This paper studied on the CO2 gasification reactivity for biomass, wood chip, using a fixed bed reactor at the gasification temperature ranging from 850℃ to 1050℃. After applying two models to experimental data, it was found that the activation energies (E) of biomass char-CO2 reaction, obtained from the two models, were almost same as those reported in literatures. Overall, the shrinking un-reacted core model (SUCM) was superior to the volume reaction model (VRM). The BET surface area of biomass chars increased with the temperature, but slightly decreased after 950℃, which implied that the maximum gasification temperature of CO2 reactivity in this study was around 950°C.
Keywords. CO2 gasfication; VRM; SUCM; activation energy; BET NOMENCLATURE A pre-exponential factor E activation energy 0 H D standard state enthalpy change Sk rate constant (SUCM) Vk rate constant (VRM) R universal gas constant V R correlative index (VRM) S R correlative index (SUCM) T wall temperature t time it initial time x carbon conversion
How to cite this article
Seo, D.K., Lee, S.K., Kang, M.W., Hwang, J. and Yu, T. (2008). 'Gasification reactivity of biomass chars with CO2'. SET Proceedings, 7(1), pp. 422-428. https://doi.org/10.65582/set.2008.055
