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

摘要： 对多家炼厂的催化裂化(FCC)柴油采用按体积切割馏分段的方式,对各个馏分段的碱性氮含量和总硫含量进行测试分析。结果表明,在FCC柴油中,总硫含量随着沸点的升高而升高,但碱性氮含量却随着沸点的升高而降低;以直馏柴油作对照实验,结果表明,在直馏柴油中,碱性氮和总硫含量都随沸点的升高而升高。在FCC柴油0%~60%(体积分数)的轻馏分段中集中了78.6%~86.9%的碱性氮,而在60%~100%(体积分数)的重馏分段中集中了49%~56%的硫化物。在FCC柴油中碱性氮主要集中在轻馏分,硫化物主要集中在重馏分。

关键词: FCC柴油 , 总硫 , 碱性氮 , 分布规律