References – GE P&W FuelSolv - Slag Control Treatment Program at a Southeastern Utility User Manual
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Technical Paper
The visual observations and operator feedback indi-
cated that the synergistic combination of the 1.0-lb
to 1.5-lb magnesium-based product range per ton
of NAPP coal in conjunction with 0.25-lb metal ox-
ide-based product per ton of NAPP coal was very
effective in mitigating slag of the blended fuel. Dif-
ferent coals or coal blends may require customized
product ratios to appropriately address potential
slagging issues.
In addition, several locations were identified as pos-
sible sites for future IK sootblowers and observation
ports to control and monitor slag formation. Lessons
learned include the importance of freeze protection
on the lines and providing options for continuous
mixing with water-based slurries to reduce material
handling difficulties. Future trial goals include quan-
tifying loss on ignition (LOI) with the metal oxide slur-
ry and evaluation of different additives for SO
3
control in the furnace.
Estimates for fuel cost savings are projected to
range from $5,000,000 to $13,000,000 per year by
switching to a 50 percent blend of NAPP opportunity
coal. Even greater savings could be achieved by in-
creasing the blend to include Southern Illinois Basin
(ILB) coal, (Figure 8).
Figure 8: Customer’s Coal Price Ranges
References
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Buchsbaum, Lee. “New Coal Economics”. En-
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Gabriel, Mark, Manager of Business Develop-
ment, GE Water & Process Technologies. “Slag
Control Treatment Program at EKPC Spurlock
Station.” Presented at Electric Power Confer-
ence, Chicago, IL. May 2011.
Hatt, Rod. “Correlating the Slagging of a Utility
Boiler with Coal Characteristics”.
Retrieved from
Metzroth, Lawrence, VP Analysis & Strategy,
Arch Coal Inc. “Regulatory and Other Con-
straints on CAPP Coal Supply.” Presented at
7
th
Annual Coal Trading Conference, New York
City, NY. December 2008. Retrieved from
Mikron camera information retrieved April
2011 from
Pusateri, Robert, President Consol Energy
Sales. “NAPP and the Marketplace.” Present-
ed at McCloskey Coal USA 2009 Conference,
New York City, NY. June 2009. Retrieved from
Schmidtchen, Paul. “High Activity Magnesia
Use for SCR Related SO3 Problems.” Presented
at NETL 2002 Conference. Retrieved from