负压差斜管内催化剂颗粒流动特性的实验研究

石油炼制与化工 ›› 2024, Vol. 55 ›› Issue (8): 107-112.

负压差斜管内催化剂颗粒流动特性的实验研究

贺娇^1,2,彭威²,刘梦溪¹,唐海光³,魏耀东¹,史柯柯¹

1. 中国石油大学（北京）重质油全国重点实验室
2. 中国石油大学（北京）克拉玛依校区工学院
3. 中国石油青海油田格尔木炼油厂

收稿日期:2023-12-08 修回日期:2024-04-29 出版日期:2024-08-12 发布日期:2024-07-29
通讯作者: 彭威 E-mail:pengwei@cupk.edu.cn
基金资助:
国家重点研发计划项目;中国石油大学(北京)科学基金项目;中国石油大学(北京)克拉玛依科技人才创新基金项目;中国石油大学(北京)克拉玛依青年人才基金项目

EXPERIMENTAL STUDY ON FLOW CHARACTERISTICS OF CATALYST PARTICLES IN INCLINED PIPE WITH NEGATIVE PRESSURE GRADIENT

Received:2023-12-08 Revised:2024-04-29 Online:2024-08-12 Published:2024-07-29

摘要/Abstract

摘要： 在规格为Φ150 mm×3 600 mm的负压差斜管-阀门实验装置上，通过测量和分析不同催化剂颗粒质量流率（G_s）时斜管内轴向动态压力的特征参数，进行催化裂化装置斜管内催化剂颗粒的流动特性研究。结果表明：斜管蓄压能力随Gs的增大而增大，管内依次出现稀相分层流、密相分层流和填充流；斜管内的压力分布、主频、幅值、标准偏差与流态相对应，可用于流态的量化识别；当G_s＝65.96 kg/(m².s)时，斜管内存在多流态，分别为过渡填充流、填充流、密相流；在斜管中部通入松动风，可以有效改善颗粒输送能力和斜管蓄压能力。

关键词: 催化裂化, 斜管, 流态, 动态压力, 松动风

Abstract: On the Φ150mm×3600mm negative pressure gradient tube-valve experimental device,the characteristicparameters of the axial dynamic pressure in the inclined tube with different catalyst particle mass flow rates (G_s) were measured and analyzed,and the flow characteristics of catalyst particles in inclined tube of FCC unit were studied. The results showed that the pressure storage capacity of the inclined pipe increased with the increase of particle mass flow rate Gs and the lean phase stratified flow and dense phase stratified flow appeared successively in the pipe.The pressure distribution, dominant frequency, amplitude and pressure variance in the inclined tube correspond to the flow pattern, which could be used for quantitative identification of the flow pattern. When G_s＝65.96 kg/(m².s), there were multiple flow patterns in the inclined pipe, including transition packed-bed flow, packed-bed flow and dense phase flow. The aeration gas was injected into the middle of the inclined pipe to effectively improve the particle conveying capacity and the pressure storage capacity of the inclined pipe.

Key words: catalytic cracking, inclined pipe, flow pattern, dynamic pressure, aeration gas

贺娇彭威刘梦溪唐海光魏耀东史柯柯. 负压差斜管内催化剂颗粒流动特性的实验研究[J]. 石油炼制与化工, 2024, 55(8): 107-112.

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