Practical Combustion Methods Used in Industries - High Temperature Air Combustion: From Energy Conservation to Pollution Reduction - page 225

6

2 4

HL

1

8

3 5

7

9

Nippon Steel Corporation,
Kimitsu Works

preheating zone heating zone soaking zone

Note 1: 1 2 3 ; none of burners used

4 56 7 8 9

Note 2: ; controlling of thinning the burner

HL

1 3

5 6 7 8 11 12

9 10 13

4

2

1st heating zone 2nd heating zone 3rd heating zone soaking zone

Nippon Steel Corporation,
Oita Works

3 49 10 13

Note 1: ; controlling of thinning the burner

- 678

,

- 11 12 ~

Note 2: 5 , ; controlling of the right and left zones

Note 3: 1 2 ; none of burners used

1 5

3 7

HL

4

8

2

6

NKK, Keihin Works 1st heating zone 2nd heating zone 3rd heating zone soaking zone

1 2

Note 1: ; none of burners used

1 3 5

HL

6

2 4

7 8

Nippon Steel Corporation,
Hirohata Works

preheating zone heating zone soaking zone

controlling of the right and left zones

5

Note1:
; controlling of the right and left zones

6 , 7 8

- -

Note 1: 5 678 ,

FIGURE 4.4 Examples of the shape of slab heating furnace in the hot rolling process. (Circles
and arrows indicate the location of burners.)

FIGURE 4.5 Examples of trial designing of a high performance heating furnace.