Analysis of the influence of catalyst particle size distribution on product distribution in catalytic cracking unit

Petroleum Refinery Engineering ›› 2025, Vol. 55 ›› Issue (1): 49-51.

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Analysis of the influence of catalyst particle size distribution on product distribution in catalytic cracking unit

Liu Zhaoyong, Wang Yanfei, Liu Tao, Gao Xionghou

PetroChina Lanzhou Petrochemical Research Center, Lanzhou, Gansu 730060

Received:2024-09-20 Online:2025-01-16 Published:2025-02-08

催化裂化装置催化剂粒径分布对产品分布影响分析

柳召永，王艳飞，刘涛，高雄厚

中国石油石油化工研究院兰州化工研究中心，甘肃省兰州市 730060

作者简介:柳召永，高级工程师，从事催化裂化催化剂与工艺的研发工作。E-mail: lzy0539@126.com
基金资助:
国家科技支撑计划（2012BAE05B02）

Abstract

Abstract:

The catalytic cracking reaction performance of catalysts with different particle size distributions was evaluated, and the influence of catalyst particle size distribution on product distribution was investigated. The results show that for catalysts with the same particle size distribution, as the catalyst to oil ratio increases, the increase in dry gas yield is not significant, the trend of the conversion rate first increases significantly and then tends to flatten out, the heavy oil yield gradually decreases, the coke yield gradually increases, and the trend of gasoline yield changes varies. For the catalyst with a median particle size of 43.71 μm, when the catalyst to oil ratio reaches 6, the total liquid yield is the highest and the product distribution is the best. The particle size distribution of the catalyst has a significant impact on the product distribution and fluidization performance of the catalyst. Catalysts with a particle size of 40 μm have poor fluidization performance and need to be taken seriously.

Key words: catalytic cracking unit, catalyst, particle size distribution, product distribution, catalyst to oil ratio, light oil yield, total liquid yield, conversion rate

摘要：

对不同粒径分布的催化剂进行催化裂化反应性能评价，考察了催化剂粒径分布对产品分布的影响。结果表明：对于同一粒径分布的催化剂而言，随着剂油比的增加，干气收率的增加并不显著，转化率先明显增加后增加趋势趋于平缓，重油收率逐渐减少，焦炭收率逐渐增加，汽油收率的变化趋势各有不同；对于中位粒径为43.71 μm的催化剂而言，剂油比达到6时，总液体收率最高，产品分布最优。催化剂的粒径分布对产品分布和催化剂流化性能有明显影响。粒径40 μm的催化剂的流化性能较差，需引起重视。

关键词: 催化裂化装置, 催化剂, 粒径分布, 产品分布, 剂油比, 轻油收率, 总液体收率, 转化率

Liu Zhaoyong, Wang Yanfei, Liu Tao, Gao Xionghou. Analysis of the influence of catalyst particle size distribution on product distribution in catalytic cracking unit[J]. Petroleum Refinery Engineering, 2025, 55(1): 49-51.

柳召永, 王艳飞, 刘涛, 高雄厚. 催化裂化装置催化剂粒径分布对产品分布影响分析[J]. 炼油技术与工程, 2025, 55(1): 49-51.

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Analysis of the influence of catalyst particle size distribution on product distribution in catalytic cracking unit

催化裂化装置催化剂粒径分布对产品分布影响分析

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