## Implementation of SCR



# at Southern Company EPRI Second Workshop

for 

### Selective Catalytic Reduction April 18 - 21, 2000 Ed Healy Darryl Wall Krista Paseur

### Presentation Outline

Regulated Business • Regulatory Drivers • Strategy Development • SCR Design Philosophy • Project Examples Implementation of SCR at Southern Company

Non Regulated Business • Business Issues and Drivers • SCR Design Philosophy • Project ExamplesImplementation of SCR at Southern Company



### Regulatory Drivers • Title IV of 1990 Clean Air Act - Acid Rain Program • Title I of 1990 Clean Air Act - Old, 1 - hour Ozone Standard - Regional NOx SIP Call - New, 8 - hour Ozone Standard • EPA NSR Lawsuit

### Ozone Non - Attainment Counties

Attala Clarke Covington Forrest George Hancock Harrison Jackson Jasper Jefferson Davis Jones Kemper Lamar Leake Madison Marion Neshoba

Newton Pearl River Perry Rankin Simpson Smith Stone Walthall Wayne

Winston 1 - Hour and 8 - Hour Potential 8 - Hour Implementation of SCR at Southern Company

### Old 1 - Hour Ozone Standard Potential NOx Compliance Requirements*

Alabama Power Georgia Power Gulf Power Mississippi Power Arkwright Branch Wansley Mitchell Gadsden Greene Co. Barry Smith

Crist Scholz Daniel Watson McIntosh Kraft Savannah Electric Miller Gorgas Gaston Scherer Hammond Bowen McDonough Yates McManus * Assumed tonnage cap in 2007 based on 0.15 lb/MBtu NOx rate Implementation of SCR at Southern CompanyImplementation of SCR at Southern CompanyImplementation of SCR at Southern Company 

### Developing a NO x 

### Compliance Strategy • Develop unit specific conceptual capital / O&M cost estimates and performance expectations. • Use projected future years’ generation/fuel burn to project future NO x emissions • Develop a menu of NO x control technologies and combinations of technologies for each unit • Rank the controls for each unit on a $/ton of NO x removed basis • Select units and controls based on least $/ton basis to achieve required NO x reductionImplementation of SCR at Southern Company 

### SCR Conceptual Capital Cost EstimateImplementation of SCR at Southern Company



### SCR Conceptual O&M Cost EstimateImplementation of SCR at Southern Company 

### SCR Design Philosophy - New Generation • Natural Gas (only) Combined Cycle Plants • GE Frame 7 Combustion Turbine • Year Round SCR Operation (No HRSG Bypass) • SCR Designed for Power Augmentation • SCR Procured as part of HRSG Suppliers Scope • SCR Emission Performance - 3.5 ppm NOx - 10 ppm NH 3 Slip - 5 year catalyst lifeImplementation of SCR at Southern Company



### SCR Design Philosophy - Retrofit • Large Pulverized Coal - fired Boilers • Non Attainment Area Emission Averaging Between Plants • Ozone Season Operation (full flow bypass) • Anhydrous Ammonia Reagent • SCR Emission Performance - 85% NOx Reduction - 2 ppm NH 3 Slip with NOx and Slip Distribution - 16,000 Hour Catalyst Life - 1% SO 2 to SO 3 Oxidation (maximum) - Pressure Drop Determined on Plant by PlantImplementation of SCR at Southern Company



### SCR Design Philosophy - Retrofit

(continued) • Use Combination of Cold Flow and CFD Modeling • Maximum Leverage Engineering • Volume Procurement of SCR Components - Catalyst - Dampers - Sootblowers - Ammonia Storage and Vaporization • Maximize Use of Modularized Design & Construction • Utilize Combination of Implementation Contracts • Maximize Current Planned Outage ScheduleImplementation of SCR at Southern Company 

### Regulated Project Example - New Generation Barry / Daniel Combined Cycle Project • 2 x 500 MW Combined Cycle Blocks at Each Site • GE Frame 7FA Combustion Turbine • Natural Gas (only) Fuel • Vogt / Hitachi SCR Furnished with HRSG • Hitachi Plate Catalyst • Anhydrous Ammonia • Commercial Operation - Ozone Season 2000Implementation of SCR at Southern Company



### Barry Combined Cycle Project SCR Spool PieceImplementation of SCR at Southern Company 

### Regulated Project Example - Coal Retrofit

Georgia Power Plant Bowen • Units 1&2: 756 MW Supercritical T - Fired Boilers • Units 3&4: 950 MW Supercritical T - Fired Boilers • Central Appalachian Coal (~1% Sulfur, 12% Ash) • 85% NOx Removal: 0.45 #/MBTU / 0.07 #/MBTU • 2 ppm NH 3 Ammonia Slip • Southern Company Generation Design • Cormetech Catalyst • Anhydrous Ammonia • Two Construction Outages • Commercial Operation - U1/2 Ozone Season 2001 - U3/4 Ozone Season 2003Implementation of SCR at Southern Company



### Plant Bowen Unit 1 SCR Construction

APH Outlet Duct ESP Crossover Duct Blocking Back of Boiler HouseImplementation of SCR at Southern Company



### Plant Bowen Unit 1 SCR Construction

Crossover Duct InterferenceImplementation of SCR at Southern Company



### Pl ant Bowen Unit 1 SCR Construction Interference Removed SOUTHERN 

### A COMPANY Energy to Serve**~ur** World"Implementation of SCR at Southern Company



### Pl ant Bowen Unit 1 SCR Construction

SOUTHERN 

### A COMPANY Energy to Serve**~ur** World"Implementation of SCR at Southern Company



### Plant Bowen Unit 1 SCR Construction Water Collecting Excavated HoleImplementation of SCR at Southern Company



### Plant Bowen Unit 1 SCR Construction Unit 1 Unit 2Implementation of SCR at Southern Company

Alabama Power Power Plant Gorgas Unit 10 • 780 MW Supercritical T - Fired Boilers • Alabama Coal (~1.5% Sulfur, 12% Ash) • 85% NOx Removal: 0.55 #/MBTU / 0.08 #/MBTU • 2 ppm NH 3 Ammonia Slip • Southern Company Generation Design • Cormetech Catalyst • Anhydrous Ammonia • One Construction Outage Required • Commercial Operation - Ozone Season 2002 

### Regulated Project Example - Coal RetrofitImplementation of SCR at Southern Company



### Plan t Gorgas Unit 10 SCR Concept

SOUTHERN 

### A COMPANY Energy to Serve**~ur** World"Implementation of SCR at Southern Company 

### Plant Gorgas Unit 10 SCR Fuel AnalysisImplementation of SCR at Southern Company



### Non - Regulated Business Drivers • Permitting of New Projects and Additional Generating Capacity • Local Non - attainment Requirements • Local State SIP Requirements • NOx Allowance Trading Revenue • Offsets for Various Industrial Sources • Deregulation and Merchant Plant Dispatch Considerations • Wide Range and Variety of Spot Market Fuels • Satisfy Local Regulatory RequirementsImplementation of SCR at Southern Company



### Non - Regulated Project Example Southern Energy Canal • 2 x 600 MW No. 6 Oil - fired Boilers • 80% NOx Removal: 0.28 #/MBTU / 0.06 #/MBTU • 2 ppm NH 3 Ammonia Slip • ABB Alstom Power Turnkey Contract • Cormetech Catalyst (special formulation for oil) • First Demonstration of Ammonia on Demand (AOD) TM Urea Based Reagent System • Commercial Operation - Ozone Season 2000Implementation of SCR at Southern Company



### Can al Unit 1 SCR Construction SCR Modular Construction SOUTHERN 

### A COMPANY Energy to Serve**~ur** World"Implementation of SCR at Southern Company



### Can al Unit 1 SCR Construction

SOUTHERN 

### A COMPANY Energy to Serve**~ur** World"Implementation of SCR at Southern Company



### Canal Unit 1 SCR Construction Ductwork Route In/Out of Building Lower Catalyst Support ElevationImplementation of SCR at Southern Company



### Regulated BusinessImplementation of SCR at Southern Company



### Non - Regulated Business• Approximately 15,000 MW of SCR Projects

- 26 Active Projects, 15 Regulated, 11 Non - regulated - 9600 MW Regulated and 5,400 MW Non - regulated - 5000 MW New, 10,000 MW retrofit - 6800 MW coal, 1200 MW oil, 7000 MW gas • Diverse Catalyst Supply - 4100 MW Plate, 7400 MW Honeycomb, 3500 MW TBD - Honeycomb Suppliers: Cormetech, Ceram/Frauenthal - Plate Suppliers: Siemens, Hitachi, Haldor - Topsoe 

### Summary Implementation of SCR at Southern Company• Multiple Contract Methods for Implementation

- Turnkey EPC - Subcontract to Major Equipment Supplier - Self Perform EP - Alliance (future) • No Regrets Strategy - Variety of NOx Control Technologies Used - SCR Deployed on Large, High Capacity Units - Least Cost Compliance Utilizing Averaging Plans - Targeted Research to Lower Cost / Increase Performance



### Summary (continued) Implementation of SCR at Southern Company• SCR Implementation Must Consider Regulated and Non - Regulated Project Requirements • Current NOx Research Work - PRB Catalyst Testing - Advanced Catalyst Formulations - Alternate Reagents - Balance of Plant Assessment Studies - Next Generation Power Generation Technologies - Catalyst Regeneration - Horizon NOx Control Technologies - Combined Pollutant Technologies



### Summary (continued) Implementation of SCR at Southern Company