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Title: Attrition of hematite particles for chemical looping combustion in a conical jet cup

Abstract

The attrition of hematite particles for use in the chemical looping combustion process was investigated using a cold flow jet cup test. Jet cup attrition experiments are commonly used for bulk attrition testing of fluidized bed catalyst. The results indicate that the particle attrition in the jet cup cold flow experiments arises from surface abrasion due to particle-particle and particle-wall interactions. Experiments indicate that the measured cumulative mass loss increases with attrition time. However, the attrition rate decreases sharply at the early stage of attrition, and gradually, the rate decline slows and approaches a constant value with increasing attrition time. Furthermore, the influence of inlet gas velocity and solid inventory is discussed. As inlet gas velocities increase, the measured cumulative mass loss also increases. However, as the solid inventory increases, the cumulative mass loss decreases. The results also show that the jet cup experiments quantitatively compare with low magnitude tangential forces which is an indication of attrition through abrasion as the primary mechanism. It is determined through particle size distributions before and after which show a small shift of the main peaks with no peak broadening while producing a small number of fines. By using the mass of abraded finesmore » and the widely-used Archard model for abrasive attrition, the specific wear rate coefficient can be predicted as a function of time. The wear coefficient calculation further identifies that the abrasion mechanism as the primary mechanism of attrition.« less

Authors:
 [1];  [2];  [3];  [3]
  1. National Energy Technology Lab. (NETL), Morgantown, WV (United States); REM Engineering Services, PLLC, Morgantown, WV (United States)
  2. National Energy Technology Lab. (NETL), Morgantown, WV (United States); Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States)
  3. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1509710
Report Number(s):
NETL-PUB-21803
Journal ID: ISSN 0032-5910
Grant/Contract Number:  
FE0004000; DOE EERE GTO R&D
Resource Type:
Accepted Manuscript
Journal Name:
Powder Technology
Additional Journal Information:
Journal Volume: 340; Journal Issue: C; Journal ID: ISSN 0032-5910
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
Chemical looping combustion; Attrition; Jet cup; Hematite

Citation Formats

Monazam, Esmail R., Galinsky, Nathan L., Breault, Ronald W., and Bayham, Samuel C. Attrition of hematite particles for chemical looping combustion in a conical jet cup. United States: N. p., 2018. Web. doi:10.1016/j.powtec.2018.09.027.
Monazam, Esmail R., Galinsky, Nathan L., Breault, Ronald W., & Bayham, Samuel C. Attrition of hematite particles for chemical looping combustion in a conical jet cup. United States. doi:10.1016/j.powtec.2018.09.027.
Monazam, Esmail R., Galinsky, Nathan L., Breault, Ronald W., and Bayham, Samuel C. Fri . "Attrition of hematite particles for chemical looping combustion in a conical jet cup". United States. doi:10.1016/j.powtec.2018.09.027. https://www.osti.gov/servlets/purl/1509710.
@article{osti_1509710,
title = {Attrition of hematite particles for chemical looping combustion in a conical jet cup},
author = {Monazam, Esmail R. and Galinsky, Nathan L. and Breault, Ronald W. and Bayham, Samuel C.},
abstractNote = {The attrition of hematite particles for use in the chemical looping combustion process was investigated using a cold flow jet cup test. Jet cup attrition experiments are commonly used for bulk attrition testing of fluidized bed catalyst. The results indicate that the particle attrition in the jet cup cold flow experiments arises from surface abrasion due to particle-particle and particle-wall interactions. Experiments indicate that the measured cumulative mass loss increases with attrition time. However, the attrition rate decreases sharply at the early stage of attrition, and gradually, the rate decline slows and approaches a constant value with increasing attrition time. Furthermore, the influence of inlet gas velocity and solid inventory is discussed. As inlet gas velocities increase, the measured cumulative mass loss also increases. However, as the solid inventory increases, the cumulative mass loss decreases. The results also show that the jet cup experiments quantitatively compare with low magnitude tangential forces which is an indication of attrition through abrasion as the primary mechanism. It is determined through particle size distributions before and after which show a small shift of the main peaks with no peak broadening while producing a small number of fines. By using the mass of abraded fines and the widely-used Archard model for abrasive attrition, the specific wear rate coefficient can be predicted as a function of time. The wear coefficient calculation further identifies that the abrasion mechanism as the primary mechanism of attrition.},
doi = {10.1016/j.powtec.2018.09.027},
journal = {Powder Technology},
number = C,
volume = 340,
place = {United States},
year = {2018},
month = {9}
}

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