1. Research and development of disposal and utilization technology

Our company has established long-term industry-university research partnerships with 985 domestic universities, South China University of Technology, to jointly promote comprehensive technical cooperation between enterprises and schools in the field of SCR denitrification catalyst regeneration, utilization, and disposal. Following the research on key technologies for the regeneration of deactivated SCR denitrification catalysts and achieving a breakthrough in China's flue gas denitrification catalyst cleaning and regeneration technology, our company has developed a comprehensive utilization technology for the disposal of waste SCR denitrification catalysts, High efficiency extraction of V and W from SCR catalysts with microwave enhanced alkaline leaching for mixed poisoning deactivation and scrapping; Enrichment and separation of leaching solution V and W of spent SCR denitration catalyst and preparation and purification of titanium residue, calcium vanadate and Calcium tungstate as by-products; The ultimate goal is to achieve efficient recycling and reuse of V, W, and Ti from waste SCR catalysts.

2. Technical features and innovations

(1) By using microwave enhanced alkaline leaching nano zero valent iron adsorption enrichment and recovery, waste denitrification catalysts V and W can be efficiently leached, and V and W can be selectively adsorbed and recovered from the leaching solution. Compared with traditional hydrometallurgical extraction methods, this technology has fast V and W leaching and adsorption rates, high leaching and recovery rates, and is simple and efficient.

(2) Using the acid leaching roasting process to purify the leaching residue (crude titanium), the problem of not effectively purifying and utilizing the leaching residue (crude titanium) in existing technologies is solved, and commercial grade titanium dioxide (purity ≥ 93%) is prepared to maximize resource recycling and reuse.