MODELING CHAR OXIDATION AS A FUNCTION OF PRESSURE ...
MODELING CHAR OXIDATION AS A FUNCTION OF PRESSURE ... MODELING CHAR OXIDATION AS A FUNCTION OF PRESSURE ...
Table A.7. Elemental Analyses of Middleburg Coal and Chars (1" sampling height) C% H% N% S% Sum O%(dif) H/C Coal dry 75.33 4.92 1.643 0.501 82.4 0.784 daf 82.59 5.40 1.80 0.55 90.3 9.66 Char 1 dry 78.88 1.39 1.568 0.309 82.1 0.214 daf 93.93 1.58 1.79 0.35 93.6 6.40 Char 2 dry 79.84 0.80 1.501 0.310 82.4 0.120 daf 95.77 0.96 1.80 0.37 98.9 1.10 Char 3 dry 78.58 1.78 1.652 0.306 82.3 0.272 daf 93.17 2.11 1.96 0.36 97.6 2.39 Char 4 dry 80.56 0.63 1.535 0.271 83.0 0.094 daf 97.36 0.76 1.85 0.33 100.3 -0.30* *Negative value for oxygen concentration by difference due to errors in CHNS and ash analyses. Table A.8. Elemental Analyses of Koonfontain Coal and Chars (1" sampling height) C% H% N% S% Sum O%(dif) C/H Coal dry 72.02 4.27 1.83 0.56 78.7 0.712 daf 82.07 4.86 2.09 0.64 89.7 10.35 Char 1 dry 75.26 1.47 1.60 0.33 78.7 0.234 daf 92.81 1.81 1.98 0.41 97.0 2.99 Char 2 dry 80.07 0.58 1.52 0.28 82.7 0.087 daf 100 * Char 3 dry 76.23 1.85 1.74 0.31 80.1 0.291 daf 93.75 2.28 2.14 0.39 98.6 1.55 Char 4 dry 78.29 0.55 1.51 0.29 80.6 0.084 * Negative %O. daf 98.65 * 152
Table A.9. Elemental Analyses of Four Coals and Their Chars Prepared at CH 4 Fuel-lean Condition C% H% N% S% Sum O%(dif) C/H Yan Quan coal dry 70.42 4.75 1.24 0.573 0.810 Yuan Quan char #2 daf 78.89 5.32 1.39 0.642 86.24 13.76 dry 83.86 0.99 1.19 1.16 0.142 daf * Cerrejon coal dry 75.73 5.21 1.64 1.14 0.825 Cerrejon char #2 daf 81.26 5.59 1.76 1.22 89.83 10.17 dry 85.97 0.69 1.69 0.70 0.096 daf * Han Cheng coal dry 59.83 3.13 1.16 2.34 0.629 Han Cheng char #2 daf 85.21 4.46 1.65 3.34 94.66 5.34 dry 62.46 0.50 1.00 0.77 64.73 0.096 daf * Pittsburgh coal dry 72.09 4.87 1.55 5.29 0.810 Pittsburgh char #2 * Negative %O by difference. daf 81.01 5.48 1.76 5.94 94.17 5.83 dry 71.80 0.63 1.35 4.24 0.105 daf 94.30 0.825 1.77 5.56 102.5 * 153
- Page 121 and 122: taking into account convection, rad
- Page 123 and 124: 2.5x10 -4 2 /sec) 2.0 1.5 Rate (g/c
- Page 125 and 126: Table 7.5. The Experimental Conditi
- Page 127 and 128: The burnout and particle velocity d
- Page 129 and 130: The HP-CBK was used to predict the
- Page 131 and 132: TGA and FFB Data-This Study The rea
- Page 133 and 134: This equation can be derived as fol
- Page 135 and 136: q = A 1p e − E 1 p / RT P os 1 +
- Page 137 and 138: m obs = 0 at high temperatures) and
- Page 139 and 140: Currently the correlations between
- Page 141 and 142: 8. Summary and Conclusions The obje
- Page 143 and 144: 0.5 due to the contribution from th
- Page 145 and 146: Langmuir rate equation, the reactio
- Page 147 and 148: II, in agreement with many observat
- Page 149 and 150: 9. Recommendations The predictive c
- Page 151 and 152: References Ahmed, S., M. H. Back an
- Page 153 and 154: Essenhigh, R. H., D. Fortsch and H.
- Page 155 and 156: Mehta, B. N. and R. Aris , “Commu
- Page 157 and 158: Szekely, J. and M. Propster, "A Str
- Page 159 and 160: Appendices 139
- Page 161 and 162: Introduction Appendix A: Experiment
- Page 163 and 164: detaching the flame from the burner
- Page 165 and 166: To study the effects of steam, CO w
- Page 167 and 168: times at heights of 1, 2, 4, and 6
- Page 169 and 170: analysis. The char reactivities (in
- Page 171: Table A.5. Moisture, Ash and ICP Ma
- Page 175 and 176: temperature profile of the post-fla
- Page 177 and 178: Apparent densities 1.00 0.75 0.50 0
- Page 179 and 180: This observation is somewhat surpri
- Page 181 and 182: It is interesting to compare Figure
- Page 183 and 184: The N 2 BET surfacea areas and H/C
- Page 185 and 186: collected in the #4 reactor conditi
- Page 187 and 188: Rate (gC /g C remaining /sec) 1.6x1
- Page 189 and 190: close to zero, the accumulated erro
- Page 191: Appendix B: Errors and Standard Dev
Table A.7. Elemental Analyses of Middleburg Coal and Chars (1" sampling<br />
height)<br />
C% H% N% S% Sum O%(dif) H/C<br />
Coal dry 75.33 4.92 1.643 0.501 82.4 0.784<br />
daf 82.59 5.40 1.80 0.55 90.3 9.66<br />
Char 1 dry 78.88 1.39 1.568 0.309 82.1 0.214<br />
daf 93.93 1.58 1.79 0.35 93.6 6.40<br />
Char 2 dry 79.84 0.80 1.501 0.310 82.4 0.120<br />
daf 95.77 0.96 1.80 0.37 98.9 1.10<br />
Char 3 dry 78.58 1.78 1.652 0.306 82.3 0.272<br />
daf 93.17 2.11 1.96 0.36 97.6 2.39<br />
Char 4 dry 80.56 0.63 1.535 0.271 83.0 0.094<br />
daf 97.36 0.76 1.85 0.33 100.3 -0.30*<br />
*Negative value for oxygen concentration by difference due to errors in CHNS and ash<br />
analyses.<br />
Table A.8. Elemental Analyses of Koonfontain Coal and Chars (1" sampling<br />
height)<br />
C% H% N% S% Sum O%(dif) C/H<br />
Coal dry 72.02 4.27 1.83 0.56 78.7 0.712<br />
daf 82.07 4.86 2.09 0.64 89.7 10.35<br />
Char 1 dry 75.26 1.47 1.60 0.33 78.7 0.234<br />
daf 92.81 1.81 1.98 0.41 97.0 2.99<br />
Char 2 dry 80.07 0.58 1.52 0.28 82.7 0.087<br />
daf 100 *<br />
Char 3 dry 76.23 1.85 1.74 0.31 80.1 0.291<br />
daf 93.75 2.28 2.14 0.39 98.6 1.55<br />
Char 4 dry 78.29 0.55 1.51 0.29 80.6 0.084<br />
* Negative %O.<br />
daf 98.65 *<br />
152
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