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本研究应用旋转氧弹法、高压差示扫描量热法研究了大庆石化公司、兰州石化公司和克拉玛依石化公司生产的6种加氢润滑油基础油的氧化安定性及其对含硫酚类无灰抗氧剂的感受性,并利用成焦板、热管、动态微氧化、薄层氧化等模拟评定方法考察了该抗氧剂在5w/30SJ汽油机油和CH-4柴油机油中的抗氧化性能。研究结果表明,含硫酚抗氧剂在6种加氢基础油中具有优良的抗氧化作用,适合添加在以这几种加氢油为主的润滑油中。 相似文献
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利用旋转氧弹法研究了不同基属原油生产的6种加氢润滑油基础油烃类组成与氧化安定性的关系以及各种基础油对抗氧剂的感受性。结果表明,大庆石化分公司用石蜡基原油生产的加氢基础油和兰州石化分公司用中间基原油生产的加氢基础油的抗氧化性能较差;基础油粘度指数越高,抑制粘度增长的能力越强,氧化后粘度增长越小;加氢基础油氧化后,链烷烃、总环烷烃含量都有所下降,芳烃及胶质含量增加;含硫酚抗氧剂在几种加氢基础油中有较好的抗氧化效果,感受性最好。Ⅱ、Ⅲ类基础油和Ⅳ类基础油对抗氧剂感受性相当,明显好于Ⅴ类基础油。 相似文献
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加氢处理润滑油基础油各组分对光安定性的影响 总被引:2,自引:1,他引:1
将经紫外光照前后的加氢处理润滑油基础油分离为饱和烃、轻质芳烃、中质芳烃、重质芳烃和极性组分,分别采用薄层色谱、质谱和紫外吸收光谱分析了各组分的烃组成、硫和氮含量的变化,并通过将从原料油中分离出的各组分反加到光安定性好的饱和烃中,试验验证了加氢处理润滑油基础油中的重质芳烃和极性组分是光不安定组分,其中含有硫、氮的芳香杂环化合物光安定性差。 相似文献
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加氢润滑油基础油光安定性研究进展 总被引:10,自引:3,他引:7
加氢处理基础油与溶剂精制基础油相比具有硫、氮含量低,颜色浅,粘度指数高,挥发性低,饱和烃含量高,对添加剂的感受性好等优点。但是,加氢处理润滑油基础油的一个明显缺点就是其光安定性差,即在有氧条件下通过光照(有时也需加热),油品颜色加深、透明度变差,继而有絮凝物或沉淀生成。文章综述了国内外有关加氢润滑油基础油光安定性的原因和解决办法的研究进展情况。 相似文献
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选用不同基属原油生产的六种加氢润滑油基础油为原料,研究了它们的物理性质,并采用柱色谱和质谱法详细研究了各种加氢基础油烃类组成。结果表明:各种加氢基础油的S、N含量很低,饱和烃含量很高,芳香烃含量很低;随加氢基础油H/C摩尔比的增加,加氢基础油粘度指数相应增加;加氢基础油中环烷烃含量越高,粘度指数越低,链烷烃含量越高,加氢基础油粘度指数越高。 相似文献
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《Petroleum Science and Technology》2013,31(11-12):1887-1895
Abstract In this article, oxidation stabilities of catalytically-cracked diesel oil extracted with several solvents were studied respectively. The experimental results showed that double-solvent extraction was the better method than others, in which furfural containing transition metal ion was used as the first extraction solvent and the 95% ethanol solution was the second extraction solvent. During the course of accelerated storage test, the amount of sediment was reduced from 27.56 mg/100 mL to 0.43 mg/100 mL, and met the requirement of premium grade diesel oil. Under the experimental condition: shaking time of 3 min, the volume ratio of solvent to oil of one and operating temperature 30°C, the extraction result is most satisfied. The color and existent gum reached the standard of premium grade diesel oil. The removal rate of sulfur was up to 74.5%, the removal rate of nitrogen 93.8%. The cetane number of catalytically-cracked diesel oil was enhanced from 37.3 to 51.2. The oxidation stability was improved greatly after being treated. 相似文献
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In this article, oxidation stabilities of catalytically-cracked diesel oil extracted with several solvents were studied respectively. The experimental results showed that double-solvent extraction was the better method than others, in which furfural containing transition metal ion was used as the first extraction solvent and the 95% ethanol solution was the second extraction solvent. During the course of accelerated storage test, the amount of sediment was reduced from 27.56 mg/100 mL to 0.43 mg/100 mL, and met the requirement of premium grade diesel oil. Under the experimental condition: shaking time of 3 min, the volume ratio of solvent to oil of one and operating temperature 30°C, the extraction result is most satisfied. The color and existent gum reached the standard of premium grade diesel oil. The removal rate of sulfur was up to 74.5%, the removal rate of nitrogen 93.8%. The cetane number of catalytically-cracked diesel oil was enhanced from 37.3 to 51.2. The oxidation stability was improved greatly after being treated. 相似文献
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对6种不同类型汽轮机油进行了高温氧化试验。在实验过程中采用旋转氧弹、FTIR法、RULER以及酸值等试验方法对汽轮机油氧化过程中的氧弹保持性、抗氧剂消耗、油泥析出、酸值增加等进行了考察。分析了汽轮机油配方组成对其氧化安定性的影响,各种测试方法在分析油品氧化情况时具有的特点,提出了监测汽轮机油氧化衰减是比较科学的方法。 相似文献
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讨论了上海高桥分公司炼油厂3套催化装置分别由汽油和柴油方案加工的催化柴油的氧化安定性。通过调整优化装置的操作条件、催化柴油的调合比例及加稳定剂等方法可有效改善柴油的氧化安定性。 相似文献
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文章采用压力差示扫描量热法(PDSC),分别以动态法和静态法两种方式,研究了加入3种典型的酚型抗氧剂T501、L135和L115后,复合锂基润滑脂氧化安定性的改善效果;以及不同的抗氧剂含量对复合锂基脂的氧化安定性的影响。结果表明:加入这3种抗氧剂后,复合锂基脂的起始氧化温度和氧化诱导时间均有不同程度的提高,其中加入硫代双酚型抗氧剂L115的抗氧化性能最佳;酯类单酚型抗氧剂L135次之;普通单酚型抗氧剂T501最差。热重分析(TG)结果表明,3种抗氧剂分子的热稳定性也遵从这一顺序,说明抗氧剂具有较好的热稳定性有助于在油脂中发挥更好的抗氧化性能。 相似文献
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Abstract Lubricating oil is generated throughout the year and collected in central locations in many communities. The studied lube oil has a boiling range of 280°C–400°C, and its physical properties were determined according to standard test methods in ASTM and International Petroleum. Solvent extraction by furfural was carried out using different feed ratios. The best ratio was 1:4 (sample:furfural). The oil was separated into its components using liquid column chromatography. It was found that the aromatic contents decreased. The structure group analysis was determined by infrared spectroscopy and refractive index-density-molecular weight methods. The oxidation stability was carried out according to ASTM method D-48 using an inhibitor. The inhibitor used was a nonionic surfactant, alkanolamide. The results showed that the oxidation stability improved using the inhibitor. 相似文献