The proper operation of the Reheating Furnace is dependent of gas quality used in its Burners, that is, it is necessary a " solution " that generate a gas to burner into the furnace with characteristic specific for ensure the better performance.
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GAS MIX STATION for REHEATING FURNACE
1. GAS MIX STATION for REHEATING FURNACE in Steel Plants
NG “ Natural Gas “ COG “ Coke Oven Gas “ BFG “ Blast Furnace Gas “
NG
COG MIX
BFG GASmix to FURNACEMIX STATION
The proper operation of the reheating furnace is dependent of gas quality used in its
burners, that is, it is necessary a " solution " that generate a gas to burner into the furnace
with characteristic specific for ensure the better performance.
" Gas Mix Station Unit OPERATED with COG + NG & BFG ".
2. GAS MIX STATION for REHEATING FURNACE in Steel Plants
MAIN FACTURES of OPERATING
FURNACE
Burners Type ON-OFF
Gas mix “ LHV = 2300Kcal/m3 “
Temperature Control by Zone
Pulse Firing Burner Control
Ideal Condition => COG + BFG
Normal Condition => COG + BFG + NG
LHVmix => 2300 Kcal/m3 “ reference “
LHVcog => 4300 Kcal/m3 “ reference “
LHVbfg => 750 Kcal/m3 “ reference “
LHVng => 9600 Kcal/m3 “ reference “
6. GAS MIX STATION for REHEATING FURNACE in Steel Plants
NOTE
Point A: Good condition to operate “ No Natural Gas consumpition “
Point B: Bad condition to operate “ No COG consumpition “
0.436619718
0.195774648
0.563380282
0.704225352
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
COG&BFG
NATURAL GAS
MIX GAS " RATIO COG, NG & BFG "
COG BFGA
B
A
B
7. GAS MIX STATION for REHEATING FURNACE in Steel Plants
978.87
3521.13
500.00
0
1000
2000
3000
4000
5000
6000
7000
8000
0 10 20 30 40 50 60 70 80 90 100
MIX GAS " COG + NG + BFG "
COG BFG NG
%
8. GAS MIX STATION for REHEATING FURNACE in Steel Plants
2183.10
0.00
2816.90
0
1000
2000
3000
4000
5000
6000
0 10 20 30 40 50 60 70 80 90 100
MIX GAS " COG + BFG "
COG NG BFG
%
9. GAS MIX STATION for REHEATING FURNACE in Steel Plants
NG “ Natural Gas “ COG “ Coke Oven Gas “ BFG “ Blast Furnace Gas “
NG
COG MIX
BFG GASmix to FURNACEMIX STATION
5000m3/h
500m3/h
978m3/h
3521m3/h
9600Kcal/m3
2300Kcal/m3
4300Kcal/m3
750Kcal/m3
OVERVIEW “ GAS = COG + NG + BFG “
RATIO ADJUSTED
NG = 0.1
COG = 0.1957
BFG = 0.7042
10. GAS MIX STATION for REHEATING FURNACE in Steel Plants
NG “ Natural Gas “ COG “ Coke Oven Gas “ BFG “ Blast Furnace Gas “
NG
COG MIX
BFG GASmix to FURNACEMIX STATION
5000m3/h
0m3/h
2183.1m3/h
2816.9m3/h
9600Kcal/m3
2300Kcal/m3
4300Kcal/m3
750Kcal/m3
OVERVIEW “ GAS = COG + BFG “
RATIO ADJUSTED
NG = 0
COG = 0.4366
BFG = 0.5633