碳四烃芳构化生产混合芳烃技术开发及工业应用

DEVELOPMENT AND INDUSTRIAL APPLICATION OF C_4 HYDROCARBON AROMATIZATION FOR PRODUCTION OF MIXED AROMATICS

中国石油兰州化工研究中心研究开发了碳四烃芳构化生产混合芳烃技术,并在河南濮阳恒润石化公司200 kt/a碳四烃芳构化生产混合芳烃装置工业应用,结果表明:以烯烃质量分数为41.91%的碳四烃为原料,在反应温度为400℃、反应压力为2.0 MPa、进料体积空速为1.0 h^(-1)的临氢反应条件下,碳四烯烃转化率为99.02%,干气产率为1.94%,液化气收率为53.90%,汽油组分收率为40.11%,汽油RON为94～96,柴油组分收率为4.05%;液相产物中芳烃质量分数为56.48%,其中苯质量分数为2.01%,甲苯质量分数为11.58%,二甲苯质量分数为19.00%。

The technology of C4 hydrocarbon aromatization to produce mixed aromatics developed by PetroChina Lanzhou Chemical Research Center was put into operation in the 200 kt a C4 aromatization unit in Hengrun Petrochemical Company.The results of industrial application showed that using C4 with olefin mass fraction of 41.91% as raw material,under the hydrogenation conditions of 400 ℃,2.0 MPa and LHSV 1.0 h^-1 ,the conversion rate of C4 olefins was 99.02% with the dry gas yield was 1.94%.The yields of liquefied gas and gasoline component were 53.90% and 40.11%,respectively.The gasoline octane number was 94-96.The diesel yeild was 4.05%.The mass fraction of aromatic hydrocarbons in liquid phase products was 56.48%,among which the mass fraction of benzene was 2.01%,toluene 11.58% and xylene 19.00%.