Recycling method of used SCR denitration catalyst

摘要

The present invention relates to a method for recycling and remanufacturing a spent SCR denitrification catalyst. According the method: firstly, preprocessing the spent catalyst to remove impurities and to activate catalytic components such as vanadium, tungsten and molybdenum, etc.; then leaching the spent catalyst to obtain a leach residue and a leachate; after purifying the valuable elements in the leachate simultaneously; and then regulating the ratio of the content of each component to obtain a mixture of catalytic components which is further processed to prepare a new catalyst. The recycling and remanufacturing of the spent SCR denitrification catalyst are truly achieved in the present invention, thereby obtaining the new catalyst from a waste such that the economic and environmental benefits are obvious.