石油炼制与化工 ›› 2020, Vol. 51 ›› Issue (12): 1-5.

• 加工工艺 •    下一篇

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

袁起民1,毛安国1,龚剑洪1,秦煜栋2,陈阳2,洪先荣2   

  1. 1. 中国石化石油化工科学研究院
    2. 中国石化扬子石油化工有限公司
  • 收稿日期:2020-08-03 修回日期:2020-06-12 出版日期:2020-12-12 发布日期:2020-12-29
  • 通讯作者: 袁起民 E-mail:yuanqm@ripp-sinopec.com
  • 基金资助:
    国家重点研发计划资助;中国石油化工股份有限公司合同项目

INDUSTRIAL PRACTICE OF LTA TECHNOLOGY FOR CONVERTING LCO TO LIGHT AROMATICS

    

  1.  
  • Received:2020-08-03 Revised:2020-06-12 Online:2020-12-12 Published:2020-12-29
  • Supported by:
     

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/cm3、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%,C6~C8芳烃收率达到23.91%,C6~C10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。

关键词: 催化裂化, 轻循环油, 加氢, 轻质芳烃

Abstract: 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 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, C6-C8 aromatics and C6-C10 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.

Key words: catalytic cracking, light cycle oil, hydrotreating, light aromatics

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