用HD复合溶剂改善催化柴油安定性的研究

RESEARCH ON IMPROVING THE STABILITY OF CATALYTIC DIESEL FUEL BY HD COMPLEX SOLVENT

针对催化柴油安定性差问题 ,对其不安定组分和改善其安定性的方法进行了研究 ,结合炼油厂的生产实际 ,利用复合溶剂对催化柴油萃取精制的生产工艺进行了开发和试验。用HD复合溶剂对催化裂化柴油进行精制后 ,精制油的催速储存安定性沉渣和颜色均达到了优级轻柴油的标准 ,在剂油比为 1:5 0 0— 5 0 :5 0 0 ,精制油的收率为 99%以上 ,老化沉渣 <2 .5·10 2 mg/ml,老化色号不大于 3.5 ,实际胶质的降低率达到了 6 0 .1% ,氧化沉渣降低 77.6 % ,脱硫率 19.8% ,脱氮率 2 0 .3%。

The stable components of catalytic diesel fuel and the methods of improving its stability have been studied. The production process of extracting and refining the catalytic diesel fuel by complex solvent has been tested. Results indicate that the yield of refined diesel is over 99% when the ratio of solvent to oil is 1:500-50:500. After aging, the amount of sediments is less than 2.5mg/100ml and the color of the refined oil is not more than 3.5. The gum and oxidized sediments are reduced by 60.1% and 77.6% respectively. Also the percentage of removing nitrogen and sulfur is 19.8% and 20.3%.