Journal ArticleDOI
Investigation of Chemical-Looping Combustion of Solid Fuels
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In this article, the chemical-looping combustion process of solid fuels has been investigated using thermogravimetric analysis (TGA), and experimental results showed that CuO showed high reactivity during reduction process with coal.Abstract:
The chemical-looping combustion process of solid fuels has been investigated using thermogravimetric analysis (TGA). Experimental results showed that CuO showed high reactivity during reduction process with coal. The coal conversion rate increased with the increase of reaction temperature, and the optimum reaction temperature was about 800 °C. When CuO was supported on TiO2, the temperature to initiate the reaction decreased and the coal conversion rate also increased. Candlenut wood ash, which contained high amount of alkali metal, displayed catalytic activity in mixtures with coal during the CLC process. A key issue is to find the ways for increasing the gasification rates during the CLC process in an industrial process.read more
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Journal ArticleDOI
Progress in chemical-looping combustion and reforming technologies
TL;DR: A comprehensive review of the Chemical-Looping Combustion (CLC) and ChemicalLooping Reforming (CLR) processes reporting the main advances in these technologies up to 2010 is presented in this article.
Journal ArticleDOI
Behavior of ilmenite as oxygen carrier in chemical-looping combustion
TL;DR: In this article, the authors analyzed the behavior of ilmenite as an oxygen-carrier in chemical-looping combustion (CLC) and found that the reaction rate is the sum of the individual reaction rates of H 2 and CO.
Journal ArticleDOI
The use of ilmenite as oxygen-carrier in a 500Wth Chemical-Looping Coal Combustion unit
TL;DR: In this paper, the effect of temperature and coal particle size on coal conversion and combustion efficiency was assessed in a 500-Wth facility with bituminous coal with ilmenite as an oxygen-carrier.
Journal ArticleDOI
Chemical looping coal gasification with calcium ferrite and barium ferrite via solid–solid reactions
Ranjani Siriwardane,Jarrett Riley,Jarrett Riley,Hanjing Tian,Hanjing Tian,George A. Richards +5 more
TL;DR: In this article, the authors investigated coal gasification to produce synthesis gas by chemical looping with two oxygen carriers, barium ferrite (BaFe2O4) and calcium ferrite, and found that the combined steam-oxygen carrier produced the highest quantity of synthesis gas.
Journal ArticleDOI
Effect of operating conditions in Chemical-Looping Combustion of coal in a 500 Wth unit
TL;DR: In this article, the effect of operating conditions such as the solids circulation rate and oxygen-carrier residence time, the coal flow feed and the steam flow as gasification agent were investigated on the combustion efficiency and extent of gasification.
References
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Journal ArticleDOI
Progress in chemical-looping combustion and reforming technologies
TL;DR: A comprehensive review of the Chemical-Looping Combustion (CLC) and ChemicalLooping Reforming (CLR) processes reporting the main advances in these technologies up to 2010 is presented in this article.
Journal ArticleDOI
Solid fuels in chemical-looping combustion
TL;DR: The feasibility of using a number of different solid fuels in chemical-looping combustion (CLC) has been investigated in this article, where a laboratory fluidized bed reactor system for solid fuel, simulating a CLC system by exposing the sample to alternating reducing and oxidizing conditions, was used.
Journal ArticleDOI
The use of petroleum coke as fuel in chemical-looping combustion
TL;DR: In this article, the feasibility of using solid fuel (petroleum coke) in chemical-looping combustion (CLC) has been demonstrated, where the reaction between the oxygen carrier and solid fuel occurs via the gasification intermediates.