Effect of competitive adsorption on catalytic cracking reaction

LIU Yindong; LI Zekun; WANG Gang; XU Chunming; GAO Jinsen

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Effect of competitive adsorption on catalytic cracking reaction

更新时间：2025-12-10

- Effect of competitive adsorption on catalytic cracking reaction
- CIESC Journal Issue 11, Pages: 2794-2799(2008)
- 作者机构：
  
  中国石油大学（北京）重质油国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 November 2008，
  
  Published：05 November 2008
- 稿件说明：
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LIU Yindong, LI Zekun, WANG Gang, et al. Effect of competitive adsorption on catalytic cracking reaction[J]. CIESC Journal, 2008, (11): 2794-2799.
DOI：

LIU Yindong, LI Zekun, WANG Gang, et al. Effect of competitive adsorption on catalytic cracking reaction[J]. CIESC Journal, 2008, (11): 2794-2799. DOI：

摘要

以大港焦化蜡油为原料，利用催化裂化工业平衡剂LBO-16在小型固定流化床实验装置上研究了竞争吸附效应对催化裂化反应的影响，并对特征组分竞争吸附行为进行分析。结果表明，竞争吸附效应对催化裂化转化率影响很大，通过提高剂油比可以基本消除竞争吸附对反应过程的影响。原料中含氮化合物及稠环烃类化合物竞争吸附效应很强，阻滞烃类裂化反应的正常进行，是催化裂化过程快速生焦的重要原因。随着竞争吸附效应的减弱，脱氢缩合反应比例下降，氢转移反应显著加强。

Abstract

The effect of competitive adsorption on catalytic cracking reaction of Dagang coking gas oil over commercial equilibrium catalysts LBO-16 was investigated in a confined fluidized bed reactor

and the competitive adsorption behavior of the characteristic ingredients was analyzed .The experimental results showed that competitive adsorption had strong effect on catalytic cracking conversion

but with the increase of mass ratio of catalyst to oil

the effect of competitive adsorption on catalytic cracking can be eliminated.Nitrogen compounds and polycyclic aromatic hydrocarbons in the feedstock had strong competitive adsorption effect that interfered catalytic cracking reaction of hydrocarbons and was an important cause of fast coke formation.With weakening of competitive adsorption behavior

the rate of dehydro-condensation reaction decreased

and hydrogen transfer reaction was obviously strengthened.

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