Effect of alkali concentrations and operating conditions on agglomeration/defluidization behavior during fluidized bed air gasification

► Defluidization time decreases as Na concentration increases from 0.8 to 3%. ► Defluidization time decreases as temperature and the amount of bed materials increase. ► No significant change in the trend for this process occurs as the equivalence ratio increases. ► CaO and Al2O3 can prolong this process, and the inhibition level follows the sequence: Al2O3 > CaO.