基于化学动力学的生物质颗粒燃烧排放NO特性模拟与验证
发布时间：2018-10-05 07:34
【摘要】：为研究生物质颗粒燃料燃烧NO排放规律及其生成机理,采用CFD和Chem Kin联合仿真,建立试验锅炉燃烧筒CFD网络模型,应用Chem Kin接口导入简化的17组分58基元反应机理,建立Chem Kin-PSR反应模拟网络,选用Reaction Design C2_NOx详细机理,对棉秆、玉米秸秆、木质3种生物质颗粒NO排放进行模拟。结果表明,NO生成量:棉秆玉米秸秆木质;NO排放量随过量空气系数的增加先增大后减小,在过量空气系数为1.7附近达到峰值。将模拟结果与试验结果进行比较,证明了模型和化学反应机理的正确性,为生物质燃料燃烧NO排放的预测与控制提供参考。
[Abstract]:In order to study the NO emission law and its formation mechanism of biomass pellet fuel combustion, the CFD network model of experimental boiler combustion cylinder was established by CFD and Chem Kin simulation, and the simplified 58 elementary reaction mechanism of 17 components was introduced by Chem Kin interface. The Chem Kin-PSR reaction simulation network was established and the detailed mechanism of Reaction Design C2_NOx was selected to simulate the NO emissions from cotton stalk, corn straw and wood biomass particles. The results showed that the no emission from cotton stalk and maize straw increased firstly and then decreased with the increase of excess air coefficient, and reached the peak value when the excess air coefficient was about 1.7. By comparing the simulation results with the experimental results, the correctness of the model and the chemical reaction mechanism is proved, which provides a reference for the prediction and control of NO emissions from biomass fuel combustion.
【作者单位】： 中国农业大学工学院;
【基金】：中央高校基本科研业务费专项资金(2015GX003) 中国农业大学教育基金会“大北农教育基金”资助项目(1071-2413003)
【分类号】：X701;S216
本文编号：2252541
[Abstract]:In order to study the NO emission law and its formation mechanism of biomass pellet fuel combustion, the CFD network model of experimental boiler combustion cylinder was established by CFD and Chem Kin simulation, and the simplified 58 elementary reaction mechanism of 17 components was introduced by Chem Kin interface. The Chem Kin-PSR reaction simulation network was established and the detailed mechanism of Reaction Design C2_NOx was selected to simulate the NO emissions from cotton stalk, corn straw and wood biomass particles. The results showed that the no emission from cotton stalk and maize straw increased firstly and then decreased with the increase of excess air coefficient, and reached the peak value when the excess air coefficient was about 1.7. By comparing the simulation results with the experimental results, the correctness of the model and the chemical reaction mechanism is proved, which provides a reference for the prediction and control of NO emissions from biomass fuel combustion.
【作者单位】： 中国农业大学工学院;
【基金】：中央高校基本科研业务费专项资金(2015GX003) 中国农业大学教育基金会“大北农教育基金”资助项目(1071-2413003)
【分类号】：X701;S216
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