利用Aspen Hysys优化常压塔操作条件生产高闪点喷气燃料

Using Aspen Hysys software to optimize operation conditions of atmospheric distillation column for producing high flash point jet fuel

利用流程模拟软件Aspen Hysys对250万t/a常减压蒸馏装置进行建模,通过改变常压塔操作条件研究了如何生产高闪点喷气燃料。将建好的常减压模型模拟数据与炼厂数据进行对比,发现二者偏差在可接受范围内,验证了常减压模型的可靠性。利用常减压模型考察了常压塔各操作条件对常一线产品闪点的影响,发现常顶油抽出量和常压塔各循环取热分配比例对常一线产品闪点影响最大。通过对操作参数进行优化,制定了一套用于生产闪点在60℃的高闪点喷气燃料的操作方案。

In order to produce jet fuel with high flash point by varying operational conditions of atmospheric distillation column,a 2.5 million t/a atmospheric and vacuum distillation plant is modeled by Aspen Hysys process simulation software.Comparing the simulation data of atmospheric and vacuum distillation model with actual data from refinery,it is found that the deviation between them is within an acceptable range,which verifies the reliability of atmospheric and vacuum distillation model.The influence of the operational conditions of atmospheric distillation column on flash point of kerosene fraction is investigated by using atmospheric and vacuum distillation model.It is found that the mass flow rate of top gasoline and the pump around heat extraction ratio distribution of atmospheric column have the greatest influence on the flash point of kerosene fraction.By optimizing these operating parameters,an operational conditions optimization scheme is developed for production of jet fuel with a flash point at 60℃.