间的关系。研究表明,选择合适的加工流程、选取恰当的馏分可生产出符合当前严格环境法规和未来产品规格要求的柴油和喷气燃料。同时,回归出了预测十六烷值和烟点的新型关联式,其变量包括密度、模拟蒸馏馏程、采用超临界流体色谱法测定的单环芳烃含量及总芳烃含量;这些关联式可用来预测油砂沥青改质得到的宽馏程中间馏分的十六烷值和烟点。

Diesel and Jet Fuels from Bitumen-derived Middle Distillates

Narrow fractions of light gas oils obtained from various upgrading processes of Athabasca oilsands bitumen were investigated as diesel and jet fuels. The relationship among the boiling range, cetane number, smoke point, and other properties such as aromatics content, aniline point, and the sulfur and nitrogen content was also studied. The study reveals that when appropriate processes and distillation boiling ranges are selected, oilsands bitumen can produce diesel and jet fuels that meet stringent environmental regulations and future product specifications. New correlations to predict CN and smoke point were developed as a function of density, boiling ranges by simulated distillation, and mono- and total aromatics by supercritical fluid chromatography. The correlations apply to bitumen-derived middle distillates that have a wide range of boiling points.