Role of char during reburning of nitrogen oxides. Second quarterly report, January 1, 1994--March 31, 1994
- Univ. of Mississippi, University, MS (United States). Dept. of Chemical Engineering
- Kansas State Univ., Manhattan, KS (United States). Dept. of Chemical Engineering
It has been discovered that nitrogen oxide can be effectively reduced over lignite char surface during one of the staging combustion process named {open_quotes}reburning{close_quotes}. Our work is aimed at a better understanding of the chemical and physical mechanisms in the reburning with chars. Specifically, char gasification and ash catalyzed CO+NO reaction rates will be measured. Research in the second quarter has focused on the modification of the coal feeder, design and fabrication of a new char/ash collector, and char surface area measurement. With these improvements in the coal feeder and ash collector, experiments are performed with greater accuracy and efficiency. The operation of the BET surface area analyzer (Micromeritics model, Flowsorb 2300) necessary for determining the fractal dimension of char surface has been stabilized with respect to various operating parameters. The instrument has been set up to measure the surface areas of coal chars with molecules of nitrogen serving as the adsorbate at the temperature of liquid nitrogen (-195{degrees}C). Some auxiliary equipment and materials have been purchased without cost to DOE to facilitate the operation, calibration, and measurement.
- Research Organization:
- Mississippi Univ., University, MS (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-93PC93227
- OSTI ID:
- 10193793
- Report Number(s):
- DOE/PC/93227-T3; ON: DE95002632; TRN: 94:010269
- Resource Relation:
- Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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