劣质蜡油的氮化物分布研究

摘要/Abstract

摘要： 随着沸腾床、浆态床等新型渣油加氢裂化技术的工业应用，劣质蜡油产量急剧增加。加氢裂化技术是处理劣质蜡油最有效的方法之一，而实现劣质蜡油超深度加氢脱氮是劣质蜡油掺炼入加氢裂化原料油的主要技术难点。利用相关表征技术系统性地分析了直馏蜡油、浆态床蜡油、沸腾床蜡油和焦化蜡油的基本性质、烃类组成、氮化物组成和分布。分析结果表明：3种二次加工劣质蜡油中的芳烃含量基本相同，浆态床蜡油中的多环芳烃含量显著增高，而沸腾床蜡油中的单环和双环芳烃含量之和显著高于浆态床蜡油和焦化蜡油。浆态床蜡油和焦化蜡油中的氮化物具有“高含量、高DBE、低碳数和集中分布”的特点，沸腾床蜡油氮化物则具有“低含量、低碳数和分散分布”的特点。

关键词: 劣质蜡油, 烃类组成, 氮化物, 浆态床, 沸腾床

Abstract: With the development of novel residue hydrocracking technologies, such as slurry bed and ebullated bed, the production of inferior gas oil has sharply increased. Hydrocracking is the most effective technology to get the high value of inferior gas oil. The implementation of ultra-deep hydrodenitrogenation of inferior gas oil is the main technical difficulty in blending into the hydrocracking unit. The basic properties, hydrocarbon composition, and the distribution of nitrogen-containing compounds of four types of inferior gas oils were systematically analyzed using relevant characterization techniques. The results show that the total aromatic content of those inferior gas oil is similar, but the content of polycyclic aromatics in slurry-bed gas oil significantly increases, and the total content of single ring and double ring aromatics in ebullated-bed gas oil is higher than that of slurry bed gas oil and coker gas oil. The nitrogen-containing compounds of slurry-bed gas oil and coker gas oil have characteristics of high content, high DBE, low carbon number, and concentrated distribution. On the other hand, the nitrogen-containing compounds of ebullated-bed gas oil have characteristics of low content, low carbon number, and dispersed distribution.

Key words: inferior gas oil, hydrocarbon compositions, nitrogen-containing compounds, slurry bed, ebullated bed

张鹏飞赵广乐严张艳梁家林任亮. 劣质蜡油的氮化物分布研究[J]. 石油炼制与化工, 2025, 56(3): 134-141.

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