硫酸法烷基化油辛烷值影响因素分析与优化策略  

Analysis of Factors Affecting Octane Number in Sulfuric AcidAlkylation and Optimization Strategies

作　　者：赵阳[1] 焦大勇[1] 杨忠义[1] Zhao Yang;Jiao Dayong;Yang Zhongyi(PetroChina Dalian Petrochemical Company,Dalian,Liaoning 116031)

机构地区：[1]中国石油天然气股份有限公司大连石化分公司,辽宁大连116031

出　　处：《石油化工技术与经济》2025年第2期28-32,共5页Technology & Economics in Petrochemicals

摘　　要：烷基化装置利用石油液化气中的异丁烷、丁烯在催化剂浓硫酸的作用下进行加成反应,生成烷基化油,所产烷基化油辛烷值高、零芳烃、零烯烃、硫质量分数低、抗爆指数高。辛烷值是衡量烷基化油产品质量的一项关键指标。2023年某石化公司烷基化装置烷基化油研究法辛烷值平均为97.60,2024年为97.44。文章针对该装置的硫酸法工艺展开了全面细致的研究,对原料组成情况、反应烷烯比、反应温度、硫酸质量分数等影响辛烷值的因素进行了分析总结,并提出了优化策略。Alkylation units utilize isobutane and butenes from liquefied petroleum gas to undergo addition reactions under concentrated sulfuric acid catalysis,producing alkylate with high octane number,zero aromatics,zero olefins,low sulfur content,and high anti-knock index.The octane number serves as a crucial quality indicator for alkylate products.In 2023,the average research octane number(RON)of alkylate from a petrochemical company's unit was 97.60,decreasing to 97.44 in 2024.This paper conducts comprehensive research on the sulfuric acid alkylation process,analyzing key factors affecting octane number including feedstock composition,isobutane/olefin ratio,reaction temperature,and sulfuric acid concentration,while proposing corresponding optimization strategies.

关 键 词：烷基化油 辛烷值 烷烯比 反应温度 

分 类 号：TE624[石油与天然气工程—油气加工工程]