The SNCR+SCR mixed flue gas denitrification technology leverages the advantages of low investment and high efficiency of the SNCR process. The reducing agent of the SNCR process is injected into the furnace, and the catalytic reaction is carried out using escaped ammonia. The technology is combined with the SCR process to further remove NO_{x. The mixed denitrification process uses urea as the absorbent, which effectively combines a special SNCR process in the furnace with a simple back-end SCR denitrification reactor. It has the characteristics of low catalyst dosage, high denitrification efficiency, and low operating costs.}

_{Technical Features:}

◆Compared to SCR engineering, the cost has been reduced;

_{◆High denitrification efficiency;}

_{◆Low catalyst usage and low recovery rate;}

_{◆Smaller than SCR reactors, it has better spatial applicability;}

_{◆The resistance of the denitrification system is low, and the output of the induced draft fan is small;}

_{◆The corrosion and ABS blockage caused by SO2/SO3 conversion are minimal;}

_{◆Reduce the sensitivity of SCR catalyst to coal;}

_{◆Urea can be safely used as a reducing agent without the need for a pyrolysis system;}

_{◆Implement step by step and achieve phased implementation.}