Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
SlideShare a Scribd company logo

GAS MIX STATION for REHEATING FURNACE

•Download as PPTX, PDF•
•
Carlos Alberto Bertoni
Carlos Alberto Bertoni

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.

1 of 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 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 ".
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 “
GAS MIX STATION for REHEATING FURNACE in Steel Plants 𝑃𝑂𝑊𝐸𝑅𝑡ℎ𝑒𝑟𝑚𝑎𝑙 = 𝐿𝑂𝑊𝐻𝐸𝐴𝑇𝑉𝐴𝐿𝑈𝐸𝑔𝑎𝑠 × 𝐹𝐿𝑂𝑊𝑔𝑎𝑠 [ Kcal/h ] = [ Kcal / m3 ] x [ m3/h ] 𝐴 = 𝐹𝐿𝑂𝑊𝑐𝑜𝑔 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → 𝐹𝐿𝑂𝑊𝑐𝑜𝑔 = 𝐴 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐵 = 𝐹𝐿𝑂𝑊𝑏𝑓𝑔 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → 𝐹𝐿𝑂𝑊𝑏𝑓𝑔 = 𝐵 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐶 = 𝐹𝐿𝑂𝑊𝑛𝑔 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → 𝐹𝐿𝑂𝑊𝑛𝑔 = 𝐶 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝑄𝑚𝑖𝑥 = 𝑄𝑐𝑜𝑔 + 𝑄𝑏𝑓𝑔 + 𝑄𝑛𝑔 → [ m3/h ] = [ m3/h ] + [ m3/h ] + [ m3/h ] → 𝐿𝐻𝑉𝑚𝑖𝑥 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 = 𝐿𝐻𝑉𝑐𝑜𝑔 × 𝐹𝐿𝑂𝑊𝑐𝑜𝑔 + 𝐿𝐻𝑉𝑏𝑓𝑔 × 𝐹𝐿𝑂𝑊𝑏𝑓𝑔 + 𝐿𝐻𝑉𝑛𝑔 × 𝐹𝐿𝑂𝑊𝑛𝑔 → → 𝑃𝐶𝐼𝑔𝑎𝑠 × 𝑄𝑔𝑎𝑠 𝑄𝑔𝑎𝑠 = 𝑃𝐶𝐼𝑐𝑜𝑔 × 𝑄𝑐𝑜𝑔 𝑄𝑔𝑎𝑠 + 𝑃𝐶𝐼𝑏𝑓𝑔 × 𝑄𝑏𝑓𝑔 𝑄𝑔𝑎𝑠 + 𝑃𝐶𝐼𝑛𝑔 × 𝑄𝑛𝑔 𝑄𝑔𝑎𝑠 → → 𝑃𝐶𝐼𝑔𝑎𝑠 = 𝑃𝐶𝐼𝑐𝑜𝑔 × 𝐴 + 𝑃𝐶𝐼𝑏𝑓𝑔 × 𝐵 + 𝑃𝐶𝐼𝑛𝑔 × 𝐶 → " 𝑃𝐶𝐼𝑔𝑎𝑠 = 𝐴 × 𝑃𝐶𝐼𝑐𝑜𝑔 + 𝐵 × 𝑃𝐶𝐼𝑏𝑓𝑔 + 𝐶 × 𝑃𝐶𝐼𝑛𝑔 “ 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 = 𝐹𝐿𝑂𝑊𝑐𝑜𝑔 + 𝐹𝐿𝑂𝑊𝑏𝑓𝑔 + 𝐹𝐿𝑂𝑊𝑛𝑔 → → 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 = 𝐴 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 + 𝐵 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 + 𝐶 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → → 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 = 𝐴 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 + 𝐵 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 + 𝐶 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → 1 = 𝐴 + 𝐵 + 𝐶 → “ 𝐴 + 𝐵 + 𝐶 = 1 "
GAS MIX STATION for REHEATING FURNACE in Steel Plants ● Ideal Condition “ COG + BFG “ 𝐿𝐻𝑉𝑚𝑖𝑥 = 𝐴 × 𝐿𝐻𝑉𝑐𝑜𝑔 + 𝐵 × 𝐿𝐻𝑉𝑏𝑓𝑔 𝐴 + 𝐵 = 1 𝐴 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐵 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑐𝑜𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐿𝐻𝑉𝑐𝑜𝑔 " 𝐿𝐻𝑉𝑚𝑖𝑥 = 0,43662 × 𝐿𝐻𝑉𝑐𝑜𝑔 + 0,56338 × 𝐿𝐻𝑉𝑏𝑓𝑔 "
GAS MIX STATION for REHEATING FURNACE in Steel Plants ● Normal Condition “ COG + BFG + NG “ 𝐿𝐻𝑉𝑚𝑖𝑥 = 𝐴 × 𝐿𝐻𝑉𝑐𝑜𝑔 + 𝐵 × 𝐿𝐻𝑉𝑏𝑓𝑔 + 𝐶 × 𝐿𝐻𝑉𝑛𝑔 𝐴 + 𝐵 + 𝐶 = 1 Natural Gas fixed 𝐴 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐶 × 𝐿𝐻𝑉𝑛𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐵 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑐𝑜𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐶 × 𝐿𝐻𝑉𝑛𝑔 − 𝐿𝐻𝑉𝑐𝑜𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐿𝐻𝑉𝑐𝑜𝑔 COG fixed 𝐵 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑛𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐴 × 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑛𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐶 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝑃𝐶𝐼𝑛𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝑃𝐶𝐼𝑛𝑔 − 𝐴 × 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑛𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐿𝐻𝑉𝑛𝑔
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
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 %
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 %
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
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

More Related Content

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 “
  • 3. GAS MIX STATION for REHEATING FURNACE in Steel Plants 𝑃𝑂𝑊𝐸𝑅𝑡ℎ𝑒𝑟𝑚𝑎𝑙 = 𝐿𝑂𝑊𝐻𝐸𝐴𝑇𝑉𝐴𝐿𝑈𝐸𝑔𝑎𝑠 × 𝐹𝐿𝑂𝑊𝑔𝑎𝑠 [ Kcal/h ] = [ Kcal / m3 ] x [ m3/h ] 𝐴 = 𝐹𝐿𝑂𝑊𝑐𝑜𝑔 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → 𝐹𝐿𝑂𝑊𝑐𝑜𝑔 = 𝐴 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐵 = 𝐹𝐿𝑂𝑊𝑏𝑓𝑔 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → 𝐹𝐿𝑂𝑊𝑏𝑓𝑔 = 𝐵 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐶 = 𝐹𝐿𝑂𝑊𝑛𝑔 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → 𝐹𝐿𝑂𝑊𝑛𝑔 = 𝐶 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝑄𝑚𝑖𝑥 = 𝑄𝑐𝑜𝑔 + 𝑄𝑏𝑓𝑔 + 𝑄𝑛𝑔 → [ m3/h ] = [ m3/h ] + [ m3/h ] + [ m3/h ] → 𝐿𝐻𝑉𝑚𝑖𝑥 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 = 𝐿𝐻𝑉𝑐𝑜𝑔 × 𝐹𝐿𝑂𝑊𝑐𝑜𝑔 + 𝐿𝐻𝑉𝑏𝑓𝑔 × 𝐹𝐿𝑂𝑊𝑏𝑓𝑔 + 𝐿𝐻𝑉𝑛𝑔 × 𝐹𝐿𝑂𝑊𝑛𝑔 → → 𝑃𝐶𝐼𝑔𝑎𝑠 × 𝑄𝑔𝑎𝑠 𝑄𝑔𝑎𝑠 = 𝑃𝐶𝐼𝑐𝑜𝑔 × 𝑄𝑐𝑜𝑔 𝑄𝑔𝑎𝑠 + 𝑃𝐶𝐼𝑏𝑓𝑔 × 𝑄𝑏𝑓𝑔 𝑄𝑔𝑎𝑠 + 𝑃𝐶𝐼𝑛𝑔 × 𝑄𝑛𝑔 𝑄𝑔𝑎𝑠 → → 𝑃𝐶𝐼𝑔𝑎𝑠 = 𝑃𝐶𝐼𝑐𝑜𝑔 × 𝐴 + 𝑃𝐶𝐼𝑏𝑓𝑔 × 𝐵 + 𝑃𝐶𝐼𝑛𝑔 × 𝐶 → " 𝑃𝐶𝐼𝑔𝑎𝑠 = 𝐴 × 𝑃𝐶𝐼𝑐𝑜𝑔 + 𝐵 × 𝑃𝐶𝐼𝑏𝑓𝑔 + 𝐶 × 𝑃𝐶𝐼𝑛𝑔 “ 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 = 𝐹𝐿𝑂𝑊𝑐𝑜𝑔 + 𝐹𝐿𝑂𝑊𝑏𝑓𝑔 + 𝐹𝐿𝑂𝑊𝑛𝑔 → → 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 = 𝐴 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 + 𝐵 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 + 𝐶 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → → 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 = 𝐴 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 + 𝐵 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 + 𝐶 × 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 𝐹𝐿𝑂𝑊𝑚𝑖𝑥 → 1 = 𝐴 + 𝐵 + 𝐶 → “ 𝐴 + 𝐵 + 𝐶 = 1 "
  • 4. GAS MIX STATION for REHEATING FURNACE in Steel Plants ● Ideal Condition “ COG + BFG “ 𝐿𝐻𝑉𝑚𝑖𝑥 = 𝐴 × 𝐿𝐻𝑉𝑐𝑜𝑔 + 𝐵 × 𝐿𝐻𝑉𝑏𝑓𝑔 𝐴 + 𝐵 = 1 𝐴 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐵 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑐𝑜𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐿𝐻𝑉𝑐𝑜𝑔 " 𝐿𝐻𝑉𝑚𝑖𝑥 = 0,43662 × 𝐿𝐻𝑉𝑐𝑜𝑔 + 0,56338 × 𝐿𝐻𝑉𝑏𝑓𝑔 "
  • 5. GAS MIX STATION for REHEATING FURNACE in Steel Plants ● Normal Condition “ COG + BFG + NG “ 𝐿𝐻𝑉𝑚𝑖𝑥 = 𝐴 × 𝐿𝐻𝑉𝑐𝑜𝑔 + 𝐵 × 𝐿𝐻𝑉𝑏𝑓𝑔 + 𝐶 × 𝐿𝐻𝑉𝑛𝑔 𝐴 + 𝐵 + 𝐶 = 1 Natural Gas fixed 𝐴 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐶 × 𝐿𝐻𝑉𝑛𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐵 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑐𝑜𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐶 × 𝐿𝐻𝑉𝑛𝑔 − 𝐿𝐻𝑉𝑐𝑜𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐿𝐻𝑉𝑐𝑜𝑔 COG fixed 𝐵 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑛𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐴 × 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐿𝐻𝑉𝑛𝑔 − 𝐿𝐻𝑉𝑏𝑓𝑔 𝐶 = 𝐿𝐻𝑉𝑚𝑖𝑥 − 𝑃𝐶𝐼𝑛𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝑃𝐶𝐼𝑛𝑔 − 𝐴 × 𝐿𝐻𝑉𝑐𝑜𝑔 − 𝐿𝐻𝑉𝑛𝑔 𝐿𝐻𝑉𝑏𝑓𝑔 − 𝐿𝐻𝑉𝑛𝑔
  • 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