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题名: Attrition of methanol to olefins catalyst with high-velocity air jets at elevated temperature
作者: Hao, Jingai1, 2;  Zhao, Yinfeng1;  Ye, Mao1;  Liu, Zhongmin1
关键词: Catalyst ;  Attrition ;  Air jet ;  High temperature
刊名: ADVANCED POWDER TECHNOLOGY
发表日期: 2015-05-01
DOI: 10.1016/j.apt.2015.03.010
卷: 26, 期:3, 页:734-741
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: The air jets method proved to be an important tool for assessing attrition propensity of fluidized bed catalyst in the laboratory, but the influence of test temperature and test time has seldom been considered. This paper focuses on the influence of test temperature and test time on the attrition mechanism of methanol to olefins (MTO) catalyst in high velocity air jets. The attrition time was prolonged to 144 h in current study. It has been found that test time should be carefully chosen in order to achieve an equilibrium attrition rate. A short test time is not sufficient to understand the attrition mechanism. Test temperature affects the attrition mechanism significantly. At room temperature the abrasion and fragmentation were found coexisting while at 500 degrees C the abrasion is dominant. The abrasion of MTO catalyst at 500 degrees C results in a severe generation of superfine powder that is hard to capture by downstream cyclones, which is in accordance with the findings in industrial MTO unit. Apparently the attrition test at room temperature cannot reflect the generation of superfine powder. Both test time and test temperature should be carefully considered when the air jets method is used in the attrition study in laboratory. (C) 2015 The Society of Powder Technology Japan. Published by Elsevier B. V. and The Society of Powder Technology Japan. All rights reserved.
关键词[WOS]: GAS-FLUIDIZED BEDS ;  PARTICLE ATTRITION ;  PRIMARY FRAGMENTATION ;  THERMAL-STABILITY ;  LIMESTONE ;  REACTOR ;  SIZE ;  DEVOLATILIZATION ;  COMBUSTION ;  RESISTANCE
语种: 英语
WOS记录号: WOS:000356240900006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146333
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab MTO, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Hao, Jingai,Zhao, Yinfeng,Ye, Mao,et al. Attrition of methanol to olefins catalyst with high-velocity air jets at elevated temperature[J]. ADVANCED POWDER TECHNOLOGY,2015,26(3):734-741.
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