School of Energy and Environment, Southeast University, Nanjing 210096, China.
Bioresour Technol. 2011 Jul;102(14):7211-7. doi: 10.1016/j.biortech.2011.04.090. Epub 2011 Apr 30.
NO formation during combustion of four typical kinds of straw (wheat straw, rice straw, cotton stalk and corn stalk) which belong to soft straw and hard straw was studied in a tubular quartz fixed bed reactor under conditions relevant to grate boiler combustion. Regarding the real situation in biomass fired power plants in China, NO formation from blended straw combustion was also investigated. Nitrogen transfer during blended straw pyrolysis was performed using a thermogravimetric analyzer (TGA) coupled with a Fourier transform infrared (FTIR) spectrometer. The results show that NO conversion for the four straws during combustion is distinctive. Over 70% fuel-N converts into NO for cotton stalk, while only 37% for wheat straw under the same condition. When wheat straw and cotton stalk were mixed, N-NO conversion increases. The limestone addition promotes NO emission during cotton stalk combustion. The presence of SO(2) in atmosphere suppresses NO formation from straw combustion.
在与炉排燃烧相关的条件下，在管状石英固定床反应器中研究了属于软秸秆和硬秸秆的四种典型秸秆（小麦秸秆、水稻秸秆、棉花秸秆和玉米秸秆）在燃烧过程中是否形成 NO。针对中国生物质发电厂的实际情况，还研究了混合秸秆燃烧产生的 NO 形成情况。使用热重分析仪（TGA）与傅里叶变换红外（FTIR）光谱仪联用进行了混合秸秆热解过程中的氮转移研究。结果表明，四种秸秆在燃烧过程中的 NO 转化情况明显不同。在相同条件下，棉花秸秆的燃料氮转化为 NO 的转化率超过 70%，而小麦秸秆仅为 37%。当小麦秸秆和棉花秸秆混合时，N-NO 转化率增加。添加石灰石会促进棉花秸秆燃烧过程中 NO 的排放。大气中 SO（2）的存在会抑制秸秆燃烧生成 NO。
