摘要
利用颗粒物分级采样及烟气实时监测技术,研究稻草在涡旋燃烧炉燃烧时燃烧温度、一二次风配比、过量空气系数等参数对飞灰颗粒排放特性的影响。实验表明稻草燃烧产生的亚微米颗粒PM1及微细颗粒PM1-2.5主要由KCl和K2SO4组成。提高燃烧温度、增大一二次风配比将增加PM1排放浓度。试验中随着一二次风配比的增大或燃烧过量空气系数的增大,不同粒径颗粒的S/Cl摩尔比将增大,而适当的燃烧过量空气系数有利于减少PM和CO排放。
The characteristics of particles emission were studied using the aerosol sampling technology and flue gas mo -nitor.The influence of ash particles properties with different operation parameters of rice straw combustion including the furnace combustion temperature , primary /secondary air ratio and excess air coefficient was investigated .The results showed that the submicron particles PM 1 and the micro-sized particles PM1 -2.5 mostly consisted of sulfate （K2 SO4 ） and potassium chloride （KCl）.A higher temperature and primary air /secondary air ratio can lead to increase emission of PM1 .In addition, a higher primary air /secondary air ratio can lead to decrease S /Cl mole ratios of different size parti-cles, as well as a lower excess air coefficient .It was also found that a properly reduction of excess air coefficient can lead a lower PM1 and CO emission.
出处
《能源工程》
2014年第4期33-38,共6页
Energy Engineering
基金
国家科技支撑资助项目(2012BAA09B01)
中美国际合作资助项目(2011DFA61060)
关键词
涡旋燃烧
颗粒物
生物质
燃烧参数
亚微米颗粒
vortex combustion
particulate matter
biomass
combustion parameter
submicron particle
