Application of a high-temperature & low-dust SCR in a cement plant
With the improvement of environmental protection standards, more and more denitration technologies are applied in Chinese cement plants. Even SCR technology alone has different processes such as high-temperature & high- dust SCR, high-temperature & low-dust SCR, medium-temperature & high-dust SCR, low-temperature & low-dust SCR. Taking the high-temperature & low-dust SCR system in a 5000 t/d cement clinker line as an example, the author introduces the technical process and operation situation.
The ultra-low emission of nitrogen oxides is a major problem faced by Chinese cement plants in recent years. Almost all Chinese provinces require the emission concentration of nitrogen oxides to be lower than 100 mg/m3, and even some provinces require the NOx emission to be lower than 50 mg/m3. Today there are several categories of denitration technologies that have been applied in the Chinese cement industry, such as low-NOx combustion [1], SNCR [2], SCR [3], and LCR (integration of wet desulfurization and denitration) [4]. Among them, the SCR technology has been also widely used in the...
