几种催化裂化催化剂的磨损机制与动力学

中国腐蚀与防护学报

2010, Vol. 30

Issue (2): 135-140

会议论文

本期目录 | 过刊浏览

几种催化裂化催化剂的磨损机制与动力学

吴俊升¹;李晓刚¹;公铭扬¹;张志华^1;2;郭金涛²

1. 北京科技大学新材料技术研究院北京 100083
2. 中国石油大庆化工研究中心大庆 163714

KINETICS AND MECHANISM OF ATTRITION OF SEVERAL FCC CATALYSTS

WU Junsheng¹; LI Xiaogang¹; GONG Mingyang¹;ZHANG Zhihua^1;2; GUO Jintao²

1. Institute of Advanced Materials;University of Science and Technology Beijing; Beijing 100083
2. PetroChina Daqing Research Center of Chemical Engineering; Daqing 163714

全文: PDF(1299 KB)

摘要:

催化剂磨损失效是流化催化裂化（FCC）过程中所面临的一个重要问题，磨损会造成催化剂跑剂和产品的污染。采用喷杯式(jet-cup) 流化磨损测试方法研究了炼油工业用几种不同抗磨性能FCC催化剂和添加剂的磨损规律，并探索了体系流体力学特性和颗粒自身性质对其磨损行为的影响。实验结果表明，不同粒径的催化剂颗粒具有不同的磨损行为；所有测试催化剂的磨损均由表面剥层磨损和体断裂磨损组成的混合磨损机制所支配；磨损的发展过程符合Gwyn磨损动力学方程，不同颗粒磨损规律的差别可由Gwyn方程的各参数来描述。

关键词 ：催化裂化, 催化剂, 磨损, 喷杯磨损测试

Abstract：

Catalyst attrition resistance is extremely important in the operation of fluid catalytic cracking (FCC) units because of potential problems with loss of catalyst and contamination of the subsequent products. Attrition behavior of several FCC catalysts and catalyst additives in oil refineries was investigated through lab-scale jet-cup test. The influences of ambient hydrodynamic parameters and material characteristic properties on particle attrition mechanism were mainly explored and clarified. The experimental results indicate that the particle size distribution has great influence on the attrition behavior of the catalysts tested, and a mixed attrition mechanism consisting of abrasion and fragmentation is identified for all the catalysts in terms of attrition loss rate evaluation, after-attrition morphology characterization and particle size distribution analysis. It is shown that the attrition of particles was found to evolute following Gwyn’s kinetic model and the difference of attrition mechanism of various particles can be categorized with parameters of the Gwyn equation.

Key words： fluid catalytic cracking (FCC) catalyst attrition jet-cup attrition test

收稿日期: 2009-10-30

ZTFLH:

TH117.3

基金资助:

中国石油天然气股份有限公司超前共性项目（W050508-03-01）和北京市教育委员会共建项目(SYS100080419)资助

通讯作者: 吴俊升 E-mail: wujs76@163.com

Corresponding author: WU Junsheng E-mail: wujs76@163.com

作者简介: 吴俊升，男，1976年生，博士，副教授，研究方向为材料腐蚀与防护、新型功能材料制备等

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引用本文:

吴俊升;李晓刚;公铭扬;张志华;郭金涛. 几种催化裂化催化剂的磨损机制与动力学[J]. 中国腐蚀与防护学报, 2010, 30(2): 135-140.
WU Jun-Sheng, LI Xiao-Gang, GONG Ming-Yang, ZHANG Zhi-Hua, GUO Jin-Shou. KINETICS AND MECHANISM OF ATTRITION OF SEVERAL FCC CATALYSTS. J Chin Soc Corr Pro, 2010, 30(2): 135-140.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2010/V30/I2/135

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