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Show notably CO. On the other hand, if the initial VM yield is at the ASTM value, we can account for behavior at the very fuel-rich conditions (-70% excess air), but we then have to assume that the VM yield is enhanced at high oxygen levels in an amount proportional to the oxygen required for their combustion. This would tie pyrolysis to the VM combustion in a way not previously sug-gested. There is an apparent contradiction here that needs to be resolved. REFERENCES 1. Csaba. 1. "Pulverized Coal Flame Propagation". Ph.D. Thesis, Dept. Fuel Tech. & Chern. Eng., University of Sheffield (UK), 1964. 2. Beer, I.M., Thring, M.W., and Essenhigh, R.H. "A One-Dimensional Pulverized Fuel Flame with Controlled Mixing", Combustion and Flame 3, 557-560 (1959). 3. Howard, I.B. and Essenhigh, R.H. Ind. Eng. Chern., Proc. Des. & Devel. 2., 74- th. 4 (1967); Proc. 11 . Symposium (lnternat.) on Combustion, pp. 399-408, The Combustion Institute, Pittsburgh, PA., 1967. 4. Cogoli, I.G., Gray, D., and Essenhigh, R.H. "Flame Stabilization of Low Volatile Fuels", Comb. Sci. and Technol., 16 165-176 (1977). 5. Gee. I.M., Han, K-I., Hardin, E., Li, Z., Purvis, D., Shaw, D., and Essenhigh, R.H. "Comparative Combustion Behavior of Chars and Coal in a One- Dimensional Flame Furnace". Spring Meeting of the Central States Section of the Combustion Institute, Paper #CSS/CI-84-13, Minneapolis, MN., March 1984 6. Goldberg, P.M. and Essenhigh, R.H. "Coal Combustion in a let-Mix Stirred 1.h. Reactor", Proc. 17 . Symposium (Internal.) on Combustion, pp. 145-154, The Combustion Institute, Pittsburgh, PA., 1979. |