中国电机工程学报2008，Vol.28Issue(17)：8-14,7.
200MW锅炉低NOx燃烧系统改造与试验研究
Experimental Study on a 200MW Boiler Retrofitted With Low NOx Combustion System
摘要
Abstract
An experimental investigation to reduce the N0x emission during burning bituminous coal was carried out on a 670t/h tangential pulverized coal firing furnace, with a technique combining horizontal bias combustion (HBC) burners in the primary combustion zone and separated over firing air (SOFA) nozzles above the highest secondary air nozzles. The influence mechanisms of this low NOx combustion system on NOx/CO emission and unburned carbon in fly ash have been measured and studied in situ. The tests indicate the amount of NOx emission can be decreased to less than 300mg/m3 after adopting the reasonable distribution of secondary air, of which the OFA ratio is 30%. The concentration of NOx is lower than 400mg/m3 in any case, and the lowest concentration can reach 250.84mg/m3. Meanwhile, there is little effect on the unburned carbon content in fly ash which varies between l.5% and 3%.关键词
分级燃烧/燃尽风/水平浓淡煤粉燃烧器/NOx排放/飞灰含碳量/煤粉锅炉Key words
staging combustion technique/over firing air/horizontal pulverized coal bias burner/NOx emission/unburned carbon content in fly ash/pulverized coal fired boiler分类
能源科技引用本文复制引用
张晓辉,孙锐,孙绍增,秦明,庄国忠,秦裕琨..200MW锅炉低NOx燃烧系统改造与试验研究[J].中国电机工程学报,2008,28(17):8-14,7.基金项目
国家重点基础研究专项经费项目(2006CB200303):2005年度教育部新世纪优秀人才支持计划项目(NCET-05-0336) （2006CB200303）
国家自然科学基金项目(50576020).Project Supported by Special Fund of the National Priority Basic Research of China (N2006CB200303) （50576020）
Program for New Century Excellent Talents in University of 2005 Project (NCET-05-0336) （NCET-05-0336）
Project Supported by National Natural Science Foundation of China (50576020) （50576020）
