Gas Turbine Handbook : Principles and Practices

Producer Blast Lurgi Lurgi Foster Wellman IGT Shale
Fire Gas Furnace Static Static Wheeler Bureau Winkler Galusha U-Gas Oil
Process Flood from Gas Bed Bed Fluidized of Mines Fluidized Fixed Fluidized Retorting
in Situ Coal + Steam Bed 7644 Bed Bed Bed + in Situ
Air
Oxygen
Steam
Analysis % Mat
O 2 0.12 — — — — — — —
N 2 80 52.4 60 40.26 30.2 50.4 54.5 55.3 50 52 52
CO 2 17 4 11 14.18 10.7 0.5 7.2 10 4 10 10
H 2 O — — —— 0.257 27.8 0.5 — — — — —
CO OAS 29 27 16.71 10.7 31.8 20 22 29 19 20
H 2 — 12 2 22.98 15.7 15.6 15.5 12 15 14 15
CH 4 1 2.6 — 4.97 4.4 0.5 2.8 0.7 2 5 3
C 2 H 6 + 1.25 — — — — — — — — — —
H 2 S 0.48 — — 0.63 0.5 0.7 — — — — —
Molecular Weight 31 25.2 29.25 23.7 22.4 23.97 24.8 26.4 24.5 25.4 25.4
LHV (Btu/scf) 50 150 92.3 165 118 150 132 110 152 145 133
LHV (Btu/lb) 612 2250 1194 2646 2006 2386 2021 1578 2357 2164 1983
Wobbe Index 48 161 91.8 183 134 165 143 115 166 155 142
∆ T stoich (°C) 628 1574 1204 1548 1258 1646 1453 1338 1603 1467 1439
(A/F) stoich by wt. 2.08 1.41 1.462 1.81 1.40 1.48 1.30 1.040 1.5 1.4 1.28
Fuel Flow Mass Ratio 35.1 9.56 18 8.13 10.7 9.01 10.6 13.6 9.1 9.9 10.8
Fuel Flow Vol Ratio 25.3 7.59 13.3 6.67 9.12 7.41 8.62 10.6 7.4 7.9 8.6
Limits of Flammability
Lower U 25 — 17.9 37.59 12.6 18 15.06 16.6 20.5 16.54 17.7 12.5
Upper U 25 — 66.1 73.06 61.8 60.57 69.8 64.95 71.17 66.88 59.0 38.1
Ratio — 3.7 1.94 4.11 3.36 4.64 3.91 3.47 4.04 3.33 2.88
(H 2 /CO) by vol — 0.414 0.074 1.375 1.467 0.491 7.75 0.545 0.517 0.737 0.75
Table C-7-6. Properties of Low-Btu Gas.
Appendix C 369