Hits:

Indexed by:会议论文

Date of Publication:2015-01-01

Included Journals:CPCI-S、SCIE

Page Number:750-754

Key Words:Incinerator; Numerical simulation; Excess air ratio; Combustion Characteristic; NOx emissions

Abstract:Numerical simulation of combustion process of a 10 t/h wastewater incinerator has been performed by FLUENT. The results reveal the characteristics of combustion, flow and heat transfer, mass transfer. Simulations of combustion in the furnace under different excess air ratios (EAs) have been performed. The results show that with the increasing of excess air ratio, the peak temperature in the furnace decreases gradually, while the temperature distribution becomes more uniform, combustion zone area increases. Furthermore, average NOx concentration at the wastewater incinerator outlet becomes higher gradually with EA increasing. While EA=1.25, the outlet temperature is reasonable and the NOx concentration is low enough. Simulation results agree with the test data, which verify the reliability of the model, providing reliable basis for optimizing the designed operation condition and pollutant control.