After summarizing the newly developed micro-fluidized bed reaction analysis (MFBRA) and its existing applications

its application to the kinetics of isothermal gasification reaction between coal char and CO2/steam were further extended.The resulting kinetic data were compared with the measurements in thermogravimetric analyzer (TGA).Under minimized limitations of heat and mass transfer

the activation energy of char gasification with CO2 and steam in the kinetically controlled low temperature region was very close to that obtained from TGA

validating the reliability of MFBRA for the analysis of char gasification kinetics.Moreover

the temperature range of the kinetically controlled reaction region was found to be obviously wider in MFBRA than in TGA for both char-CO2 and char-steam reactions.At higher temperatures with evident limitations of heat and mass transfer on the reaction kinetics

the estimated activation energy was obviously higher with MFBRA than that with TGA.All of these further demonstrated that the diffusion limitation in MFBRA was weaker than that in TGA for gasification of coal char.