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

Abstract:

The structure and arrangement of flue and deflector modules have significant influences on flue gas flow field and distribution of NH₃ concentration in a SCR reactor. Numerical calculations about distributions 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. A1:15 experimental model of the reactor was constructed based on the principles of similarity theory, and cold model test was carried out with air substituting for flue gas, and CO for NH₃.The consequences of model test and numerical modeling were basically similar and met the design requirements. Moreover, deposition characteristics of the experimental model was studied with fly ash from coal-fired boiler, which demonstrated that deposition was not severe under both 50% and 100% boiler full load. The model experiments indicated that the optimum program could achieve purpose of the flow field optimization.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 2177-2181
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.2177
• Online since: June 2014
• Authors: Wen Yan Li, Shi Yong Wang, Xiao Ming Wang
• Keywords: Cold Model Test, DeNO_X, Optimization of Flow Field, SCR

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