摘要
采用实沸点蒸馏法对中国石油哈尔滨石化分公司催化裂化(FCC)汽油进行了窄馏分切割,归纳分析全馏分及各切割窄馏分段的族组成、辛烷值、总硫含量和硫形态分布规律;采用等体积饱和浸渍法制备了ZnLaNiMo/ZSM-5加氢改质催化剂,采用XRD、N_(2)吸附-脱附、吡啶红外光谱等手段对该催化剂进行表征,并分别以FCC汽油不同窄馏分及其混合馏分为原料考察ZnLaNiMo/ZSM-5/γ-Al_(2)O_(3)催化剂的加氢改质性能。结果表明:窄馏分中烯烃质量分数为6.39%~44.78%,烯烃含量随着馏分沸点的升高而显著降低,FCC汽油中约80%以上的烯烃集中在<115℃的轻馏分中,主要是C_(5)~C_(8)烯烃;ZnLaNiMo/ZSM-5加氢改质催化剂的比表面积、孔径和孔体积分别为272.9 m 2/g、7.28 nm和0.25 cm^(3)/g,采用该催化剂加氢改质处理Cut-2~Cut-5混合馏分时,在反应压力2.0 MPa、体积空速1.5 h^(-1)、氢/油体积比300、反应温度340℃的条件下,加氢脱硫率为62.5%,加氢改质产物的烯烃体积分数降低了12.04%、研究法辛烷值增加1.14,说明ZnLaNiMo/ZSM-5加氢改质催化剂同步具有加氢脱硫、大幅降烯烃和保持辛烷值三重功能。
The narrow fraction cutting of PetroChina Harbin Petrochemical Company′s catalytic cracking(FCC)gasoline was carried out using true boiling-point distillation method,and the group composition,octane number,total sulfur content,and distribution patterns of sulfur forms of the whole fraction and each cut narrow fraction segment were summarized and analyzed.Moreover,the ZnLaNiMo/ZSM-5 hydro-upgrading catalyst was prepared using the equal volume saturation impregnation method,the catalyst was characterized by XRD,N_(2) adsorption-desorption and pyridine infrared spectroscopy,and the hydro-upgrading performance of ZnLaNiMo/ZSM-5/γ-Al_(2)O_(3)catalyst was investigated using different narrow fractions and mixed fractions of FCC gasoline as raw materials.The results show that the mass fraction of olefins in narrow fractions ranges from 6.39%to 44.78%,the content of olefins is significantly decreased with the increase of fraction boiling point,and more than 80%of olefins in FCC gasoline are concentrated in light fractions at the temperature below 115℃,dominated by C_(5)—C_(8)olefins.The specific surface area,pore diameter and pore volume of ZnLaNiMo/ZSM-5/γ-Al_(2)O_(3)hydro-upgrading catalyst are 272.9 m 2/g,7.28 nm and 0.25 cm^(3)/g,respectively.When using this catalyst for hydro-upgrading of Cut-2—Cut-5 mixed fractions,and satisifying the conditions of reaction pressure of 2.0 MPa,volumetric space velocity of 1.5 h^(-1),hydrogen oil volume ratio of 300,and reaction temperature of 340℃,the hydrogenation desulfurization rate of gasoline is 62.5%,the volume fraction of olefins in the hydro-upgrading product is decreased by 12.04%,and the research octane number is increased by 1.14,indicating that the ZnLaNiMo/ZSM-5/γ-Al_(2)O_(3)hydro-upgrading catalyst simultaneously has the triple functions of hydrogenation desulfurization,significant reduction of olefins and maintenance of octane number.
作者
钟海军
张学瑞
宋玺文
陈渤燕
王月
高卓然
胡亚琼
李望良
ZHONG Haijun;ZHANG Xuerui;SONG Xiwen;CHEN Boyan;WANG Yue;GAO Zhuoran;HU Yaqiong;LI Wangliang(CAS Key Laboratory of Green Process and Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;Petrochemical Research Institute Company Limited,CNPC,Beijing 102206,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《石油学报(石油加工)》
北大核心
2025年第1期114-124,共11页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
国家自然科学基金项目(22078347)
河南省中科科技成果转移转化中心开放性课题项目(2024101)
河南省特聘研究员(220508001)资助。
关键词
FCC汽油
加氢改质
窄馏分
烃族组成
脱硫
硫分布
烯烃
FCC gasoline
hydro-upgrading
narrow fraction
hydrocarbon group composition
desulphurization
sulfur distribution
olefin
作者简介
第一作者:钟海军,男,博士研究生,从事清洁油品生产技术研究,E-mail:113389616@qq.com;通信作者:李望良,男,研究员,博士,从事清洁能源、油-水分离研究,E-mail:wlli@ipe.ac.cn。
