Recent Trends in Heat Recovery Cokemaking Processes - ABM
Recent Trends in Heat Recovery Cokemaking Processes - ABM Recent Trends in Heat Recovery Cokemaking Processes - ABM
Iron Production: Coke Minimization • Coke is the 2 nd highest cost consumable in Steel production – ~25% of the total cost – Iron highest at ~40% of total cost • Blast furnace competitiveness depends on lowering coke use • Steel Industry focused on lowering coke use for the last 50 years by advances in practices and technology September 2011 SunCoke Energy 4
Reduction Blast Furnace Reducing Agent Consumption Impact of Technology over the last 50 years: • Reducing Agents lowered by over 50% • Coke use lowered by over 65% September 2011 consumption of reductants kg/thm 1100 1000 900 800 700 600 500 400 300 200 100 0 Ore beneficiation Input of overseas rich ores Blast temperature > 1200C O2 enrichment Top pressure Burden distribution 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 year Gas flow control Improvement of Fe burden ~30% Improvement of coke Source: Sponge Iron Production - Chatterjee Small coke in Fe burden 104 33 345 coal oil + others coke 482 SunCoke Energy 5
- Page 1 and 2: Recent Trends in Heat Recovery Coke
- Page 3: Iron Production: Coke Usage Septemb
- Page 7 and 8: Alternate Reductants for Coke Repla
- Page 9 and 10: Sun Coke Process Flow Diagram SunCo
- Page 11 and 12: Horizontal Non-Heat Recovery - Deve
- Page 13 and 14: SunCoke Energy History since 2000 -
- Page 15 and 16: Most recent project - Middletown, O
- Page 17 and 18: Last 5-Year Technology Advancements
- Page 19 and 20: Typical SunCoke Energy Battery •
- Page 21 and 22: Heat Recovery Oven Flexibility Hypo
- Page 23 and 24: Factors Favoring Heat Recovery Plan
- Page 25 and 26: SCE Horizontal HR Coke Plant Improv
- Page 27 and 28: Coke Yield Improvements • Current
- Page 29 and 30: Coal/Coke Chemistry and Blend Model
- Page 31 and 32: Computational Fluid Dynamics (CFD)
- Page 33 and 34: Next Generation Environmental Contr
- Page 35: Summary • SunCoke Energy has adva
Reduction Blast Furnace Reduc<strong>in</strong>g Agent Consumption<br />
Impact of Technology over the last 50 years:<br />
• Reduc<strong>in</strong>g Agents lowered by over 50%<br />
• Coke use lowered by over 65%<br />
September 2011<br />
consumption of reductants kg/thm<br />
1100<br />
1000<br />
900<br />
800<br />
700<br />
600<br />
500<br />
400<br />
300<br />
200<br />
100<br />
0<br />
Ore beneficiation<br />
Input of overseas rich ores<br />
Blast temperature > 1200C<br />
O2 enrichment<br />
Top pressure<br />
Burden distribution<br />
1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005<br />
year<br />
Gas flow control<br />
Improvement of Fe burden<br />
~30%<br />
Improvement of coke<br />
Source: Sponge Iron Production - Chatterjee<br />
Small coke <strong>in</strong> Fe burden<br />
104<br />
33<br />
345<br />
coal<br />
oil + others<br />
coke<br />
482<br />
SunCoke Energy<br />
5
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