Low-temperature desulfurization and denitrification SCR denitrification equipment

Low-temperature desulfurization and denitrification SCR denitrification equipment

 The denitrification process adopted by SCR denitrification equipment is generally medium and low-temperature SCR denitrification technology. So what is low-temperature SCR denitrification technology? Low-temperature SCR denitrification technology is also one of the flue gas denitrification processes. The low-temperature SCR denitrification equipment process needs to follow the reaction principle of SCR, ensuring that the catalyst in the chemical reaction can adapt to low-temperature environments.

Principle of Low-temperature SCR Denitrification Technology

Low-temperature SCR denitrification equipment requires the reaction temperature of the low-temperature denitrification catalyst to be controlled within the range of 120°C to 300°C. At low temperatures, nitrogen oxide exhaust gases come into contact with the catalyst in the denitrification device. Simultaneously, under the action of reducing agents such as ammonia, ammonia water, or urea, a reduction reaction occurs, converting nitrogen oxides in the flue gas into harmless nitrogen and water through the reduction reaction, thereby achieving the main goal of removing nitrogen oxides from the flue gas. Taking NH3 as an example of a reducing agent, the reaction equations are as follows:

 4NH3+4NO+O2→4N2+6H2O

 4NH3+2NO2+O2→3N2+6H2O

 8NH3+6NO2→7N2+12H2O

 Applicable fields of low-temperature SCR denitrification:

Shiheng low-temperature SCR denitrification technology is very suitable for steel plants, chemical plants, coking plants, waste incineration, biomass power generation, various types of small boilers, cement, construction ceramics, and other industries.