LCO选择性加氢-催化裂化组合生产轻质芳烃(LTA)技术工业实践  

INDUSTRIAL PRACTICE OF LTA TECHNOLOGY FOR CONVERTING LCO TO LIGHT AROMATICS

作　　者：袁起民[1] 毛安国[1] 龚剑洪[1] 秦煜栋 陈阳 洪先荣[2] Yuan Qimin;Mao Anguo;Gong Jianhong;Qin Yudong;Chen Yang;Hong Xianrong(SINOPEC Research Institute of Petroleum Processing,Beijing 100083;SINOPEC Yangzi Petrochemical Company,Ltd.)

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]中国石化扬子石油化工有限公司

出　　处：《石油炼制与化工》2020年第12期1-5,共5页Petroleum Processing and Petrochemicals

基　　金：国家重点研发计划资助项目(2017YFB0306503);中国石油化工股份有限公司合同项目(ZD117002)。

摘　　要：在中国石化扬子石油化工有限公司705 kt/a柴油加氢装置和700 kt/a催化裂化装置进行了LCO选择性加氢-催化裂化组合生产轻质芳烃(LTA)技术的工业试验。结果表明:采用LTA技术,当原料加氢LCO密度(20℃)为0.9210 g/cm 3、氢质量分数为10.92%、多环芳烃质量分数为18.7%时,加氢LCO催化裂化单程转化率为70.90%;全循环操作时,汽油收率达到64.53%,C 6~C 8芳烃收率达到23.91%,C 6~C 10烷基苯型单环芳烃收率达到35.53%。此外,采用LTA技术时,加氢LCO作催化裂化进料能够实现反应-再生自身热平衡操作,分馏和吸收稳定系统操作稳定。The industrial trial of LTA technology for converting LCO to light aromatics was carried out in a LCO hydrotreating unit with capacity of 705 kt/a and a catalytic cracking unit with capacity of 700 kt/a in SINOPEC Yangzi Petrochemical Company,Ltd.The results showed that using the hydrotreated LCO with density(20℃)of 921.0 kg/m3,hydrogen content of 10.92%and polycyclic aromatics content of 18.7%as FCC feed,the once-through conversion was 70.90%,the yields of gasoline,C 6-C 8 aromatics and C 6-C 10 monocyclic aromatics were up to 64.53%,23.91%and 35.53%,respectively in full recycle operation.In addition,the industrial results of LTA technology also proved that the hydrotreated LCO feed can meet the heat-balance operation of reaction and regeneration system,and meanwhile the operation of the fractionator and absorbing-stabilizing system can be stable.

关 键 词：催化裂化 轻循环油 加氢 轻质芳烃 

分 类 号：TQ241[化学工程—有机化工]