In response to the chemical industry's eco-friendly and high-value-added requirements, FCC slurry oil (SO) has been used as a raw material for novel solid carbon materials. As one of the most important chemically active intermediates and products in the FCC process, olefins may have a significant impact on the quality of the carbon materials produced. However, the existence and distribution of olefins have not been discussed. In this paper, olefinic hydrocarbons were first innovatively identified as important compounds that do exist in SO, and their distributions in sub-fractions below 500 °C, classified with the types and carbon numbers, were analyzed. However, there are great limitations for the existing analytical methods in the distribution detection of olefins in the whole fractions of heavy oils. In order to solve this problem, a newly-developed analytical method has been developed. Two different separation techniques were implemented to separate SO into six sub-fractions and eight group compositions, according to boiling point and molecular polarity respectively, before the analysis of olefin distribution for higher accuracy. The proposed method has been further verified by the GC × GC-TOFMS method and proved to have superior reliability. The olefinic carbons in the fraction of 350–400 °C possess the highest content among the detected narrow fractions, up to 1.55%, which decreases gradually with the increase of boiling points, and the first three sub-fractions between 350–470 °C take most of the olefinic carbons in SO, reaching around 74%.

为响应化工行业对环境友好和高附加值的要求，FCC浆油（SO）已被用作新型固体碳材料的原料。作为催化裂化过程中最重要的化学活性中间体和产物之一，烯烃可能对所生产的碳材料的质量产生重大影响。然而，尚未讨论烯烃的存在和分布。本文首先创新性地将烯烃类化合物确定为SO中确实存在的重要化合物，并分析了它们在低于500°C的亚馏分中的分布，并按类型和碳数进行了分类。然而，现有的分析方法在重油全馏分中烯烃的分布检测方面存在很大的局限性。为了解决这个问题，开发了一种新开发的分析方法。在分析烯烃分布之前，采用两种不同的分离技术将 SO 分别根据沸点和分子极性分为 6 个亚组分和 8 个组组成，以提高准确度。所提出的方法已通过 GC × GC-TOFMS 方法进一步验证，并证明具有卓越的可靠性。350-400 ℃馏分中烯碳含量最高，可达1.55%，随沸点升高逐渐降低，350-470 ℃前三个亚馏分吸收 SO 中的大部分烯烃碳，达到 74% 左右。在分析烯烃分布之前，采用两种不同的分离技术将 SO 分别根据沸点和分子极性分为 6 个亚组分和 8 个组组成，以提高准确度。所提出的方法已通过 GC × GC-TOFMS 方法进一步验证，并证明具有卓越的可靠性。350-400 ℃馏分中烯碳含量最高，可达1.55%，随沸点升高逐渐降低，350-470 ℃前三个亚馏分吸收 SO 中的大部分烯烃碳，达到 74% 左右。在分析烯烃分布之前，采用两种不同的分离技术将 SO 分别根据沸点和分子极性分为 6 个亚组分和 8 个组组成，以提高准确度。所提出的方法已通过 GC × GC-TOFMS 方法进一步验证，并证明具有卓越的可靠性。350-400 ℃馏分中烯碳含量最高，可达1.55%，随沸点升高逐渐降低，350-470 ℃前三个亚馏分吸收 SO 中的大部分烯烃碳，达到 74% 左右。所提出的方法已通过 GC × GC-TOFMS 方法进一步验证，并证明具有卓越的可靠性。350-400 ℃馏分中烯碳含量最高，可达1.55%，随沸点升高逐渐降低，350-470 ℃前三个亚馏分吸收 SO 中的大部分烯烃碳，达到 74% 左右。所提出的方法已通过 GC × GC-TOFMS 方法进一步验证，并证明具有卓越的可靠性。350-400 ℃馏分中烯碳含量最高，可达1.55%，随沸点升高逐渐降低，350-470 ℃前三个亚馏分吸收 SO 中的大部分烯烃碳，达到 74% 左右。