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生物质热解气再燃用于燃煤流化床N2O的脱除,既减少了矿物燃料的消耗,又减少了污染物的排放,具有良好的发展前景.不同种类生物质热解所产生的气体组分不同,采用化学动力学理论方法,重点研究了3种生物质热解气对流化床中N2O排放的影响,结果显示,在相同条件下,木屑热解气对N2O分解的促进作用比稻壳和橘皮效果好;烟气含氧量增加(1%~8%范围内)对N2O分解起抑制作用;反应温度在1073.15~1323.15K范围内升高时对N2O分解起促进作用,温度为1223.15K时N2O分解率达到99%以上.
Biomass pyrolysis gas reburning is used to remove N2O from coal-fired fluidized bed, which not only reduces the consumption of fossil fuels, but also reduces the emission of pollutants and has good prospects for development.Gas produced by different kinds of biomass pyrolysis Different components, the use of chemical kinetic theory, focusing on the three kinds of biomass pyrolysis gas N2O emissions in the fluidized bed, the results show that under the same conditions, wood chips pyrolysis gas N2O decomposition than Rice hull and orange peel had good effect. The increase of oxygen content in the flue gas (1% ~ 8%) inhibited the decomposition of N2O. When the reaction temperature was increased from 1073.15 to 1323.15K, it promoted the decomposition of N2O. The temperature The N2O decomposition rate reached more than 99% at 1223.15K.