660MW锅炉低氮旋流燃烧器NOx排放调整试验研究
摘要：针对某厂660MW超临界锅炉改造后低NOx旋流燃烧器特点,通过变工况(氧量、不同层燃烧器配风方式、二次风挡板开度、中心风挡板开度、三次风旋流强度、四次风旋流强度等)调整试验,分析了燃烧器NOx排放特性及经济性。试验结果表明:运行氧量、不同层燃烧器配风方式及燃烧器调整方式均对NOx排放有一定影响,建议按照以下方式运行:1)运行中将氧量控制在2.3%左右可以实现环保性和经济性的平衡;2)主燃区采用正塔配风,即上层煤粉燃烧器风门开度40%,中层开度60%,下层开度80%;3)将燃烧器做以下设置:中心风、二次风维持较小开度,三次风叶片角度30°,四次风叶片角度45°。
Abstract:In allusion to a 660MW supercritical boiler after the transformation of low NOx swirl burner, through the variable conditions (different oxygen, different air distri-bution mode, the secondary air opening, the central air opening, different air swirl intensity of the tertiary air and the quartic air, etc.), the NOx emission characteristics and burner economy were measured.The test results showed that there are oxygen, the operation of air distribution of different layers burner and burner adjustment has certain in-fluence on the emission of NOx.The Operation suggestions were given:1) the oxygen should be controlled at about 2.3%, the environmental protection and economic of boiler could get balance; 2) the air distribution of different layers of burner should adopt as tower form, i.e.the upper burn-er throttle opening 40%, middle opening 60%, the lower opening 80%; 3) the burner adjustment should following this settings:the central air burner and secondary air holds a small opening, tertiary air vane angle of 30 degrees, quar-tic air vane angle of 45 degrees.
标题：660MW锅炉低氮旋流燃烧器NOx排放调整试验研究
title:Experimental Study on NOx Emission Regulation of LNASB Burner for 660MW Boiler
作者：徐鹏志, 刘朋彬, 陈军华, 车方
authors:XU Pengzhi, LIU Pengbin, CHEN Junhua, CHE Fang
关键词：旋流燃烧器,低氮燃烧,NOx排放,燃烧调整,
keywords:LNASB burner,low NOx Combustion,NOx emission,combustion regulation,
发表日期：2017-10-30
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