石油炼制与化工 ›› 2023, Vol. 54 ›› Issue (10): 58-64.

• 加工工艺 • 上一篇    下一篇

半再生重整装置改造为固体超强酸C5/C6异构化装置工业实践

陈家岭1,刘洪全2,兰勇1,张会兵1,于中伟2,张欣1,苏燕飞1,梁尚坤1   

  1. 1. 中国石油青海油田格尔木炼油厂
    2. 中石化石油化工科学研究院有限公司
  • 收稿日期:2023-04-28 修回日期:2023-07-19 出版日期:2023-10-12 发布日期:2023-09-24
  • 通讯作者: 陈家岭 E-mail:cjlqh@petrochina.com.cn

INDUSTRIAL PRACTICE OF REVAMPING SEMI-REGENERATIVE REFROMING UNIT TO SOLID SUPERACID C5/C6 ISOMERIZATION UNIT

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  • Received:2023-04-28 Revised:2023-07-19 Online:2023-10-12 Published:2023-09-24

摘要: 为生产符合国ⅥB汽油标准的高辛烷值汽油,某炼油厂采用中石化石油化工科学研究院有限公司开发的固体超强酸C5/C6异构化催化剂及配套工艺技术,将闲置的190 kt/a半再生催化重整装置技改为C5/C6异构化装置,加工富含苯和C7的重整拔头油。工业实践结果表明:将半再生催化重整装置改造为固体超强酸C5/C6异构化装置不但在技术上可行,且装置利旧率高、投资低;在水含量合格的条件下,即使加工苯质量分数高达4%~8%、C7质量分数高达10%~18%的C5/C6异构化原料,RISO-C仍具有优异的异构化活性和稳定性,同时具有较好的苯加氢活性,使异构化汽油研究法辛烷值增加4~8,达到 82以上,且苯质量分数低于0.8%;将固体超强酸C5/C6异构化装置与C7+重整装置配合,可降低重整汽油苯含量,生产符合国ⅥB汽油标准的高辛烷值汽油,具有显著的经济效益和社会效益。

关键词: C5/C6烷烃, 异构化, RISO-C, 固体超强酸催化剂, 辛烷值

Abstract: In order to produce high octane gasoline in accordance with the national VIB gasoline standard, the solid superacid C5/C6 isomerization catalyst developed by SINOPEC Research Institute of Petroleum Processing was used in a refinery and its supporting process technology was also adopted. The idle 190 kt/a semi-regeneration catalytic reforming unit was converted into a C5/C6 isomerization unit for the processing of reformer topping oil rich in benzene and heptane. The industrial practice results showed that it was feasible to transform the semi-regeneration reforming unit into the isomerization unit of solid superacid C5/C6. Under the condition of qualified water content, catalyst RISO-C had excellent isomerization activity and stability even when the benzene and C7 mass fraction of C5/C6 isomerization feedstock were 4%-8% and 10%-18%, respectively. At the same time, it had good benzene hydrogenation activity, which increased the research octane number (RON) of isomerized products by 4-8 units, reaching 82 or above, and the benzene content was below 0.8%. Combining the C5/C6 isomerization unit of solid superacid with C7+ reforming unit, the benzene content of reformer gasoline could be reduced, and the high octane number gasoline conforming to the national VIB gasoline standard could be produced, which had remarkable economic and social benefits.

Key words: C5/C6 alkanes, isomerization, RISO-C, solid superacid catalyst, octane number