INTERGRATED GASIFICATION COMBINED CYCLE (IGCC)

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INTERGRATED GASIFICATION COMBINED CYCLE (IGCC)
CHE 384 ENERGY TECHNOLOGY POLICY

• ANH PHUONG NGUYEN
• APN274
• 25 Nov 2008

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Content

• Overview
• IGCC Process
• Future development
• Conclusions

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Overview
INTEGRATED GASIFICATION COMBINED CYCLE
COMBINED CYCLE
GASIFICATION PRODUCE SYNGAS
POWER GENERATION
LOW EMISSION
HIGH EFFICIENCY
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IGCC Plants in the US
The Wabash River IGCC Project West Terre Haute,
Indiana, 1995 Using The ConocoPhillips E-Gas
Gasification process Output 262 MWe
The Tampa Electric IGCC Project Mulberry,
Florida, 1996 Using GE Energy Gasification
Output 250 MWe
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IGCC PROCESS
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GASIFIER TYPES
Manufacturer Gasifier type Application
ConocoPhillips Coal- water slurry feed, Oxygen blown, refractory lined gasifier wide range of coal
General Electric Energy (GE) Coal-water slurry feed, O2 blown, refractory lined gasifier bituminous coal, pet- coke or blend of pet coke with low rank coal
Kellog Brown and Root (KBR) dry feed, air blown transport reactor low rank coal
Mitsubishi Heavy Industry (MHI) dry feed, air blown low rank coal
Shell dry feed, coal is crushed, dried and fed into gasifier, oxygen blown, waterwall in gasifier wide variety of feedstock
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Kellog Brown and Root (KBR)
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COMPARISON
IGCC (ConocoPhilips) IGCC (ConocoPhilips) PC subcritical PC subcritical PC supercritical PC supercritical NGCC NGCC
CO2 capture No Yes No Yes No Yes No Yes
Net power output (kWe) 623,370 518,240 550,445 549,613 550,150 545,995 560,360 481,890
HHV efficiency () 39.3 31.7 36.8 24.9 39.1 27.2 50.8 43.7
Levelized cost of electricity (/MWh) 75.3 105.7 64 118.8 63.3 114.8 68.4 97.4
Total plant cost (Million ) 1080 1259.8 852.6 1591.3 866.391 1567.073 310.710 564.628
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IGCC COST BREAKDOWN
Unit Cost ()
Coal sorbent handling 34,000
Coal sorbent preparation and feed 52,665
Feed water system 34,944
Gasifier system total - Gasifier, syngas cooler auxiliaries - Air Separation Unit O2 compression - Other gasifier units 446,129 212,885 170,449 62,795
Gas cleanup and piping 228,370
CO2 removal system 35,754
Combustion turbine 123,611
Steam turbine 56,611
Cooling water system 24,614
Aspen, sorbent handling system 35,031
Accessory electric plant 73,409
Instrumentation control 25,021
Building and structure 16,429
Total 1,259,800
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FUTURE DEVELOPMENT

• Improve gasifier performance
• Improve gas turbine efficiency
• Improve the heat exchanger system
• Reducing cost of air separation unit or switch to
  air blown process as Japan did
• Optimize energy saving in IGCC
• Improve control of the integrated system

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CONCLUSION

• Promising technology in early development
• Substitute for current coal fired power plant
• Need more RD to make it more competitive
• Prospect of zero emission from coal

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QA