Selective non-catalytic reduction (SNCR) using urea solution injection was applied to a 125 MW boiler based on conventional pulverized-coal reburning process. Experiments were mainly conducted at the load of 95 MW and 125 MW, and the experimental conditions were varied independently by temperature, NH3/NO molar ratio, mass flow rate, and atomization pressure on NOx emission. Experimental results showed that NOx reduction ratio changed with the above factor. Results showed that NOx emission was below 350 mg/m3 (6% O2 volume fraction) under varied loads with SNCR on operation, namely a NOx reduction of 30%45% can be achieved.
HUANG Zhen-yu, SUN Yong, CHEN Feng, YANG Wei-juan, CHEN Zhen-chao, ZHOU Jun-hu,. Experimental research on SNCR applied in 125 MW
power plant boiler. J4, 2012, 46(10): 1778-1783.
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