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Title	Development and Application of Direct Fired Regenerative Burner Heating System
Creator	Suzukawa, Yutaka; Mori, Isao; Sugiyama, Syunichi; Hasegawa, Toshiaki
Publisher	Digitized by J. Willard Marriott Library, University of Utah
Date	1998
Spatial Coverage	presented at Maui, Hawaii
Abstract	NKK Corporation in collaboration with Nippon Furnace Kogyo Kaisha, LTD. have developed HRS (high-cycle regenerative burner heating system) . The newly developed HRS i s equipped with a honeycomb regenerator. A honeycomb regenerator has advantages in compactness, thermal response and heat exchange efficiency over a conventional ball regenerator. NOx emission from the burner is 40ppm (@ 11% oxygen concentration) at preheated air temperature 1570K. This was achieved by applying fuel staged combustion and optimized burner hardware design. NKK Corporation has introduced HRS into No. 1 Hot Strip Mill reheating furnace in Fukuyama Works. The introduction of an all-regenerative-burner reheating furnace into a large scale hot strip mill process is the first trial in the steel making industry in Japan. The newly constructed reheating furnace has a heating capacity of 230 tons of slab per hour and it has 76 regenerative burners. Energy saving of the new furnace is 25%, and reduction of NOx emission is 60% compared with the replaced furnace. This newly developed regenerative burne heating system contributes not only to the efficient use of energy but also to the reduction of C02 /NOx emission. This paper describes the R&D work and gives an example of HRS application to a large scale slab-reheating furnace.
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/s6j105rr
Setname	uu_afrc
ID	13636
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6j105rr

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Title	Page 10
Format	application/pdf
OCR Text	Show 10 NOx emission was developed. This new system was applied to No.3 reheating furnace of No.1 hot strip mill at NKK Fukuyama Works, and demonstrated that ultimately preheated air combustion and a remarkable reduction of NOx emission can be achi eved at the same ti me. Thi s i s the fi rst i n the worl d whi ch can easi 1 y be applied to almost all the heating systems. This technology is beginning to change "the common sense of a combustion enginner". More than 120 facilities have introduced 660 sets of HRS, and its application is widely spreading in Japan. [AKNOWLEDGMENTS] The authors gratefully acknowledge Mr.Kazuhiko Umehara and NGK INSULATORS, LTD. for their cooperation. [REFERENCES] 1. S.Relph, STEEL TIMES, pp.150-151(1988.3) 2. CHUGAIRO-HOTWORK Catalog ECB-250-01 3. Kawasaki Steel, private letter(ISM Meeting, 1996)(in Japanese), 4. NSC, private letter(ISI'J Meeting,1996)(in Japanese), 5. Y.Suzukawa et al, RAN95(Nagoya, Japan),Paper No.3-A-9,(1995) 6. NKK Technical Report, N o .161(1998.3) (in Japanese)
Setname	uu_afrc
ID	13627
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6j105rr/13627