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Welcome Safety tip for the day SAFETY FIRST TAMPA ELECTRIC GENERATION BIG BEND STATION 1900 MW 4 Coal fired steam units BAYSIDE POWER STATION 1800 MW Repowered NGCC One 3 on 1 One 4 on 1 POLK POWER STATION 650 MW One IGCC Two Peaking CT’s

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tampa electric generation
TAMPA ELECTRIC GENERATION
  • BIG BEND STATION 1900 MW
  • 4 Coal fired steam units
  • BAYSIDE POWER STATION 1800 MW
  • Repowered NGCC
  • One 3 on 1
  • One 4 on 1
  • POLK POWER STATION 650 MW
  • One IGCC
  • Two Peaking CT’s
  • PHILLIPS POWER STATION 36 MW
  • Two slow speed diesels ________
  • TOTAL CAPACITY (approx) 4400 MW
polk power station
POLK POWER STATION
  • UNIT 1 IGCC, Base load on syngas, intermediate on oil
  • Combined cycle, GE 7F, 7221 192MW
  • GE D11, steam 120MW
  • Dual fuel, Syngas/Distillate Oil
  • DOE Clean Coal Technology co-funding $120M
  • In service 1996
  • UNIT 2, 3, 4 & 5 Simple Cycle CT, Peaking
    • Simple cycle GE 7FA+E, 7241 165 MW each
    • 2 & 3 Dual fuel, Nat gas/Distillate Oil; 4 & 5 Nat Gas only
    • Unit 2 in service 2000, Unit 3 2002, Units 4&5 2007
  • Total site over 4000 acres (previously mined for phosphate)
    • 750 acre cooling pond
    • 80 Tampa Electric employees
polk 1 technology summary
POLK 1 – Technology Summary
  • Gasification technology originally developed by Texaco, now owned by General Electric
  • Oxygen blown, slurry fed, entrained flow gasifier
  • Operating pressure 400 psi nominal
  • Gasifier vessel refractory lined (largest built)
  • Radiant plus convective syngas coolers for heat recovery
  • Single train configuration (one gasifier supplying one CT)
  • CT is GE 7F w/ MNQC combusters, larger 1st stage nozzle
  • Diluent N2 plus syngas saturation for NOx control
  • Modest air extraction rate from CT to ASU
  • Feedstock is 2200 tons/day coal and petroleum coke blend
  • ASU by Air Products, 2100 tons/day oxygen production
  • Sulfuric acid plant by Monsanto, (unique to Florida)
  • Acid gas removal via MDEA and COS hydrolysis
aerial photo

SULFURIC ACID PLANT

OXYGEN PLANT

GASIFIER STRUCTURE

COAL SILOS

SLURRY PREPARATION

UNIT 1 CT

STEAM TURBINE

UNIT 2 CT

HRSG

YOU ARE HERE

UNIT 3 CT

UNDER CONSTRUCTION

CONTROL

ADMINISTRATION

AERIAL PHOTO

N

,

igcc driver
IGCC DRIVER

LOW EMISSIONS

FROM LOW COST FEEDSTOCKS

FOR

LOW COST ELECTRICITY

slide9

POLK 1 PERFORMANCE

ENVIRONMENTAL

  • Polk rated the “Cleanest Coal Fired Power Plant in North America” by the Energy Probe Research Foundation
  • (total emissions from 2002 TRI data)
slide10

LOW EMISSIONS

Typical Emissions (Lb/MMBTU)

PolkPolk Expected

(Permit) (Steady State) New IGCC

SO2 0.14 0.12 0.02

NOx 0.055 0.04 0.02 (w/SCR)

Particulate 0.007 <0.004 0.007

Mercury NA NA 90% removal

(New IGCC values are basis 8,800 hhv btu/kwh net)

other environmental advantages
OTHER ENVIRONMENTAL ADVANTAGES
  • Beneficial Reuse of Sulfur – H2SO4 at Polk
  • Beneficial Reuse of Slag
  • Low Water Use (2/3 that of PC unit)
  • Minimal solid waste (no gypsum from FGD)
  • Zero Process Water Discharge
slide12

ENVIRONMENTAL OPPORTUNITIES

  • Mercury - Cost-Effective Removal on IGCC using small activated carbon bed
  • ( $0.25/MWh vs. $3.10/MWh for PC)
    • Testing done at Polk
    • Commercially at Eastman to 95+%
  • Other Volatile Metals – Will also be removed by carbon bed
slide13

ENVIRONMENTAL OPPORTUNITIES

CO2 Removal

Solvents used for sulfur removal can also remove CO2 (more cost effective due to <1% volume)

For New Solid Fuel Power Plants (EPRI estimates)

25% Higher COE with IGCC

50% + Higher COE with PC

CO2 Sequestration

Saline aquifer injection – USF feasibility study

slide14

FUEL FLEXIBILITY

  • Polk has operated on over 20 different fuels including: Coals Coal Blends Coal/Pet Coke Blends
  • Coal/Coke/Biomass Blends
  • Slagging gasifier requires somewhat higher fusion temps (Polk targets 2350 – 2700 F T-250 temps)
  • Low rank fuels can be used in slurry fed gasifiers, but hurt efficiency
  • Power block can operate on syngas or distillate oil
relative fuel prices at polk

LOW COST FEEDSTOCKS

RELATIVE FUEL PRICES AT POLK
  • 40% Coal/60% Pet Coke Blend 1.0
  • Pet Coke 0.7
  • Coal 1.5
  • Natural Gas 3.6
  • Low Sulfur Oil 6.0
slide16

RENEWABLE FUELS

  • BIOMASS CO-UTILIZATION TESTS
  • Eucalyptus Biomass Test - December, 2001
  • Bahiagrass Biomass Test - April, 2004 (Bahiagrass Harvest and Storage Test started approximately one year prior)
  • No impact on syngas quality or emissions
  • Minor issues with material handling
slide17

REPRESENTATIVE COSTS

Fuel processing costs per mmbtu fuel input

(Excludes combined cycle costs)

Fuel $1.62O&M $0.96

“Controllable Expense” $2.58

A&G, Depreciation, Taxes, etc $1.06

Solid Fuel Processing Cost $3.64

For Natural Gas Comparison,

Multiply by heat rate ratio:

$3.64 X 9,500 / 7,000 = $4.93

Current Natural Gas Price: $8.00 +/-

slide19

TEC’s ADVANCMENTS of IGCC

  • Refractory life extension to 3 years
  • Successful integration of fines recycle
  • NOx below 15ppm with diluent N2 and saturation
  • Successful zero process water discharge system
  • Air extraction/integration with GE 7F turbine
  • IGCC use with sulfuric acid plant with variable %
  • Leader in clean coal power production > 13M gwhrs
  • IGCC ambassadors, 4000+ visitors
slide20

PERCEPTIONS AND MISPERCEPTIONS

REGARDING IGCC

  • HIGHER INSTALLED COST – TRUE
  • Current estimates are 10 – 20% higher than SCPC unit with scrubber and
  • SCR. This is offset by lower fuel cost and reduced emissions.
  • NO SINGLE SUPPLIER OR OVERALL PERFORMANCE GUARANTEE – NO LONGER TRUE
  • Alliances GE/Bechtel and Conoco/Phillips-Fluor are offering comprehensive
  • EPC contracts with performance guarantees.
  • NO FINANCIAL REWARD FOR SUPERIOR ENVIRONMENTAL PERFORMANCE – SOMEWHAT TRUE
  • IGCC is capable of lower emissions than other coal based technologies and
  • will be the most cost effective at mercury and CO2 removal. Anticipated
  • environmental regulations will define financial value.
slide21

PERCEPTIONS AND MISPERCEPTIONS

REGARDING IGCC (cont’d)

  • IGCC HAS LOW AVAILABILITY – NOT TRUE
  • Overall reliability of the power block is higher than other “coal-fired” units
  • (95%). The dual fuel capability of IGCC adds significant value. Gasifier
  • reliability (currently low 80%), will be higher for next generation, dual train
  • plants.
  • IGCC IS EXPERIMENTAL AND REQUIRES UNIQUE SKILLS
  • – NOT TRUE
  • Gasification has been used since the 1800’s and there are hundreds of gasifiers
  • operating worldwide. The first generation IGCC plants have now been in
  • service for 10 years.
  • Tampa Electric (a modest size electric utility) has successfully operated and
  • maintained the Polk Unit 1 IGCC since 1996.
slide22

POLK UNIT 6

  • TEC is planning for the addition of a 630 MW IGCC
  • unit in 2013.
  • Preliminary engineering and preparations for
  • permitting and regulatory approval are in progress.
  • TEC has been awarded a $133.5M tax credit under
  • the Energy Policy Act of 2005 for Polk 6.
  • Expected configuration is two gasifiers feeding two
  • CT’s with one ST. Minimum scale up (same size
  • gasifiers as Polk 1).
  • Allowances made in design for addition of CO2
  • capture and sequestration equipment.