| Title |
Char Combustion Kinetics of Kentucky No. 9 Coal as Applied to Atmospheric Fluidized Bed Combustion |
| Creator |
Daw, C. S.; Mitchell, R. E.; Byrd, J. R. |
| Publisher |
Digitized by J. Willard Marriott Library, University of Utah |
| Date |
1985 |
| Spatial Coverage |
presented at Livermore, California |
| Abstract |
Overall char burning rates were measured for Kentucky No. 9 coal and for char elutriated from the Tennessee Valley Authority 20 MW(e) Atmospheric Fluidized Pilot Plant while Kentucky No. 9 was being fed. Low-temperature burning rates (650 to 1100 K) were measured with a thermogravimetric analyzer at Oak Ridge National Laboratory, Oak Ridge, Tennessee. These data are compared with previous thermogravimetric data for Kentucky No. 9 and Ohio No. 6 coal and data from a fixed-sample, tubular-flow reactor at Oak Ridge. High temperature experiments (1390 to 1600 K) were conducted in the entrained-flow reactor at Sandia National Laboratory, Livermore, California. These data are compared with the low-temperature results. It is concluded that the burning rate of Kentucky No.9 char, exclusive of external mass-transfer effects, is best represented by two Arrhenius expressions, one applicable for low temperatures and another applicable for high temperatures. At temperatures typical of atmospheric fluidized bed combustion, the two expressions predict rates of similar magnitude. It is also concluded that the pilot plant elutriate is less reactive than Kentucky No. 9 coal at low temperatures. At high temperatures, the reactivity of the elutriate and coal appear to be nearly equal. |
| Type |
Text |
| Format |
application/pdf |
| Language |
eng |
| Rights |
This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee. |
| Conversion Specifications |
Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth. |
| Scanning Technician |
Cliodhna Davis |
| ARK |
ark:/87278/s6gf0x1z |
| Setname |
uu_afrc |
| ID |
2109 |
| Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6gf0x1z |
