Model Experimental Study of SCR Reactor Flow Optimization in 1000MW Coal-fired Boiler

摘要

The structure and arrangement of flue and deflector modules have significant influences on flue gas flow field and distribution of NH_3 concentration in a SCR reactor. Numerical calculation about distribution of velocity, NH3 concentration and flow resistance in the deNOx reactor of a 1000MW power plant boiler with CFD have provided the optimal combination of layout scheme of guide plates. Al:15 experimental model of the reactor was constructed based on the principles of similarity theory, and model test was carried out with air substituting for flue gas, and CO for NH_3.The results of model test and numerical modeling were basically similar and met the design requirements. The model experiments indicated that the optimum program could achieve purpose of the flow field optimization.