不同蒸汽裂解原料评价及混合裂解研究  

Evaluation of different steam cracking feedstocks and study on mixed feedstocks cracking

作　　者：廖思航 单书峰 李平 曾兴业 吴世逵 LIAO Si-hang;SHAN Shu-feng;LI Ping;ZENG Xing-ye;WU Shi-kui(Faculty of Chemical Engineering,Guangdong University of Petrochemical Technology,Maoming 525000,China;Sinopec Maoming Petrochemical Company,Maoming 525000,China)

机构地区：[1]广东石油化工学院化学工程学院,广东茂名525000 [2]中国石油股份有限公司茂名分公司,广东茂名525000

出　　处：《现代化工》2024年第S01期185-190,共6页Modern Chemical Industry

基　　金：广东省基础与应用基础研究基金项目(2020A1515110729,2021A1515010278);青年创新人才项目(2018KQNCX158);广东石油化工学院博士启动项目(2020bs002);茂名绿色化工研究院“扬帆计划”2022年度科技创新项目(MMGCIRI-2022YFJH-Y-052)。

摘　　要：对丙烷和丁烷进行模拟裂解;对典型的石脑油、煤油和柴油原料进行裂解评价,对比分析原料物性对裂解产物分布的影响;最后在石脑油中掺杂10 wt%和20 wt%柴油进行共裂解评价。结果表明,轻质原料裂解性能优于重质原料,轻烃原料混合裂解时异构烷烃含量不宜过高,正构烷烃含量高的石脑油原料和芳烃指数(BMCI)小,链烷烃含量越高的煤油和柴油原料裂解性能较好,石脑油中加入少量柴油混合裂解对高附加值产物收率影响较小。Steam cracking is the most mature process for the production of light olefins,which is the core of the modern petrochemical industry.In this work,the cracking of propane and butane is simulated.Typical cracking feedstocks such as naphtha,kerosene,and diesel fuel are evaluated,and the influences of feedstocks physical properties on the distribution of the cracking products are comparatively analyzed.Co⁃cracking of naphtha blended with 10 wt.%and 20 wt.%of diesel fuel respectively is evaluated.Study results show that the cracking performance of light feedstocks is better than that of heavy feedstocks.The content of isomeric alkanes in light hydrocarbon feedstocks should not be too high in mixed cracking.Naphtha feedstocks with high content of n⁃alkanes,and kerosene and diesel feedstocks with small BMCI and higher chain alkane content exhibit better cracking performance.When a small amount of diesel fuel is added into naphtha for cracking,the yield of high value⁃added products is affected slightly.

关 键 词：蒸汽裂解 轻质烯烃 共裂解 裂解原料 高附加值产物 

分 类 号：TQ221.21[化学工程—有机化工]