Research on Optimization of Low Nitrogen Combustion in Coal-fired Boilers
This paper discusses the optimization strategy of low-nitrogen combustion in coal-fired boilers,aiming to reduce environmental pollution and improve combustion efficiency.As the core equipment in industrial production,the nitrogen oxide emission of coal-fired boilers is an urgent problem to be solved.Low-nitrogen combustion technologies inhibit the formation of nitrogen oxides by controlling combustion conditions,including air-staged combustion,fuel staged combustion,and low-nitrogen burner technologies.At present,the control of nitrogen oxides in coal-fired boilers mainly relies on post-combustion treatment technology,but the cost is high and the operation is complex.Therefore,optimizing the combustion process becomes key.Reasonable selection of burners,adjustment of burn-out air swing angle,scientific adjustment of furnace pressure,and optimization of OFA nozzle and SOFA air design are all effective optimization measures.In addition,the fine adjustment and control of pulverized coal fineness also has a significant impact on the low nitrogen combustion efficiency.By implementing these optimization strategies,coal-fired boilers can operate greener and more efficiently,meeting increasingly stringent environmental requirements.
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