wet esps for particulate control enhancement from utility boilers · 2011. 1. 19. · wet esps for...
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Wet ESPs for Particulate Control Enhancement from Utility Boilers
presented toMcIlvaine Hot Topics Web Seminar
January 20, 2011by
Geoenergy Division of A.H. Lundberg Associates, Inc.
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Regulatory Situation
• Regulations will drive future technology decisions
• Utility Boiler MACT expected March, 2011
• EPA providing no preliminary direction; Boiler MACT still unresolved
• Great uncertainty
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Possible (Probable?) Challenge
1. Coal-fired boiler with wet FGD
2. Emissions above “best 12%” MACT mandate
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Define the Problem
• Possibilities
Dry particulate escaping from dry ESP
Solids laden mist
Acid mist
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Approaches
• Improve dry ESP Gas flow improvements
Rapping improvements
Gas flow distribution improvements
Advanced power supplies and pre-charging
• Add-on to FGD Improve mist eliminators
Add wet ESP
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Wet ESP Advantages
• Proven technology
• Little added pressure drop
• Little added parasitic load
• No gas flow barrier
• Excellent performance on all particles, liquid or solid
• Install off line; tie in during brief outage
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Wet ESP Performance
Power Off
Power On
Off/On Side by Side
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Utility Wet ESP Experience
• 6 units in operation on NA major utility sources
• 2 large systems in construction on utility projects
• Many in operation on industrial boilers
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First Energy Burger Station
• 50 MW capacity
•Installed/operated as demonstration unit by Powerspan for multi-pollutant process• Operated 2004 through 2010• Excellent reliability and performance
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AES Deepwater 1985
• 150 MW capacity • Operating since 1986• Petroleum coke fired • Designed to control sulfuric acid mist
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Conclusion
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Wet ESPs for Particulate Control Enhancement from Utility Boilers
presented toMcIlvaine Hot Topics Web Seminar
January 20, 2011by
Geoenergy Division of A.H. Lundberg Associates, Inc.