Combustion of Fixed Carbon in Supercritical Water

Abstract:

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The combustion behavior of fixed carbon in supercritical water was explored by a batch reactor. Effects of reaction parameters such as reaction temperature, time, oxygen stoichiometric ratio and stirring rate were investigated. Fixed carbon was difficult to burn out, even if in a harsh condition the conversion of fixed carbon was only 51%. It is determined that for the temperature below 450°C, the process of oxidation was limited by the reaction rate between oxygen and particle surface. For the temperature above 550°C, the rate of oxygen mass transfer to the particle surface was the rate-limiting step. In the transition zone of temperature, surface reaction was comparable to mass transfer in limiting reaction rate. Only trace amount of carbon monoxide was produced at 500°C, and no carbon monoxide was detected at 600°C.

Info:

Periodical:

Advanced Materials Research (Volumes 347-353)

Edited by:

Weiguo Pan, Jianxing Ren and Yongguang Li

Pages:

277-280

DOI:

10.4028/www.scientific.net/AMR.347-353.277

Citation:

H. H. Ma et al., "Combustion of Fixed Carbon in Supercritical Water", Advanced Materials Research, Vols. 347-353, pp. 277-280, 2012

Online since:

October 2011

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Price:

$35.00

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