REGENERATING METHOD OF HEAT RESISTANT FILTER WITH METALLIC FRAME

PURPOSE: To reduce the regeneration cost, to prevent the oxidation of a metallic frame and consequently to unnecessitate polishing of a metallic frame after regenerating a heat resistant filter and to surely regenerate the heat resistant filter. CONSTITUTION: The regenerating method of the heat resistant filter Ml with the metallic frame is for regenerating the used heat resistant filter 13, to which mat and fat stick, by heating in the state mounted in the inside of the metallic frame 11. The heat resistant filter 13 is placed in a hot regeneration furnace setted to a reducing atmosphere or inert atmosphere in the inside and heated up to the temp., at which oils and fats are decomposed, to decompose under heating and remove those from the heat resistant filter 13.