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Influence of Temperature on Fluidized‐Bed Catalyst Attrition Behavior
Author(s) -
Hao Jingai,
Zhao Yinfeng,
Ye Mao,
Liu Zhongmin
Publication year - 2016
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201500660
Subject(s) - fluidized bed , attrition , abrasion (mechanical) , materials science , cracking , fluid catalytic cracking , catalysis , particle size , fluidized bed combustion , chemical engineering , metallurgy , composite material , chemistry , organic chemistry , medicine , dentistry , engineering
Particle attrition is a prevalent problem in fluidized beds due to continuous moving of catalyst particles. It is always operated at high temperature either for lab‐ or industrial‐scale fluidized beds. The influence of temperature on the attrition behavior of commercial methanol‐to‐olefins (MTO) and fluid catalytic cracking (FCC) catalysts is analyzed in a three‐orifice lab‐scale fluidized bed device from room temperature to 600 °C. The two catalysts are found to be alike in attrition mode. Both change from a combination of abrasion and fragmentation to main abrasion with increasing temperature, but differ greatly in the variation of attrition index with temperature which may be attributed to the difference of material and particle properties. An empirical correlation of attrition index to attrition temperature for all test samples is proposed.