Combustion of Fixed Carbon in Supercritical Water
| Periodical | Advanced Materials Research (Volumes 347 - 353) |
|---|---|
| Main Theme | Renewable and Sustainable Energy |
| Edited by | Weiguo Pan, Jianxing Ren and Yongguang Li |
| Pages | 277-280 |
| DOI | 10.4028/www.scientific.net/AMR.347-353.277 |
| Citation | Hong He Ma et al., 2011, Advanced Materials Research, 347-353, 277 |
| Online since | October, 2011 |
| Authors | Hong He Ma, Shu Zhong Wang, Lu Zhou |
| Keywords | Combustion, Conversion, Fixed Carbon, Product Distribution, Rate-Limiting Step, Supercritical Water |
| Price | US$ 28,- |
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.
