Tim Fuller, Eric Fuller and Bijan Hosseininejad; Babcock & Wilcox Power Generation Group, Inc. (Barberton, OH)
Joe Krajna, Lakeland Electric, McIntosh Station (Lakeland, FL)
Harun Bilirgen, Lehigh University, Energy Research Center (Bethlehem, PA)
Power-Gen Europe (2014)
Coal flow imbalance is an issue of concern for many pulverized coal-fired boilers in the power generation industry. Achieving balanced coal flow to burners can have a positive impact on carbon monoxide (CO) and nitrogen oxides (NOx) emissions, Loss on Ignition (LOI), and slagging. For this reason, balancing coal flow is a primary objective of combustion optimization.
In collaboration with the Energy Research Center at Lehigh University, Babcock & Wilcox Power Generation Group, Inc. (B&W PGG) has developed a coal flow control device to affect the distribution of coal flow to burners. Key to its development, the device has been proven to accurately control the coal distribution with negligible impact on the primary air flow distribution. B&W PGG has incorporated this advancement into a commercial system known as the EvenFlow™ coal flow controller.
The first utility-scale demonstration of the EvenFlow coal flow controller was recently completed at Lakeland Electric’s McIntosh Station. Testing of the system included traditional sampling methods, as well as real-time feedback from other systems. This paper presents an overview of the demonstration project, including installation, testing and results.
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