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Title: Natural Ores as Oxygen Carriers in Chemical Looping Combustion

Abstract

Chemical looping combustion (CLC) is a combustion technology that utilizes oxygen from oxygen carriers (OC), such as metal oxides, instead of air to combust fuels. The use of natural minerals as oxygen carriers has advantages, such as lower cost and availability. Eight materials, based on copper or iron oxides, were selected for screening tests of CLC processes using coal and methane as fuels. Thermogravimetric experiments and bench-scale fixed-bed reactor tests were conducted to investigate the oxygen transfer capacity, reaction kinetics, and stability during cyclic reduction/oxidation reaction. Most natural minerals showed lower combustion capacity than pure CuO/Fe{sub 2}O{sub 3} due to low-concentrations of active oxide species in minerals. In coal CLC, chryscolla (Cu-based), magnetite, and limonite (Fe-based) demonstrated better reaction performances than other materials. The addition of steam improved the coal CLC performance when using natural ores because of the steam gasification of coal and the subsequent reaction of gaseous fuels with active oxide species in the natural ores. In methane CLC, chryscolla, hematite, and limonite demonstrated excellent reactivity and stability in 50-cycle thermogravimetric analysis tests. Fe{sub 2}O{sub 3}-based ores possess greater oxygen utilization but require an activation period before achieving full performance in methane CLC. Particle agglomeration issues associated withmore » the application of natural ores in CLC processes were also studied by scanning electron microscopy (SEM).« less

Authors:
; ; ;
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research; National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1128298
Report Number(s):
A-CONTR-PUB-007
DOE Contract Number:  
DE-FE0004000
Resource Type:
Journal Article
Journal Name:
ENERGY & FUELS
Additional Journal Information:
Journal Volume: 27; Journal Issue: 8
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES

Citation Formats

Tian, Hanjing, Siriwardane, Ranjani, Simonyi, Thomas, and Poston, James. Natural Ores as Oxygen Carriers in Chemical Looping Combustion. United States: N. p., 2013. Web. doi:10.1021/ef301486n.
Tian, Hanjing, Siriwardane, Ranjani, Simonyi, Thomas, & Poston, James. Natural Ores as Oxygen Carriers in Chemical Looping Combustion. United States. https://doi.org/10.1021/ef301486n
Tian, Hanjing, Siriwardane, Ranjani, Simonyi, Thomas, and Poston, James. 2013. "Natural Ores as Oxygen Carriers in Chemical Looping Combustion". United States. https://doi.org/10.1021/ef301486n. https://www.osti.gov/servlets/purl/1128298.
@article{osti_1128298,
title = {Natural Ores as Oxygen Carriers in Chemical Looping Combustion},
author = {Tian, Hanjing and Siriwardane, Ranjani and Simonyi, Thomas and Poston, James},
abstractNote = {Chemical looping combustion (CLC) is a combustion technology that utilizes oxygen from oxygen carriers (OC), such as metal oxides, instead of air to combust fuels. The use of natural minerals as oxygen carriers has advantages, such as lower cost and availability. Eight materials, based on copper or iron oxides, were selected for screening tests of CLC processes using coal and methane as fuels. Thermogravimetric experiments and bench-scale fixed-bed reactor tests were conducted to investigate the oxygen transfer capacity, reaction kinetics, and stability during cyclic reduction/oxidation reaction. Most natural minerals showed lower combustion capacity than pure CuO/Fe{sub 2}O{sub 3} due to low-concentrations of active oxide species in minerals. In coal CLC, chryscolla (Cu-based), magnetite, and limonite (Fe-based) demonstrated better reaction performances than other materials. The addition of steam improved the coal CLC performance when using natural ores because of the steam gasification of coal and the subsequent reaction of gaseous fuels with active oxide species in the natural ores. In methane CLC, chryscolla, hematite, and limonite demonstrated excellent reactivity and stability in 50-cycle thermogravimetric analysis tests. Fe{sub 2}O{sub 3}-based ores possess greater oxygen utilization but require an activation period before achieving full performance in methane CLC. Particle agglomeration issues associated with the application of natural ores in CLC processes were also studied by scanning electron microscopy (SEM).},
doi = {10.1021/ef301486n},
url = {https://www.osti.gov/biblio/1128298}, journal = {ENERGY & FUELS},
number = 8,
volume = 27,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 2013},
month = {Thu Aug 01 00:00:00 EDT 2013}
}