Table 8 Different overfire air arrangements.
Simulation results-different overfire air arrangements | |||||||
|---|---|---|---|---|---|---|---|
Conditions | Avg. turbulence intensity at y = 8190 (m2/s2) | Oxygen content at outlet of third flue (%) | Avg. temperature of first flue (K) | Temperature at outlet of first flue (K) | Temperature at outlet of third flue (K) | Residence time at 850 ℃ (s) | NOx at outlet of third flue (mg/Nm3) |
3-1 | 10.81 | 6.88 | 1,198.43 | 1,127.61 | 989.23 | 3.44 | 266.14 |
3-2 | 10.06 | 6.89 | 1,209.51 | 1,133.15 | 1,001.92 | 3.44 | 260.23 |
3-3 | 10.30 | 6.88 | 1,207.93 | 1,149.19 | 999.00 | 3.42 | 260.73 |
3-4 | 10.01 | 6.86 | 1,200.57 | 1,145.17 | 1,003.63 | 3.42 | 262.34 |
3-5 | 10.58 | 6.86 | 1,201.55 | 1,137.95 | 998.32 | 3.42 | 261.31 |
3-6 | 15.50 | 6.91 | 1,200.13 | 1,133.12 | 990.94 | 3.41 | 267.74 |
3-7 | 9.83 | 6.91 | 1,214.75 | 1,126.62 | 996.55 | 3.41 | 268.14 |
3-8 | 9.73 | 6.87 | 1,207.11 | 1,143.61 | 996.71 | 3.41 | 264.92 |
3-9 | 9.63 | 6.89 | 1,217.82 | 1,137.60 | 1,007.72 | 3.43 | 260.48 |
3-10 | 9.57 | 6.88 | 1,192.49 | 1,151.52 | 1,000.44 | 3.39 | 258.45 |
