Ultra-low emissions, refers to processes of power generation operation, ending treatment ect. of the thermal power plant coal-fired boiler, a variety of pollutant removal efficiency collaborative integration system technologies are used to make atmospheric emissions of pollutant concentrations in line with emission limits of gas-fired units, i.e. the emission concentrations (reference oxygen content of 6%) of dust, sulfur dioxide and nitrogen oxides are respectively no more than 5 mg / m³, 35 mg / m³, 50 mg / m³, and being the new benchmark of coal-fired generating units of cleaner production level.

 

Recently, Taiyuan, Shanxi Province presented the blue sky, long white clouds of "high face score" atmosphere, which shows unimaginable that here is the "coal capital". It is reported that ultra-low emission price transformation support policy has already begun to enjoyed in there. December 9th, 2015, three departments of the National Development and Reform Commission, Ministry of Environmental Protection, the National Energy Board have been jointly issued "on the implementation of ultra-low emission coal-fired power price support policy related issues," indicating that since January 1st, 2016, onwards to complete the transformation of the ultra-low emission coal-fired power companies to give tariff subsidies. This policy has greatly supported the transformation of ultra-low-emission of the thermal power plants.

 

Tungsten trioxide is a very important functional material, which is widely used in the preparation of display devices, architectural dimming, catalysts for organic reactions and battery cathode materials and other fields, and often be used in the catalyst. Tungsten trioxide can be generated by using ammonium tungstate method, strong thermal decomposition of ammonium tungstate, and adding nitric acid into the ammonium tungstate solution to get precipitation then drying. Judging from the appearance, tungsten trioxide SCR denitration catalyst is generally divided into three forms of cellular, plate and corrugated plate, due to its high denitrification rate, good selectivity, mature and reliable, and other advantages, it is widely used in coal-fired power plants as one of the best denitration technologies, and being the “powerful warrior” of ultra-low emission.

 

With the support of national policy, the continually carried out depth of ultra-low emissions, continuous improvement and application of tungsten trioxide denitration catalyst, our living environment will become increasingly better.