FLUIDIZING PERFORMANCE RECOVERING METHOD FOR FLUIDIZED BED CATALYST

摘要

PURPOSE: To provide a recovering method for fluidizing performance important for a pluidized bed catalyst, particularly for a fluidized bed catalyst for preparing phthalic anhyride. CONSTITUTION: In a method of recovering the fluidizing performance of a fluidized bed catalyst, the volume of water beyond the pore volume of catalyst is added to the catalyst and then dried to recover the fluidizing performance of the fluidized bed catalyst. The method is suitable for a fluidized bed catalyst for preparing phthalic anhyride.