燃尽风风率对四角切圆锅炉燃烧及排放特性的影响  

Effects of SOFA Ratios on Combustion and NO_x Emissions of a Tangentially Fired Boiler

作　　者：任少辉 李跃峰 马仑[2] 黄海 闫心永 陈宏 刘雪冬 黄孝文 Ren Shaohui;Li Yuefeng;Ma Lu;Huang Hai;Yan Xinyong;Chen Hong;Liu Xuedong;Huang Xiaowen(Wuhan Kaidi Green Energy Development And Operation CO.,LTD,Wuhan Hubei 430074,China;State key laboratory of coal combustion Huazhong university of science and technology,Wuhan Hubei 430074,China)

机构地区：[1]武汉凯迪绿色能源开发运营有限公司,湖北武汉430074 [2]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《湖北电力》2017年第7期35-39,共5页Hubei Electric Power

摘　　要：针对某300 MW电厂四角切圆锅炉不同SOFA风率(15%、20%、25%)对燃烧及排放特性展开了数值模拟研究。数值模拟的结果与现场实际情况吻合比较好。实验结果表明:随着SOFA风率的增加,炉膛出口处的CO浓度和飞灰含碳量逐渐上升,而NOx排放浓度逐渐下降;考虑经济性与排放要求,SOFA风风率20%能达到高效低NOx的目的。This paper presents the computational investigation on combustion and emission characteristics of a 300 MW tangentially fired boiler under different SOFA wind rate. The results of numerical simulation agree well with the actual situation. The simulation results show that the concen-tration of CO and the carbon content of fly ash in the outlet of the furnace increase gradually withthe increase of SOFA wind rate,while the concentration of NOxemission decreases gradually. Considering the economic and emission requirements, setting SOFA wind rate to 20%can achieve high-er combustion efficiency and lower NOx emission.

关 键 词：四角切圆锅炉 燃尽风率 燃烧排放特性 数值模拟 

分 类 号：TM621.2[电气工程—电力系统及自动化]