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Title	Improvement of Reducing Flame Burner with Oxygen Enrichment
Creator	Okada, Seiji; Suzuki, Yutaka; Kaminaka, Motofumi
Publisher	Digitized by J. Willard Marriott Library, University of Utah
Date	1998
Spatial Coverage	presented at Maui, Hawaii
Abstract	Recently, in the non-oxidizing furnace (NOF) of the continuous annealing process, steel sheet is heated by reducing and direct fired heating with reducing-flame burner instead of by the radiant tube heating. Firstly we investigated the reductive performance of the burner, and tried to improve the reductive efficiency with preheated and oxygen enriched combustion air. Secondly we attempted to specify the main reductive species by numerical simulation of the laminar coke oven gas (COG) pre-mixed flame. The conclusions are summarized as follows. The oxidized layer on a steel sheet of several mircrons thickness, could be reduced in ten seconds when steel sheet was heated from room temperature to 800°C in a furnace. The reducing flame burner with oxygen enriched combustion air could lead to 1200°C non-oxidizing heating in the open air. As a result of computation, the concentration of H, which is the reductive radical in the reducing flame, was increased by using high temperature flame.
Type	Text
Format	application/pdf
Language	eng
Rights	This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
Conversion Specifications	Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician	Cliodhna Davis
ARK	ark:/87278/s6g73hcj
Setname	uu_afrc
ID	13413
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6g73hcj

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Title	Page 9
Format	application/pdf
OCR Text	Show Table 1. Composition of coke oven gas Spec i es CO co2 H2 CH4 N2 Vol% 6 4 56 32 2 Table 2. Elementary reactions and assigned rate coefficients Forward rate constant are given by kf=ATnexp(-E7R0"0 in c m 3 mole sec unit Reaction (1) H+02 (2) 0+H2 (3) H2+OH (4) OH+OH (5)a)H+H+H2 b)H+H+N2 c) H+H+02 d)H+H+H20 (6) O+O+lvl, (7) OH+H+M2 (8) H+02+M3 (9) H+H02 (10) H+H02 (11) H+H02 (12) 0+H02 (13) OH+H02 (14) CH4+H (15) CH4+OH (16) CH4+0 (17) CH3+0 (18) CH3+02 (19) CH3+OH (20) CH20+H (21) CH20+0 (22) CH20+OH (23) CH20+M (24) CHO+O (25) CHO+H (26) CHO+02 (27) CHO+OH (28) CHO+M (29) CO+OH (30) CO+O+M =OH+0 =OH+H =H+H20 =H20+0 =H2-I-H2 =H2+N2 =H2+02 =H2+H20 = 02 + 1^, =H20+M2 =H02+M3 =OH+OH =02+H2 =H20+0 =OH+02 =H20+02 =Crl3-l-H2 =CH3+H20 =CH3+OH =CH20+H =CH20+02 =CH20+H2 =CHO+H2 =CHO+OH =CHO+H20 =CHO+H+M =CO+OH =CO+H2 =CO+H02 =CO+H20 =CO+H+M =C02+H =C02+M A 2.24E+14 1.74E+13 2.19E+13 5.75E+12 9.20E+16 1.00E+18 1.00E+18 6.00E+19 2.62E+16 1.17E+17 2.70E+18 2.50E+14 2.50E+13 5.00E+13 4.80E+13 5.00E+13 2.24E+4 2.20E+13 1.26E+14 2.00E+14 1.00E+11 4.00E+15 1.25E+10 5.00E+13 4.80E+13 2.00E+16 3.00E+11 2.00E+14 3.00E+13 1.00E+14 5.00E+12 1.51E+7 3.60E+15 n 0.0 0.0 0.0 0.0 -0.6 -1.0 -1.0 -1.25 -0.84 0.0 -0.86 0.0 0.0 0.0 0.0 0.0 3.0 0.0 0.0 0.0 0.0 0.0 -1.0 0.0 0.0 0.0 -1.0 0.0 0.0 0.0 0.0 1.3 1.0 E 16800 9450 5150 780 0 0 0 0 0 0 0 1900 695 1000 1000 1000 8800 5000 12000 2000 10000 0 3200 4600 0 38000 500 0 0 0 19200 764 2600
Setname	uu_afrc
ID	13405
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6g73hcj/13405