石油炼制与化工 ›› 2025, Vol. 56 ›› Issue (1): 92-98.

• 加工工艺 • 上一篇    下一篇

催化剂排布状态对催化裂解反应影响的可视化研究

李泽坤1,王惠琳2,龚剑洪1,乔瑞琪1   

  1. 1. 中石化石油化工科学研究院有限公司
    2. 中国石化集团经济技术研究院有限公司
  • 收稿日期:2024-04-09 修回日期:2024-09-26 出版日期:2025-01-12 发布日期:2024-12-27
  • 通讯作者: 李泽坤 E-mail:lizekun.ripp@sinopec.com

VISUALIZATION STUDY ON THE EFFECT OF CATALYST AGGREGATION STATE ON DEEP CATALYTIC CRACKING REACTIONS

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  • Received:2024-04-09 Revised:2024-09-26 Online:2025-01-12 Published:2024-12-27

摘要: 针对催化裂解提升管反应器内出现的催化剂颗粒团聚现象,建立了一套催化裂解原位微反应可视化研究系统,采用高温热台显微镜研究了不同反应温度、进料速率和催化剂粒径下,催化剂排布状态对异丁烯催化裂解反应产物分布的影响。研究表明,提高反应温度和进料速率可以削弱催化剂团聚对转化率的影响;催化剂粒径对催化裂解反应的影响与催化剂排布状态和分子筛类型有关,催化剂团聚会影响原料与催化剂的接触以及产物的扩散,从而对反应转化率和产物选择性产生影响。

关键词: 催化裂解, 催化剂团聚, 反应转化率

Abstract: A set of in-situ microreaction visualization research systems for deep catalytic cracking has been established to address the phenomenon of catalyst particle agglomeration in the riser reactor of fluid catalytic cracking. Using a high-temperature stage microscope, the influence of catalyst arrangement on the product distribution of isobutene catalytic cracking reactions under different reaction temperatures, feed rates, and catalyst particle sizes were examined. The study indicates that increasing the reaction temperature or the feed rate of reaction can mitigate the effects of catalyst agglomeration on the conversion. The influence of the particle size of the catalyst on the deep catalytic cracking reaction is related to agglomeration of catalyst and zeolite types, affecting the contact between the feedstock and the catalyst, as well as the diffusion of products, thereby influencing the reaction outcomes.

Key words: deep catalytic cracking, catalyst aggregation, reaction conversation