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《Proceedings of the Csee》 2005-01
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LOW NO_X EMISSION STUDY FOR SIX POINT TANGENTIAL BURNING OF PC BOILER FIRING LIGNITE COAL

QIN Ming1, WU Shao-hua1, SUN Shao-zeng1, SUN Rui1, CHENG Qing-gang2 (1. Harbin Institute of Technology, Harbin 150001, Heilongjiang Province, China; 2. LongTech Environment Technology Co. Ltd, Harbin 150001, Heilongjiang Province, China)  
For reducing NOx emission of six point tangential burning PC(pulverize coal) boiler firing lignite coal, the paper describe the test study of NOx emission of one 670t/h PC boiler firing lignite coal after it was modified with horizontal lean-rich combustion and air stage feeding technology. The test studied the influence of each kind of air feeding type on NOx emission and combustion. The test showed that through applying air stage technology combining the horizontal lean-rich combustion, the NOx emission of this boiler was reduced above 23%, thus to 388.3mg/m3. Meanwhile, the boiler efficiency kept high and its low rate capacity was improved.
【CateGory Index】: TK227
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