中文摘要：

在小型立式流化床反应管中采用化学反应动力学模型,考察生物质气化气再燃还原减少烟气中N2O排放的过程。通过改变反应条件（初始O2浓度、初始H2O（g）浓度、初始N2O浓度、NH3浓度）,分析了烟气组分及NH3选择性非催化对N2O还原分解的影响。结果表明,烟气初始含H2O（g）量和NH3与N2O摩尔比的升高均会抑制N2O的还原和分解,当烟气初始含H2O（g）量在0%～20%内增大,NH3与N2O摩尔比在0.5～1.5内增大时,N2O的还原分解率均降低。

英文摘要：

In a small vertical fluidized bed reactor,the process of N2O decomposition by biomass gasification gas reburning was researched with chemical reaction kinetics model in this paper.The influence of flue gas components and selective non-catalytic reduction of NH3 on N2O decomposition was analyzed with changing reaction conditions,such as initial O2 and H2O（g） concentration in flue gas,and the ratio of NH3 to N2O.The results show that the reduction of N2O emission is restrained by the increase of H2O（g） and NH3 content.With the initial H2O（g） content increased from 0% to 20%,and the NH3/N2O increased from 0.5 to 1.5,the N2O decomposition rate was decreased.