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  Oil Shale

ISSN 1736-7492 (electronic)  ISSN 0208-189X (print)
Published since 1984

Oil Shale

ISSN 1736-7492 (electronic)  ISSN 0208-189X (print)
Published since 1984

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Reactivities of American, Chinese and Estonian oil shale semi-cokes and Argonne premium coal chars under oxy-fuel combustion conditions; pp. 353–369

(Full article in PDF format) https://doi.org/10.3176/oil.2019.3.01


Authors

Chris Culin, Kevin Tente, Alar Konist, Birgit Maaten, Lauri Loo, Eric Suuberg, Indrek Külaots

Abstract

Oil shales of various rank and origin from China, Estonia and the United States are investigated and their oxidation reactivities under simulated oxy-fuel combustion conditions, in air, and in 100% CO2 atmospheres explored. Independent of rank and origin, as the oil shale pyrolysis temperature increases, the oil shale semi-coke oxidation reactivity decreases. The oxidation reactivities in air and in simulated oxy-fuel oxidation atmospheres for all of the oil shale semi-cokes tested are more or less the same. Oil shale semi-coke oxidation reaction activation energies in an air atmosphere are similar to the activation energies obtained under the simulated oxy-fuel conditions. These findings are useful for optimizing retrofit of current oil shale-fired systems to oxy-fuel combustion conditions, particularly if they are to be fired with oil shale semi-coke from retorting processes.

Keywords

oil shale semi-coke, coal chars, pyrolysis, oxidation reactivity, oxy-fuel combustion, activation energy.

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Current Issue: Vol. 36, Issue 3, 2019




Publishing schedule:
No. 1: 20 March
No. 2: 20 June
No. 3: 20 September
No. 4: 20 December