Biomass Steam Hot Water Boiler SNCR Denitrification Equipment

Today, air pollution has a serious impact on the environment, making the use of environmental protection equipment particularly important. Our company, Shiheng, specializes in desulfurization, denitrification, dust removal, and exhaust gas treatment. The desulfurization and denitrification equipment produced by our company can be customized or purchased in bulk. After use, it can achieve near 'zero' emissions. Biomass steam hot water boiler commonly uses denitrification processes such as SCR, SNCR, and PNCR, which can be selected as needed. Below is an introduction to the process principle of the biomass steam hot water boiler SNCR denitrification equipment:

Biomass SNCR (Selective Non-Catalytic Reduction) denitrification is a widely used denitrification technology applied in coal-fired boilers, biomass boilers, and other industrial kilns.

SNCR technology operates within a narrow temperature range of 850~1050°C in the boiler furnace. Without the participation of a catalyst, reducing agents such as NH3 or urea are used to selectively reduce NOx gases in the boiler flue gas, essentially without reacting with O2 in the flue gas.

The main reactions for reducing NOx with NH3 or urea are:

Using NH3 as the reducing agent:

4NO + 4NH3 + O2 → 4N2 + 6H2O

4NO2 + 2NH3 + O2 → 3N2 + 6H2O

The main chemical reactions using urea as the reducing agent are:

2CO(NH2)2 + 4NO + O2 → 4N2 + 2CO2 + 4H2O

6CO(NH2)2 + 8NO2 + O2 → 10N2 + 6CO2 + 12H2O