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题名: Attrition of methanol to olefins catalyst in jet cup
作者: Hao, Jingai1, 2;  Zhao, Yinfeng1;  Ye, Mao1;  Liu, Zhongmin1
关键词: Attrition ;  MTO ;  Catalyst ;  Jet cup ;  Gwyn formulation
刊名: POWDER TECHNOLOGY
发表日期: 2017-07-01
DOI: 10.1016/j.powtec.2016.12.091
卷: 316, 页:79-86
收录类别: SCI ;  ISTP
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: Attrition of catalyst in a fluidized bed reactor is an inevitable issue especially in a commercial unit. Methanol to olefins (MTO) is becoming one of the main stream technologies for light olefins production. The attrition of MTO catalyst, however, received little attention. This study is focused on the attrition behavior of MTO catalyst in jet cup at high temperature. The influence of test time, inlet gas velocity, and temperature on MTO catalyst attrition was studied. It is found that the Gwyn formulation can well represent the relation between attrition index and test time. Our results show that jet cup can retrieve results quantitatively comparable to high velocity gas jets method while significantly shortening test time. It is also found that the inlet gas velocity has considerable influence on the MTO catalyst attrition, and the relation between inlet gas velocities and attrition index can be described by a power index of 3.7. Similar to high velocity gas jets experiments the attrition index manifests a maximum with the increase of temperature. But the temperature corresponding to the maximum attrition index shifts from 300 degrees C in high velocity jets tests to 100 degrees C in jet cup experiments. An analysis based on SEM pictures indicates that the transition of attrition mechanism is responsible for this shift. An empirical correlation has been presented for MTO catalyst attrition in jet cup, which shows good agreement with experimental data for inlet gas velocity from 88 to 158 m/s, and temperature from 100 to 500 degrees C. (C) 2017 Elsevier B.V. All rights reserved.
关键词[WOS]: FISCHER-TROPSCH CATALYSTS ;  FLUIDIZED-BED ;  SIZE DISTRIBUTION ;  IMPACT ATTRITION ;  RESISTANCE ;  PARTICLES ;  TEMPERATURE ;  BEHAVIOR
语种: 英语
WOS记录号: WOS:000403510600009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152187
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, Natl Engn Lab MTO, Dalian Inst Chem Phys, 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 in jet cup[J]. POWDER TECHNOLOGY,2017,316:79-86.
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