石油炼制与化工 ›› 2016, Vol. 47 ›› Issue (12): 1-6.

• 加工工艺 •    下一篇

直馏柴油催化裂化加工技术探索

魏晓丽,龚剑洪,毛安国,宋宝梅   

  1. 中国石化石油化工科学研究院
  • 收稿日期:2016-05-23 修回日期:2016-07-15 出版日期:2016-12-12 发布日期:2016-11-29
  • 通讯作者: 魏晓丽 E-mail:weixl@ripp-sinopec.com
  • 基金资助:
     

EXPLORATION ON CATALYTIC CRACKING OF STRAIGHT-RUN MIDDLE DISTILLATE

    

  1.  
  • Received:2016-05-23 Revised:2016-07-15 Online:2016-12-12 Published:2016-11-29
  • Supported by:
     

摘要: 采用小型固定流化床实验装置,探索研究了直馏柴油催化裂化加工技术路线的可行性。结果表明:催化裂化是将直馏柴油转化为高附加值产物的切实可行的工艺技术;采用催化裂化技术路线时,直馏柴油直接催化裂化反应具有较高的汽油和丙烯收率,分别可达48%和8%左右;采用催化裂解技术路线时,直馏柴油直接催化裂解反应具有较高的低碳烯烃和BTX(苯、甲苯和二甲苯)收率,在反应温度为620℃时乙烯、丙烯和BTX总收率可达39%以上,并可副产22%以上的高辛烷值汽油,其 RON在99以上;重油原料掺炼直馏柴油时,直馏柴油掺入比例较高时催化裂化反应性能较好,但会导致汽油产物中芳烃含量增加。

关键词: 催化裂化, 催化裂解, 直馏柴油, 汽油, 低碳烯烃

Abstract: Exploration on catalytic conversion of straight-run middle distillate was conducted in a fixed fluidized bed reactor. The results show that catalytic cracking process is a practical technology for the conversion of straight-run middle distillate into high value added products. The gasoline yield of 48% and the propylene yield of 8% are obtained in this process. While using direct catalytic pyrolysis at 620 ℃ the total yield of light olefins and BTX is above 39% and a yield of byproduct gasoline with RON 99 is approximately 22%. The higher blending ratio of straight-run with heavy oil feed for FCC improves the gasoline selectivity, but increases the aromatics content in gasoline.

Key words: catalytic cracking, catalytic cracking, straight-run middle distillate, gasoline, light olefins

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