The Preparation of High-Density-Stability Jet Fuel and Its Properties

Main components,distillation course and distillation cuts proportion of high density fuels were systematically designed.RP-3 aviation kerosene,10~# and 35~# diesel fuel were chosen as the basic fuel oils.By means of atmospheric distillation and cutting,a series of direct distillation cuts were obtained.Distillation cuts with good properties were selected and blended in different proportion.Above blended fuels were further refined and modified.Finally,high-density-stability fuels were prepared.The density of these fuels is 8%～10% higher than that of RP-3 aviation kerosene which is applied widely in China at present and whose density is 779 kg/m~3.The other main properties of fuels such as flash point,freezing point,net thermal value and so on were measured.The results show that they all reach to the request of Russia military standard ГΟCΤ12308-80.Flash point is increased from 38 ℃(current flash point of RP-3 jet fuel) to 50 ℃,freezing point is controlled within-50 ℃.After being refined,the content of solid partibles,aromatics,sulfur and mercaptan is obviously decreased,the removal ratio of solid particles reaches to 38%～51%,mass fraction of aromatics is less than 10%,mass fraction of sulfur is below 0.6 μg/g and mass fraction of mercaptan is not over 4 μg/g.Besides,the result of copper corrosion test indicates that it is eligible.Under the presupposition of density being effectively increased,net thermal value of fuels is near to 42 900 kJ/kg.