Simulation Analysis of Combustion Optimization Scheme for Ultra Supercritical Wall Arrangement Tangential Circle Boiler

doi:10.16182/j.issn1004731x.joss.201709008

Abstract

Abstract: To research the combustion optimization scheme of air distribution type selection and low nitrogen oxides (NOx) emission in a 600MW supercritical wall arrangement tangential circle boiler, a modeling and simulating method which applied computational fluid dynamics (CFD) was proposed, the 3D grid model of the boiler is drawn by CAD software, the turbulence model, the radiation model and the inlet boundary condition of the boiler were determined, the boiler combustion simulation experiment was completed. The simulation results show that compared the change of velocity field, temperature field and NOx generation in the furnace under four type air distribution conditions and different ratios of over-fired air (OFA) and additional air (AA) conditions, the optimum air distribution type positive pagoda type air distribution and the optimum air volume combination of low nitrogen combustion is obtained.

Key words: wall arrangement tangential circle boiler, computational fluid dynamics, positive pagoda type air distribution, low nitrogen combustion

CLC Number:

TP391.9

Li Yingbao, Wang Dongfeng. Simulation Analysis of Combustion Optimization Scheme for Ultra Supercritical Wall Arrangement Tangential Circle Boiler[J]. Journal of System Simulation, 2017, 29(9): 1930-1937.

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