Environmental Engineering Reference
In-Depth Information
TABLE 5.5
Applicable Heating Forms
Descriptions
Example 1
Example 2
Example 3
Example 4
Furnace type
Complete RG
combustion
Conventional
furnace
Noncombustion +
RG combustion
Noncombustion
+ RG
combustion
Targeted discharging
temperature
Exists
Exists
Exists
Exists
Form of semifinished
steel
Slab
Slab
Slab
Round billet
RG = regenerative.
TABLE 5.6
Examples of Heat Patterns and Temperature Rising Curves
Example 1. Rising curves of slab heat
in a high performance furnace
Example 2. Rising curves of slab heat
in a conventional furnace
1400
1400
1200
1200
1000
1000
800
800
600
600
Upper furnace
temperature
Top surface
Center
Upper furnace
temperature
Top surface
Center
400
400
200
200
0
0
0
10
20
30
0
10
20
30
40
Time, min
Time, min
Example 3. Rising curves of slab heat in a high
performance furnace (with a noncombustion zone)
Example 4. Rising curves of round billet heat in a high
performance furnace (with a noncombustion zone)
1400
1400
1200
1200
1000
1000
800
800
600
600
Upper furnace
temperature
Top surface
Center
Upper furnace
temperature
Top surface
Center
400
400
200
200
0
0
0
10
20
30
40
0
5
10
15
20
25
Time, min
Time, min
 
 
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