Influence of process parameters on nitrogen oxide formation in pulverized coal burners

This paper describes the influence of burner operating conditions, burner geometry and fuel parameters on the formation of nitrogen oxide during combustion of pulverized coal. Main attention has been paid to combustion test facilities with self-sustaining flames, while extensions have been made to full-scale boilers and furnace modeling. Since coal combustion and flame aerodynamics have been reviewed earlier, these phenomena are only treated briefly.

[1]  S. Turns,et al.  The Influence of Fuel Jet Precession on the Global Properties and Emissions of Unconfined Turbulent Flames , 1996 .

[2]  J. L. T. Azevedo,et al.  3-D numerical model for predicting NOx emissions from an industrial pulverized coal combustor , 1994 .

[3]  Chun-Zhu Li,et al.  Formation of HNCO from the rapid pyrolysis of coals , 1996 .

[4]  P. Walker,et al.  Reactivity of heat-treated coals in carbon dioxide at 900 °C , 1975 .

[5]  Stephen Niksa.  Coal combustion modelling , 1996 .

[6]  C. J. Lawn,et al.  Principles of combustion engineering for boilers , 1987 .

[7]  W. A. Fiveland,et al.  An Efficient Method for Predicting Unburned Carbon in Boilers , 1992 .

[8]  F. Lockwood,et al.  The effect of particle size on NO formation in a large-scale pulverized coal-fired laboratory furnace: Measurements and modeling , 1993 .

[9]  János M. Beér,et al.  Reduction of Nitric Oxide by Coal Char at Temperatures of 1250–1750 K , 1981 .

[10]  P. Glarborg,et al.  Kinetic Modeling of Fuel-Nitrogen Conversion in One-Dimensional, Pulverized-Coal Flames , 1991 .

[11]  A. Tomita,et al.  Effect of coal type on the flash pyrolysis of various coals , 1987 .

[12]  G. C. Dusatko,et al.  Measurements of NOx emissions from coal boilers , 1993 .

[13]  Klaus R. G. Hein,et al.  Effect of coal blending and particle size on NOx emission and burnout , 1994 .

[14]  C. P. Fenimore,et al.  Reactions of fuel-nitrogen in rich flame gases , 1976 .

[15]  Stephen Niksa,et al.  Burning velocities of multicomponent organic fuel mixtures derived from various coals , 1995 .

[16]  W. Fiveland,et al.  Use of numerical modeling in the design of a low-NOx burner for utility boilers , 1993 .

[17]  J. Smart,et al.  NOx emissions anf burnout from a swirl-stabilised burner firing pulverised coal: the effects of firing coal blends , 1993 .

[18]  K. Bartle,et al.  Quantification of nitrogen functional groups in coal and coal derived products , 1989 .

[19]  J. Kramlich,et al.  Observations of chemical effects accompanying pulverized coal thermal decomposition , 1988 .

[20]  János M. Beér,et al.  Combustion in swirling flows: A review , 1974 .

[21]  J. Gibson,et al.  NOx control technologies for coal combustion , 1990 .

[22]  J. Pohl,et al.  Nitric Oxide Formation During Pulverized Coal Combustion , 1982 .

[23]  F. C. Lockwood,et al.  The influence of near burner region aerodynamics on the formation and emission of nitrogen oxides in a pulverized coal-fired furnace , 1992 .

[24]  D. W. Pershing,et al.  Physical Mechanisms Governing the Oxidation of Volatile Fuel Nitrogen in Pulverized Coal Flames , 1977 .

[25]  M. Kaess,et al.  Experimental and Numerical Investigation of NOx Formation and its Basic Interdependences on Pulverized Coal Flame Characteristics , 1993 .

[26]  J. Unsworth,et al.  Combustion studies by thermogravimetric analysis: 1. Coal oxidation , 1986 .

[27]  G. Bergeles,et al.  Prediction of staged coal combustion in three-dimensional furnaces , 1994 .

[28]  C. Morley,et al.  The formation and destruction of hydrogen cyanide from atmospheric and fuel nitrogen in rich atmospheric-pressure flames , 1976 .

[29]  W. Peters,et al.  Kinetics of vapor-phase secondary reactions of prompt coal pyrolysis tars , 1987 .

[30]  Godfrey Henry Oliver Palmer,et al.  Cereal science and technology , 1989 .

[31]  T. W. Lester,et al.  Reaction of nitric oxide with bound carbon at flame temperatures , 1989 .

[32]  P. Nelson,et al.  Conversion of fuel nitrogen in coal volatiles to NOx precursors under rapid heating conditions , 1991 .

[33]  F. Lockwood,et al.  Initial stages of the devolatilization of pulverized-coal in a turbulent jet , 1994 .

[34]  H. H. Lowry.  Chemistry of coal utilization , 1963 .

[35]  F. Lockwood,et al.  The Effect of the Near Burner Aerodynamics on Pollution, Stability and Combustion in a PF-Fired Furnace , 1993 .

[36]  D. W. Pershing,et al.  Fate of coal nitrogen during combustion , 1982 .

[37]  MichaelJ. Cooke,et al.  Fundamentals of coal combustion : Edited by L.D. Smoot, published by Elsevier, 1992, 750 pp.; ISBN 0-444-89643-0; Dfl 475.00 , 1994 .

[38]  Klaus R. G. Hein,et al.  Basic effects on NOx emissions in air staging and reburning at a bench-scale test facility , 1996 .

[39]  T. Wall,et al.  Nitrogen oxide formation from Australian coals , 1985 .

[40]  A. F. Sarofim,et al.  Fossil fuel combustion , 1990 .

[41]  Larry L. Baxter,et al.  Nitrogen release during coal combustion , 1996 .

[42]  Roman Weber,et al.  Reduction of NOx and optimisation of burnout with an aerodynamically air-staged burner and an air-staged precombustor burner , 1989 .

[43]  O. Rathmann,et al.  LOCAL MEASUREMENTS OF VELOCITY, TEMPERATURE AND GAS-COMPOSITION IN A PULVERIZED-COAL FLAME , 1994 .

[44]  Brian S. Haynes,et al.  Reactions of ammonia and nitric oxide in the burnt gases of fuel-rich hydrocarbon-air flames☆ , 1977 .

[45]  Peter Glarborg,et al.  Characterization of a full-scale, single-burner pulverized coal boiler: temperatures, gas concentrations and nitrogen oxides , 1994 .

[46]  L. D. Smoot,et al.  EFFECTS OF SWIRLING FLOW ON NITROGEN OXIDE CONCENTRATION IN PULVERIZED COAL COMBUSTORS. , 1986 .

[47]  R. E. Peck,et al.  The Appearance of Nitric Oxide and Cyanide in One-Dimensional Coal Dust/Oxidizer Flames , 1979 .

[48]  A. Hayhurst,et al.  Production of ‘prompt’ nitric oxide and decomposition of hydrocarbons in flames , 1977, Nature.

[49]  G. W. Jones,et al.  Nitrio Oxide Decomposition at 2200–2400°K , 1957 .

[50]  Blaine W. Asay,et al.  Effect of Coal Moisture on Burnout and Nitrogen Oxide Formation , 1983 .

[51]  L. S. Welch,et al.  Variation of nitrogen content and functionality with rank for some UK bituminous coals , 1989 .

[52]  C. P. Fenimore,et al.  Formation of nitric oxide from fuel nitrogen in ethylene flames , 1972 .

[53]  F. Lockwood,et al.  NOx formation and reduction mechanisms in pulverized coal flames , 1994 .

[54]  David G. Lilley,et al.  Swirl Flows in Combustion: A Review , 1977 .

[55]  F. Lockwood,et al.  Assessment of kinetic and mixing-controlled models for the prediction of fuel-NO emissions in P.F. burners , 1994 .

[56]  Jan Erik Johnsson,et al.  Formation and reduction of nitrogen oxides in fluidized-bed combustion☆ , 1994 .

[57]  James A. Miller,et al.  Mechanism and modeling of hydrogen cyanide oxidation in a flow reactor , 1994 .

[58]  E. Hampartsoumian,et al.  Conversion of fuel-bound nitrogen to NO during combustion of pulverised coals in a drop-tube reactor , 1993 .

[59]  Peter Glarborg,et al.  Kinetic modeling and sensitivity analysis of nitrogen oxide formation in well-stirred reactors , 1986 .