THE WABASH RIVER IGCC PROJECT REPOWERING COAL FIRED POWER PLANTS

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1 THE WABASH RIVER IGCC PROJECT REPOWERING COAL FIRED POWER PLANTS PHIL AMICK VICE PRESIDENT, COMMERCIAL DEVELOPMENT GLOBAL ENERGY, INC. 1

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3 Our company: Project Developer for Gasification Facilities Environmentally Driven A Founder of Gasification Technologies Council Develop, Build, Own & Operate Strategy Two Technologies British Gas Lurgi (BGL) E-Gas (Dow / Destec Gasification Process) 3

4 E-GAS GASIFICATION PROCESS HERITAGE DOW Developed Technology, Proto Plants & LGTI Spun off from Dow in 1989, 80% Dow Ownership Wabash River NGC Corporation Purchased Destec from Dow in June 1997 NGC changed its name to Dynegy in June

5 TECHNOLOGY COMPARISON E-Gas Destec BGL Type Entrained Flow Fixed Bed Slagging Slagging Slurry Fed, O2 Dry Feed, O2 Feedstocks Tested Coal, Lignite Coal, Pet Coke Pet Coke AFT Fuel Briquette w/ biomass, sludge Module Size 120/250/500 MW 120/400 MW Products Power, Steam, H2 Power, Gas Chemical Feedstock Transportation Fuel 5

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7 E-GAS GASIFIER 7

8 EGAS TECHNOLOGY HISTORY PILOT PLANT 36 TPD 1975 PROTO TPD 1979 PROTO TPD 1983 LGTI 2400 TPD 1987 WABASH 2550 TPD

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10 Wabash River Project Overview E- Gas Technology Gasification Process Coal Gasification Combined Cycle Repowering Operational since MWe Net Output Bituminous Coal and Petcoke, up to 7 % S Cleanest Coal/Coke Fired Power Plant in the World Greatest Petcoke Throughput Demonstrated in Single Gasifier 10

11 Wabash River Project Overview E- Gas Technology Gasification Process Oxygen Blown, Slurry Fed Continuous Slag Removal ( No lock hoppers) High Temperature Heat Recovery (~ 1000 DegC) Medium Temperature Char Filtration (~ 450 DegC) Metallic Elements, Dry Filtration COS Catalyst, MDEA Acid Gas Removal Claus based Sulfur Recovery Recycle of SRU Tailgas and Char to gasifier General Electric 7FA Gas Turbine, Dual Fuel (Oil/Syngas) 11

12 WABASH REPOWERING ASU Water Treatment GT HRSG Switch Yard STG & Aux Fuel Handling Slurry Prep Gasifier HTHR Sulfur Removal Filtration Slag / Frit Handling Sulfur Recovery Existing 12

13 WABASH RIVER ENERGY LTD. 13

14 WABASH RIVER ENERGY LTD. 14

15 PROJECT SITE Repowering Unit 1 (90 MW) of Six Unit 888 MW PC plant Approximately 40 Acres on existing powerplant and coal mine property Site located on reclaimed mine entrance area Viking and Saxton coal mines (abandoned) underly the site Nearest residence one half mile away (nearer existing plant) 15

16 WABASH RIVER PROJECT SCHEDULE MILESTONES Proposal for Clean Coal IV DOE Selection IURC Approval ENVIRONMENTAL PERMITS Environmental Information Vol NEPA Process MAJOR EQUIPMENT FABRICATION CONSTRUCTION START-UP 16

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18 AIR EMISSION POINTS Gas Turbine/HRSG Stack 225 Ft. Elevation Auxiliary Boiler Stack 50 Ft. Tail Gas Incinerator Stack 310 Ft. Flare 180 Ft. Cooling Tower 30 Ft. 18

19 GTC Gasification Workshop for Environmental Regulators 19

20 EMISSIONS COMPARISON Emissions, lb/mwh SO2 NO x CO PM-10 VOC Unit 1 before Repower IGCC nil

21 SO x Control IGCC is permitted for 0.25 lb SO2/MMBtu (split between GT and TGI stacks) Sour syngas goes through a COS catalyst and then an amine based acid gas removal stage. Normally running at 0.10 lb SO2/MMBtu As low as 0.03 lb SO2/MMBtu has been achieved 21

22 SO 2 EMISSIONS 4.5 LBS. SO2 / MMBtu of Coal Feed Existing 1953 Station New Source Performance Standards Wabash 22

23 NO x Control GE 7FA combustion turbine with steam injection (1992 purchase order) Guaranteed for 25 ppm NO x Has run as low as 18 ppm 23

24 NOX EMISSIONS LBS. NOX / MMBtu of Coal Feed EXISTING IGCC 24

25 PARTICULATE EMISSIONS NONE MEASURABLE IN HRSG STACK ZERO OPACITY 25

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27 Steam Turbine Condenser Ash Pond Outfall 002 Power Block New WW Pond Gasification Island, ASU, CWT Old Power Plant Metering Point 27

28 WATER BALANCE NEW USERS Cooling Tower BD mgd Flushes & Purges Unrecycled slurry water Demineralizer Rinse Steam Losses Filter Backwash Clarifier Sludge Coal Pile Runoff Boiler Blowdown Domestic Sewage

29 WATER BALANCE OUTFALL 002 Added Discharge from new project 0.72 mgd Savings from PC Boiler Decommissioning (0.57) Net Increase to Outfall mgd ( 2.8 % increase for overall station) 29

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31 Slag Black, glassy sandlike material Inert, passes TCLP Generally 3-10% Carbon Marketed for asphalt, construction backfill, roofing shingle applications Production is proportional to ash & flux content in feed Sulfur Produced as 99.99% pure elemental sulfur Leaves plant in railcars Sold to Broker for agricultural applications, over 40,000 tons to date 31

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33 SYNGAS FACILITY OPERATING STATISTICS Time Period On Coal (Hrs) Coal/Coke Processed (Tons) On Spec. Gas (MMBtu) Steam Produced (Mlbs) Product Syngas Availability (%) , ,495 8,844,902 2,190, , ,862 5,813,151 1,480, , ,630 6,430,446 1,082, Overall 11/18/ /31/ ,260 1,936,191 30,321,513 8,010, % Annual output constrained by 100 day combustion turbine outage Reflects restructuring (no contract and no sales for three months) 33

34 Syngas Production 10 9 Trillion Btu of Syngas Produ Adjusted 2000 Adjusted 34

35 Syngas Availability Availability of Syngas Deliver

36 E-GAS PETCOKE CAPABILTY DEVELOPMENT PROGRAM Gasifier Second Stage at LGTI ~ 1990 Wabash River ,000 tons from Midwest Refinery Wabash River ,000 tons from Gulf Coast Refinery 2000 & Over 1,000,000 tons from another Midwest Refinery 36

37 Petroleum Coke Test Results & 1999 Demonstrated plant efficiency, 40.2% (HHV) Produced 100% rated output at normal environmental standards 99% Carbon Conversion No slag tapping problems Nickel (80%) and Vanadium (99%) were captured in slag, nonleaching No negative impact on equipment Refractory wear rates similar to coal operations 37

38 ANALYSIS FEEDSTOCK SPECIFICATIONS TYPICAL PETROLEUM COKE COAL M oisture, % Ash, % Volatile, % Fixed Carbon, % Sulfur, % Metals in Fuel : Ni, ppm, dry basis Trace V, ppm, dry basis Trace Heating Value, as rec d, Btu/lb 10,536 14,282 13,380 14,026 38

39 PRODUCT SYNGAS ANALYSIS Typical Coal Petroleum Coke N2, % Ar, % CO2, % CO, % H2 % CH4, % Total S, ppmv HHV, Btu/Scf

40 Performance Variable Typical Coal Petroleum Coke Test #1 SO2 Emission, lbs/mmbtu <0.1 <0.1 <0.1 Sulfur Removal Eff., % >99 >99 >99 Carbon in Slag, % <5 <10 <5 Carbon Conversion, % >99 >99 >99 Cold Gas Efficiency, % Petroleum Coke Test #2 Projected Heat Rate, HHV, Btu/kWh (est.) Table 3: Petroleum Coke Performance Summary 40

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