论文信息 - Reduction of NOx in a Regenerative Industrial Furnace With the Addition of Methanol in the Fuel

Reduction of NOx in a Regenerative Industrial Furnace With the Addition of Methanol in the Fuel

The analysis of the combustion process and NOx emission in a gas-fired regenerative industrial furnace has been carried out numerically. The effect of the additive, methanol (CH 3 OH), to the fuel on the NOx emission is studied. A moment closure method with the assumed β Probability Density Function (PDF) for the mixture fraction is used to model the turbulent non-premixed combustion process in the furnace. The combustion model is based on the assumption of instantaneous full chemical equilibrium. The P-1 model is chosen as the radiation model, and the Weighted-Sum-of-Gray-Gases Model is used to calculate the absorption coefficient. The numerical results showed that the use of CH 3 OH is effective in the reduction of NOx in a regenerative industrial furnace. The mechanism of NOx reduction by the use of CH 3 OH is also discussed.

Jin Jiang | Chao Zhang | Qing Jiang

[1] C. Westbrook,et al. Chemical kinetic modeling of hydrocarbon combustion , 1984 .

[2] P. Cheng. Two-dimensional radiating gas flow by a moment method , 1964 .

[3] Chao Zhang,et al. Effects of NO Models on the Prediction of NO Formation in a Regenerative Furnace , 2000 .

[4] V. Zamansky,et al. Oxidation of NO to NO2 by Hydrogen Peroxide and its Mixtures with Methanol in Natural Gas and Coal Combustion Gases , 1996 .

[5] R. Hanson,et al. Survey of Rate Constants in the N/H/O System , 1984 .

[6] T. F. Smith,et al. Evaluation of Coefficients for the Weighted Sum of Gray Gases Model , 1982 .

[7] M. Pinar Mengüç,et al. Thermal Radiation Heat Transfer , 2020 .

[8] Michael J. Pilling,et al. Evaluated Kinetic Data for Combustion Modelling , 1992 .

[9] A. Coppalle,et al. The total emissivities of high-temperature flames , 1983 .

[10] J. P. V. Doormaal,et al. ENHANCEMENTS OF THE SIMPLE METHOD FOR PREDICTING INCOMPRESSIBLE FLUID FLOWS , 1984 .

[11] Y. Tsukamoto,et al. Optimizing Control of NOx and Smoke Emissions from DI Engine with EGR and Methanol Fumigation , 1992 .

[12] Chao Zhang,et al. The numerical and experimental study of non-premixed combustion flames in regenerative furnaces , 2000 .

[13] J.-Y. Chen,et al. Application of a robust β-pdf treatment to analysis of thermal NO formation in nonpremixed hydrogen-air flame , 1994 .