INTERGRATED GASIFICATION COMBINED CYCLE (IGCC)

ANH PHUONG NGUYENAPN274

25 Nov 2008

CHE 384 ENERGY TECHNOLOGY & POLICY

Content

OverviewIGCC ProcessFuture development Conclusions

Overview

COMBINED CYCLEGASIFICATION

PRODUCE SYNGAS

INTEGRATED GASIFICATION COMBINED CYCLE

POWER GENERATION

LOW EMISSION HIGH EFFICIENCY

IGCC Plants in the US

The Tampa Electric IGCC ProjectMulberry, Florida, 1996

Using: GE Energy Gasification Output: 250 MWe

The Wabash River IGCC ProjectWest Terre Haute, Indiana, 1995Using: The ConocoPhillips E-Gas

Gasification process Output: 262 MWe

IGCC PROCESS

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

Kellog Brown and Root (KBR)

COMPARISON

IGCC (ConocoPhilips)

PC subcritical PC supercritical NGCC

CO2

captureNo 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

IGCC COST BREAKDOWNUnit 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

446,129212,885170,44962,795

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

FUTURE DEVELOPMENT

Improve gasifier performanceImprove gas turbine efficiencyImprove the heat exchanger systemReducing cost of air separation unit or switch

to air blown process as Japan didOptimize energy saving in IGCCImprove control of the integrated system

CONCLUSION

Promising technology in early development Substitute for current coal fired power plantNeed more R&D to make it more competitive Prospect of zero emission from coal

Q&A