In this paper, a new type evaporator-inert particle evaporator, which is adapted to tea liquid infusion evaporating. The resign and build a inert particle fluidized bed evaporator. Experimental study and theoretical analysis on the heat transfer situation of the new evaporator were carried out. Meanwhile, the performance of preventing and cleaning fouls was studied for this new evaporator. Experimental results show that: Under the same conditions, the heat transfer coefficient of inert particle fluidized be...