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Gasification and IGCC Presentation) | Gasification | Coal

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Gasification & IGCC – Design Issues & Opportunities Neville Holt – Technical Fellow, EPRI Presented at the GCEP Advanced Coal Workshop Provo, Utah March 15-16, 2005 Options for CO2 Response (The Stabilization Wedge & Slices) ã Conservation (Yes - but Rest of the World?) ã Renewables (Yes - but not enough) ã Nuclear (Ultimately Yes – but implies wide Proliferation) ã Adaptation (Probably Yes – we always do) ã Switch from Coal to Natural Gas (Maybe but not enough NG) ã CO2 Capture and Sequestra
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  Gasification & IGCC –Design Issues & Opportunities Neville Holt –Technical Fellow, EPRIPresented at theGCEP Advanced Coal WorkshopProvo, UtahMarch 15-16, 2005  2 GCEP Advanced Coal WS March 15-16, 2005-Copyright ©2004 Electric Power Research Institute, Inc. All rights reserved. Options for CO 2 Response(The Stabilization Wedge & Slices) ãConservation (Yes -but Rest of the World?)ãRenewables (Yes -but not enough)ãNuclear (Ultimately Yes –but implies wide Proliferation)ãAdaptation (Probably Yes –we always do)ãSwitch from Coal to Natural Gas (Maybe but not enough NG)ãCO 2 Capture and Sequestration –CCS (Maybe but site specific & costly )Notes :US Coal Power Plants emit > 2 billion metric tons of CO 2  /yr(~31% of US and 8% of World CO 2 emissions).1 billion metric tons/yr = ~25 million bpd of supercritical CO 2 Effort Required for CCS Slice-World-wide build or replace 8 GW of CoalPower plants with CCS every year and maintain them until 2054  3 GCEP Advanced Coal WS March 15-16, 2005-Copyright ©2004 Electric Power Research Institute, Inc. All rights reserved. O 2 N 2 AirBFWFresh boilerFeedwater(BFW ) SteamSteamTurbineHRSGCoalPrepGas CoolingGasificationSulfurRemovalAirSeparationUnitGasTurbineAir IGCC Block Flow Diagram (State-of-the Art)  4 GCEP Advanced Coal WS March 15-16, 2005-Copyright ©2004 Electric Power Research Institute, Inc. All rights reserved. IGCC with CO 2 Removal andHydrogen Co-Production O 2 N 2 AirBFWBFWSteamSteamTurbineHRSGCoalPrepGas CoolingC + H 2 O =CO + H 2 GasificationSulfur andCO 2 RemovalAirSeparationUnitGasTurbineAirHydrogenCO 2 to use or sequestration SulfurShiftCO+ H 2 O =CO 2 + H 2
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