China is the world's largest consumer of coal, which accounts for more than half of the coal thermal power. Fumes of nitrogen oxides (NOx) emissions from coal burning is an important cause of atmospheric haze, photochemical smog, acid rain and other regional pollution, seriously affect human health and social stability. For effective control of NOx emissions from flue gas NOx emissions total, ten countries achieve the desired objectives, improve regional atmospheric environment has a very important significance. The project supported by the National Natural Science Foundation of China, 863, Zhejiang Province, and other major projects, the problem for the flue gas NOx emissions control, based on the changing of coal, coal complex, high-sulfur, high ash and operating conditions fluctuate Frequent and other practical conditions, after 10 years, in the complex for China Coal and operating conditions of efficient denitration catalyst system design and catalyst preparation techniques sets, modified and nitrate mercury catalyst regeneration cooperative control technology, mixing and reaction process technology coupled strengthen many have made substantial innovation and major breakthrough, the successful development and industrial application of a highly efficient catalytic denitration completely independent intellectual property rights of key technologies and outfits. Project implementation process, authorized patents 9 software for the right to register 4; preparation of national / industry standard 12; 46 published papers. Project results in Zhejiang, Jiangsu, Anhui, Guangdong and other provinces and cities in more than a dozen coal-fired utility boilers and other applications, the cumulative installed capacity of 115800MW, cumulative contract amount of about 6.035 billion yuan (nearly three years to complete the unit direct sales income of about 22.86 billion, profits of about 214 million yuan), to promote the national denitration strategic emerging industries development, economic and social benefits significantly.