MODELING OF NITROGEN OXIDES EMISSIONS FROM CFB COMBUSTION
In this work, a simplified description of combustion and nitrogen oxides chemistry was implemented in a 1.5D model framework with the aim to compare the results with ones earlier obtained with a detailed reaction scheme. The simplified chemistry was written using 12 chemical components. Heterogeneous chemistry is given by the same models as in the earlier work but the homogeneous and catalytic reactions have been altered. The models have been taken from the literature. The paper describes the numerical model with emphasis on the chemistry submodels. A simulation of combustion of bituminous coal in the Chalmers 12 MW boiler is conducted and the results are compared with the results obtained earlier with the detailed chemistry description. The results are also compared with measured O2, CO, NO and N2O profiles. The simplified reaction scheme produces equally good results as earlier obtained with the more elaborate chemistry description.
CFB 1D modeling nitrogen ozides emission
S.Kallio M.Keinonen
VTT Technical Research Centre of Finland, P.O.Box 1000, FI-02044 VTT, Finland
国际会议
第20届国际流化床燃烧会议(20th International Conference on Fluidized Bed Combustion)
西安
英文
993-998
2009-05-18（万方平台首次上网日期，不代表论文的发表时间）