Two-Stage Selective Non-Catalytic Process for Nitrogen Oxide Removal from Thermal Generating Unit Flue Gases

The study is aimed at the development of a non-catalytic process for removal of nitrogen oxides from flue gases of thermal generating units. The results of experimental studies of a modified two-stage selective non-catalytic reduction of nitrogen oxides with injection of a reducing agent (urea) below the stoichiometric amount in each stage are described. The possibility of attaining a higher and more stable reducing efficiency compared with the conventional one-stage process and minimization of the formation of ammonia as a secondary pollutant is demonstrated.

Automated summary

The study focuses on developing a non-catalytic process to remove nitrogen oxides from the flue gases of thermal generating units. The experimental results demonstrate the effectiveness of a modified two-stage selective non-catalytic reduction method, where a reducing agent (urea) is injected below the stoichiometric amount in each stage. This approach achieves higher and more stable reducing efficiency compared to the conventional one-stage process while minimizing the formation of ammonia as a secondary pollutant.