MIL-HDBK-1003/6
Ultimate
Proximate
Analysis
Mol
Analysis
% by Weight
Weight
----------------------
---------------
------
Moisture
7.50
Carbon
67.24
12
Volatile Matter 36.74
4.50
2
Fixed Carbon
46.76
Sulfur
2.92
32
Ash
9.00
Oxygen
7.52
32
1.32
28
Water
7.50
18
Ash
9.00
Btu/lb.
12100 (28 193 kJ/kg)
Oxygen Required per 100 Pounds of Coal. The calculation of the air
5.3.2.1
required for combustion is made on an oxygen balance because oxygen is the
only element common to all oxidizing reactions. Oxygen combines with the
three combustibles in the following proportions:
6 CO2
C + O2
H2 + 0.5O2 6 H2O
6 SO2
S + O2
O2 for C
1.0 x (67.24/12) = 5.60 lb.mol O2
O2 for H2
0.5 x (4.50/2)
= 1.13 lb.mol O2
O2 for S
1.0 x (2.92/32) = 0.09 lb.mol O2
S)))))))))))))Q
= 6.82 lb.mol O2
Total
Less O2 in fuel
7.52/32
= 0.24 lb.mol O2
S))))))))))))))Q
O2 required (stoichiometric)
= 6.58 lb.mol O2
O2 in excess air
6.58 x 0.30
= 1.97 lb.mol O2
S)))))))))))))))Q
Total O2 req'd with 30% excess
= 8.55 lb.mol O2
80
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