Study of the Influences on Heteroatomic Compounds Composition for the Diesel Fuel's Lubricity

Diesel fuel lubricity problems caused by low sulfur,low aromatic is more and more outstanding. Hydrogenation diesel oil was as the research object. After adding different sulfur and oxygen compounds,diesel fuel lubricity was tested. The results show that influences on different sulfur compounds for diesel lubricity are different,and the oxygen acid compounds are one of the main materials to improve diesel lubricity. The function of mixture of sulfur and oxygen compounds to improve the lubrication performance is different. Then,two kinds of anti-wear agent were added into hydrogenation diesel,and the infrared analysis was carried out on the anti-wear agent. The results show that unsaturated acid agent is better than the saturated acid and long-chain unsaturated acid is better than short chain unsaturated acid.