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Volume 2012, Issue 1
  • EISSN: 2223-506X

Abstract

Abstract

The operational feasibility temperature range of chemical looping combustion (CLC) and chemical looping reforming (CLR) of the fuels methane, propane, iso-octane and ethanol was explored using the common sulphates Na SO , CaSO  and MgSO  as oxygen carriers. The chemical reaction equations for each oxygen carrier and fuel were formulated and fed into the Chemical Equations module of HSC Chemistry 5.1 software to obtain the Gibbs free energy change (G) of the chemical reaction within the temperature range (200–1200∘C). The CLC and CLR process operational feasibility temperature range for the fuel-oxygen carrier combination was mapped excluding the undesirable formation of SO  in CLC and H S and S in CLR. Na SO  and CaSO  were found to be suitable for all CLC and CLR systems. MgSO  was not found to be a suitable candidate for CLC or CLR processes irrespective of the fuel considered. Methane was found to be better than the other fuels studied as the operational temperature range of CLC and CLR processes were wide for all the sulphates. This short cut methodology presented in this paper can be used to predict the operational feasibility of CLC and CLR processes of different fuels and oxygen carriers.

© 2012 Kale, licensee Bloomsbury Qatar Foundation Journals.
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2012-01-27
2024-04-18
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Feasibility study of sulfates as oxygen carriers for chemical looping processes
QScience Connect 2012, 1 (2012); https://doi.org/10.5339/connect.2012.1
/content/journals/10.5339/connect.2012.1
/content/journals/10.5339/connect.2012.1
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  • Article Type: Research Article
Keyword(s): Chemical looping combustion, chemical looping reforming, oxygen carriers, sulfates, syngas generation and thermodynamic study

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