关键词: FCC柴油 , 总硫 , 碱性氮 , 分布规律

Abstract: Basic nitrogen and sulfur contents in each fraction of fluid catalytic cracking diesel (FCC) from numerous refineries were analyzed by volumecutting method. The results show that sulfur contents rise and basic nitrogen contents decline with boiling point elevation in the FCC diesel. The comparison experiments of straightrun diesel show that both basic nitrogen and sulfur contents rise with boiling point elevation. In the FCC diesel, the basic nitrogen contents in the light fractions of 0%~60% (volume percent) account for 78.6%~86.9% of total basic nitrogen contents, and sulfur contents in the heavy fractions of 60%~100% (volume percent) account for 49%~56% of total sulfur contents. Those indicate that basic nitrides and sulfides concentrate in light fractions and heavy fractions, respectively.

Key words: Fluid catalytic cracking diesel,    ,  Sulfied,    , Basic nitride,    ,  Regularity of distribution