Environmental Engineering Reference
In-Depth Information
7
70
60
6
5
4
3
2
1
50
40
30
20
10
0
0.1
0
0.1
1
10
100
1000
1
10
100
1000
Heat capacity in log.scale ton/ch
Heat capacity in log.scale ton/ch
(b) Heat efficiency
(a) Fuel unit consumption
FIGURE A.8
Heating capacity of aluminum-melting furnace.
TABLE A.4
Heating Capacity, Fuels Unit Consumption, and Heat Efficiency According
to Type of Furnace
Fuel Unit
Consumption,
GJ/ton
Heat
Efficiency,
%
Heating
Capacity
Type of Furnace
Classification
1.
Heating furnace
(for metals use)
Continuous
furnace
Large
Middle
>100 ton/h
40-100
1.31
1.70
55
45
Small
<40
2.18
38
Batch furnace
Large
>80 ton/ch
1.49
42
Middle
10-80
2.65
33
Small
<10
6.28
10
2.
Heat treatment furnace
(for metals use)
Continuous
furnace
Large
Middle
Small
>20 ton/h
5-20
<5
1.23
1.80
2.17
52
37
27
Batch furnace
Large
>25 ton/ch
1.67
26
Middle
10-25
2.09
24
Small
<10
2.97
18
3.
Aluminum-melting
furnace
(for nonferrous use)
Batch furnace
Large
Middle
Small
>50 ton/ch
15-50
<15
2.97
3.47
4.71
40
34
27
A.4
EVALUATION BASED ON RESULTS OF
INVESTIGATION
A.4.1 E
E
N
I
VALUATION
OF
STIMATED
UMBER
OF
NDUSTRIAL
F
URNACES
1.
Facilities emitting soot that are controlled by the law of prevention of
atmosphere pollution mainly consist of furnaces with capacity over 50 l/h
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