Rare Earth Denitrification Catalyst Applied in Environmental Protection

Recent developed rare earth denitrification catalyst has been applied in environmental protection. Recently, the Inner Mongolia Xiejie Environmental Protection Science and Technology Co., Ltd. (Xijie Huanbao) R&D team made a breakthrough in the autonomous region's major science and technology project. The research and development of the rare earth based medium and low-temperature SCR denitration catalyst powder laboratory has been completed and the technology is available for pilot scale-up and industrialization.

Tang Zhicheng, Tungsten Carbide Rods Single Hole a researcher in the project team and a Ph.D. from the Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, said: "The laboratory test results show that the catalyst powder owns the characteristics of good active component dispersion performance, excellent low-sulfur performance. This technology is our country's first rare earth-based medium and low temperature SCR denitration catalyst."

A rare earth-based denitrification catalyst possesses a relatively high reaction temperature (greater than 350°C) and is mainly used for medium and high temperature flue gas denitration (working temperature 350 to 420°C). With the advancement of ultra-low emission work in the steel, cement and glass industries across the country, this technology is of great significance in expanding the application range of rare earth-based medium and low temperature denitration catalysts.

With the continuous improvement of the installed capacity and equipment level of our country's power generation equipment, the market demand for honeycomb porous denitrification catalysts suitable for this working unground solid tungsten carbide rods condition has seen a blowout growth in view of the characteristics of large flue gas volume and low dust content of waste heat boilers. "However, the core technology of the honeycomb porous denitrification catalyst has long been mastered by a small number of companies in Europe and the United States, and domestic companies have to pay high technical use fees every year." said Zhou Guanghe, chief engineer of Xijie Huanbao.

At present, based on the high-efficiency vanadium-free rare earth-based flue gas denitration catalyst production technology for environmental protection with our country's independent intellectual property rights, Xijie Huanbao has carried out the research and development of honeycomb porous (60-hole) rare earth denitration catalysts, according to the market demand tungsten carbide burrs blank of waste heat boilers, and successfully solved the technical difficulties, the honeycomb porous (60-hole) rare earth denitrification catalyst has been mass-produced, filling the technical gap and breaking the situation of mainly relying on imports.