组合工艺改进页岩油柴油的色度和安定性

Combined process for improving color and stability of diesel distillate from shale oil

针对页岩油柴油色度及氧化安定性差的问题，采用自制的复合脱氮剂进行脱氮处理，在络合剂质量分数为3％，络合反应时间为3．0min，络合反应温度为50℃，助剂加入量为1：1，静置时间为20．0min的条件下，碱氮脱除率可达到95．17％，精制油色度得到改善。脱氮页岩油柴油采用醇和添加剂进一步精制，在室温，剂油体积比为1：2，添加剂质量分数为0．2％的条件下，精制油色度和氧化安定性等指标均符合0^#柴油的标准要求，总收率可达80％以上。

In order to improve color and oxidation stability of diesel distillate from Fushun shale oil, pre-treatment of denitrification is done by using self-developed composite denitrogenation agent. Removal rate of basic nitride is up to 95.17% and the appearance color is improved under the following conditions ：0.03 volume ratio of complex agent to oil, 3.0 minutes of reaction time,50℃ of reaction temperature, 1：1 volume ratio of the complex agent to assistant, and 20. 0 minutes of settlement time, Further refining on denitrified diesel distillate is carried out with alcohol as additive. At room temperature,with 1：2 volume ratio of solvent and oil, and 0. 2% of alcohol, the color and oxidation stability of refined diesel oil can meet quality standard requirements of 0^# diesel oil. The total yield of refined shale oil diesel distillate obtained from the combined process can reach up to 80%.