1. Background information
Kilns are made of refractory materials and used to calcine materials or products. According to the variety of calcined materials, they are mainly divided into cement kiln, glass kiln, enamel kiln, ceramic kiln, lime kiln, etc. The flue gas produced by industrial kilns is one of the main causes of atmospheric pollution. The composition of flue gas is very complex, including sulfur compounds, carbon compounds and nitrogen oxides. SCR technology is mainly used to treat the nitrogen oxides, and a large amount of smoke and dust in it will affect the denitration efficiency and service life of SCR.
SCR process flow
2. New process of StarOne
StarOne has developed a new process for the defects of traditional SCR technology, such as low efficiency, high energy consumption, large land occupation, large investment and complex process.
New process flow of StarOne
3. Process advantages of StarOne
1. The denitration efficiency is high, which can reach 95%, and the maximum denitration efficiency can reach 98%.
2. The selected catalyst can maintain NOx at a high conversion level, the ammonia escape concentration is less than 3ppm (V), and the conversion rate of SO2 / SO3 is controlled at the level of ≤ 1%.
3. Ammonia can be sprayed at the front end of the dust and nitrate integrated system without ammonia spraying grid. The flue gas can be fully mixed with NOx by filtering through the filter element.
4. The dust and nitrate integrated system has the advantages of simple operation, low cost, less land occupation, good stability and high reliability.
5. Low energy consumption without temperature rise. The system can remove dust and denitration at 290-350 ℃.
6. Dust removal first and then denitration. The pore size of SCR catalyst can be selected as small pore size catalyst, which greatly reduces the volume of catalyst.
7. Ammonia gasification can be realized by directly using the clean flue gas from the integrated dust and nitrate outlet.
