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TECHNICAL PAPERS: Fuels and Combustion Technology

Fine Particulate Formation During Switchgrass/Coal Cofiring

[+] Author and Article Information
Linda G. Blevins, Thomas H. Cauley

Combustion Research Facility, P.O. Box 969, MS 9052, Sandia National Laboratories, Livermore, CA 94551-0969

J. Eng. Gas Turbines Power 127(3), 457-463 (Jun 24, 2005) (7 pages) doi:10.1115/1.1804540 History: Received April 03, 2003; Revised October 01, 2003; Online June 24, 2005
Copyright © 2005 by ASME
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Figures

Grahic Jump Location
Normalized number distribution for 0%, 25%, 50%, 75%, and 100% coal cofired with switchgrass. Type I uncertainty intervals are shown.
Grahic Jump Location
Correlation of number density of particles between 200 nm and 1 μm with rate of coal addition to the reactor demonstrating that the particles in this size range originate from ash breakup
Grahic Jump Location
Total number densities for particles between 10 nm and 1 μm in diameter for 0%, 25%, 50%, 75%, and 100% coal cofired with switchgrass
Grahic Jump Location
Normalized mass distributions for 0%, 25%, 50%, 75%, and 100% coal cofired with switchgrass. Particle density is assumed to be 1.2 g/cm3 density.
Grahic Jump Location
Total mass concentrations between 10 nm and 1 μm in diameter for 0%, 25%, 50%, 75%, and 100% coal cofired with switchgrass
Grahic Jump Location
Schematic of Sandia MFC showing wall temperatures used for the present experiments. The wall temperature gradient was selected to mimic the convection pass of a boiler. CEM=continuous emissions monitor.
Grahic Jump Location
Schematic of fine particle sampling system
Grahic Jump Location
Dilution probe used for fine particle sampling. The primary dilution ratio in the probe is 22:1.
Grahic Jump Location
Normalized number distribution for natural gas background

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