论文部分内容阅读
在２９３～３５３Ｋ，０．１１～０．２５ＭＰａ氧压、无光照和Ｃｕ催化条件下详细考察了大庆直馏柴油和焦化加氢柴油的吸氧氧化性能及其在吸氧氧化过程中理化性能的变化。结果表明，随温度的升高或氧压的增加，柴油的吸氧量、吸氧反应总包速度常数和总包最大吸氧量增加，而随着吸氧量的增加，它们的酸度增大，正戊烷不溶物增多，颜色变深。在相同的吸氧氧化条件下，焦化加氢柴油的吸氧量明显高于大庆直馏柴油，因此，后者的吸氧安定性能较好。根据反应活性基团理论提出了柴油吸氧反应动力学模型，较好地解释了柴油的吸氧变化规律，吸氧量理论计算值与实测值相吻合。笔者提出的吸氧安定性因子能准确反映不同种类柴油的吸氧安定性能的差别，可用以评价柴油的吸氧安定性能
Under the conditions of 293 ~ 353K, 0.11 ~ 0.25MPa oxygen pressure, no light and Cu catalysis, the oxygen absorption and oxidation performance of Daqing straight-run diesel and coker hydrogenated diesel oil were investigated in detail and their physicochemical properties Variety. The results showed that with the increase of temperature or the increase of oxygen pressure, the oxygen uptake of oxygen, the rate constant of total oxygen uptake and the maximum oxygen uptake of the total oxygen increased, while their acidity increased with the increase of oxygen uptake , N-pentane insoluble increased, the color becomes darker. Under the same oxygenation condition, the oxygen uptake of coker hydrogenated diesel is obviously higher than that of Daqing straight-run diesel oil, therefore, the latter has better oxygen-absorbing stability. Based on the theory of reactive groups, a kinetic model of diesel oxygen absorption reaction was proposed, which can well explain the change law of oxygen absorption of diesel oil. The calculated theoretical oxygen absorption value is consistent with the measured value. The oxygen stability factor proposed by the author can accurately reflect the difference of the oxygen-absorbing and stabilizing properties of different types of diesel and can be used to evaluate the oxygen-absorbing stability of diesel oil