sofa burners
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Mirant Mid-Atlantic
MWAQC Technical Advisory Committee Briefing
January 21, 2005
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Discussion Topics
NOx Settlement
Progress Report on Current Projects
View on Multipollutant Legislation
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NOx Settlement
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Key Elementsof Mid-Atlantic Global NOx Settlement
Control Technology to be Installed
Potomac River 3,4,5
Low NOx Burners in 2004, SOFA in 2005
Morgantown 1,2SCRs in 2007, 2008
Declining NOx Tonnage Caps from 2004 through 2010 Ozone Season Capsfor Potomac River and System
Annual Caps
for System
Emissions Rate Limits Ozone Season System limit of 0.150 lb/MBtu starting in 2008
Morgantown SCRs limit of 0.100 year-round, once installed
Penalty and Projects Cash payment of $500,000
Supplemental Projects totaling $1.0 M to reduce dust and particulate matteremissions at the site
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Terms of SettlementNOx Caps & Trading Provisions
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5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
2004 2005 2006 2007 2008 2009 2010
Year
Ozone Season Cap Annual Cap
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Environmental Projects
PROJECT Est. PM Reduction Ash Silo Vent Secondary Filters 30 tons
Truck Wash Facility 13.7 tons
Coal Pile Fencing 2.8 tons
Coal Pile Binding Agent 800 lbs
Ash Unloader Replacement 200 lbs
Truck Loading Dust Suppression 200 lbs
Railcar Unloading Dust Suppression 200 lbs Settled Dust Study
Contribution to Clean Air Partners
TOTAL Cost = $1,000,000
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Annual System NOx Reductions
Mid-Atlantic System Annual NOx Emissions
0
10000
20000
30000
40000
50000
60000
70000
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Year
A
nnualNOxEmissions
73% Reduction thru 2010
35% Reduction from 1999
Absolute NOx Limits
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Summer NOx Reductions
Potomac River Summer NOx Emissions
1000
1500
2000
2500
3000
3500
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Year
OzoneSeasonNOx
36% Reduction since 1999
55% Reduction thru 2010
Absolute NOx Limits
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Benefits of Settlement
Resolves Potomac River NOV
Achieves 0.15 lb/MBtu system NOx average by 2008
Year-round SCR operation will reduce PM2.5 emissions
Emission caps ensure environmental benefit whileallowing flexibility over methods to reach compliancetargets
When paired with future SO2 controls, significant Hg and
additional PM2.5 reductions
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Progress on NOx Projects
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Current NOx Projects
Chalk Point Unit #2 SACR Morgantown #1 SCR
Potomac River #3-5 SOFA
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Chalk Point #2 SACR
SACR = Selective Auto-Catalytic Reduction Injects ammonia + natural gas in convection pass of
boiler
Gas acts as catalyst for NOx reduction and consumesexcess ammonia
Expecting ~50% reduction in NOx
In final engineering / procurement phase
Reagent switch from anhydrous ammonia to urea System in service late 2005 / early 2006
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Morgantown #1 SCR
First SCR went out for bids in October 2004 Bid evaluation process underway
Currently on schedule for May 2007 in-service date
Urea selected as reagent
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Potomac River #3-5 SOFA
Dampers, drives, ductwork being procured / fabricated All three units to be retrofitted this spring
Low NOx burners installed on Units 3-5 last spring -15% reduction
Low NOx burners installed on Unit 1-2 last fall - 5-10%reduction
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Potomac River SOFA
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Burner
Corner
SOFA
Port
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Multipollutant Legislation
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Multipollutant Legislation
Cap & Trade approach vs. Percent Reduction Realistic Timeline to Implement
Technical: Time to engineer, procure, and install
Financial: Cost of NOx, SO2, & Hg controls simultaneously
Alignment with Federal programs
Mercury
Substantial Co-benefits from NOx & SO2 controls
No large scale / long term demonstrations yet
Continuous Hg monitors not commercially available
CO2
Few options for significant reduction on coal-fired units
Fuel switch / repowering to gas costly to customer and generator
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Questions
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