4. Conclusions
The gasification kinetics and influence factor of semi-char-CO2
gasification were investigated. The carbon conversion of semichar
increases with the decrease of particle size. The gasification
reactivities of semi-chars can be ranked as 400 C semichar
> 300 C semi-char > 500 C semi-char > 600 C semi-char.
The semi-char obtained in the H2 atmosphere has the best reactivity,
while the semi-char obtained in the CO2 pyrolysis atmosphere
has the worst reactivity. The volatile matter, FC and ash content are
found to be important factors that affect the gasification reactivities
of chars. The best model for describing the bio-char was RPM