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Current Challenges and Opportunities in IGCC Design



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Current Challenges Opportunities in IGCC Design Joint US China Workshop on IGCC CoProduction CCS Harvard Kennedy School April 16 17 2009 Neville Holt Technical Fellow EPRI IGCC Design Challenges Opportunities Better Availability Lower Capital Cost Higher Efficiency Reduction of Power and Efficiency loss when incorporating CCS Clarification of Design Basis and Emission rules for CCS 2009 Electric Power Research Institute Inc All rights reserved 2 IGCC Design Challenges Opportunities Better availability Improved refractory and injector life Gas turbine availability shorter start ups Lower Capital Cost Larger gasifiers and gas turbines provide economies of scale 50 Hz GT 40 larger than 60 Hz China is 50 Hz US 60 Hz Lower cost ASU e g ITM Lower auxiliary power usage Higher Efficiency Higher firing temperature gas turbines Lower auxiliary power usage GT air extraction Separation process for CO2 at higher pressure Advanced cycles 2009 Electric Power Research Institute Inc All rights reserved 3 Gas Turbine Current Status Planned and Future Improvements GT Manufacturer OEM Current IGCC Application Planned or Commercially Offered Future Improvements GE 7 E CoolWater 7 FA Wabash Tampa 9 E Saras 6 FA Valero 7 FB Duke 9 FA 9 FB Hatfield Hydrogen firing without derate G or H Siemens 6 3000 E Dow V 94 2 Nuon V 94 2K ISAB V 94 3 Elcogas 5 5000 F 6 4000 F V 94 2K GreenGen Hydrogen firing without derate G or H MHI M 701D Nakoso M 701F4 Negishi M 701 F4 Nuon M 701G M 501 F M 501 G M 701 J 2011 M 501 J 2009 Electric Power Research Institute Inc All rights reserved 4 Gas Turbine Challenges in IGCC Application To date F GTs have lower availability than earlier E types China IGCC Phase 1 demonstration plants currently plan E type GTs Need to move to higher efficiency and larger size 50 Hz GTs and incorporate CCS GE 7 FB 60 Hz to be demonstrated in IGCC at Duke Edwardsport 2012 Siemens 6 5000 F and 5 4000 F yet to be demonstrated in IGCC Both GE Siemens need IGCC demonstration of F class



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