Page 334 - Wastewater Solids Incineration Systems

Appendix A Combustion Fundamentals 295

TABLE A.16 Heat balance for combustion of 100 lb/hr of natural gas (CH ) at 60°F inlet and
4
1400°F exhaust temperature, 25% XS air.
Heat of combustion Heat of vaporization Sensible heat Total
Heat inputs, Btu/hr*
Fuel 2 387 500 2 387 500
Air 0 0
Air moisture 0 0
Totals 2 387 500 0 0 2 387 500
Heat outputs, Btu/hr
CO 95 767 95 767
2
O 32 448 32 448
2
N 581 030 581 030
2
H O 238 433 149 551 387 983
2
SO 0 0
2
Totals 0 238 433 858 795 1 097 228
Difference (Input Output), Btu/hr 1 290 272
Percent availability (Difference/Input) 54.04%
*Btu/hr 0.2931 W.

TABLE A.17 Material balance for combustion of 100 lb/hr of no. 2 oil at 125°F inlet and 1600°F
exhaust temperature, 40% XS air.
Carbon Hydrogen Oxygen Nitrogen Sulfur Total
Inputs, lb/hr
Fuel 87.00 13.00 0.00 0.00 0.00 100.00
Stoichiometric air 336.00 1115.40 1451.40
XS air 134.40 446.16 580.56
Air moisture 2.26 18.06 20.32
Totals 87.00 15.26 488.46 1561.56 0.00 2152.28
Outputs, lb/hr
CO 87.00 232.00 319.00
2
O 134.40 134.40
2
N 1561.56 1561.56
2
H O 15.26 122.06 137.32
2
SO 0.00 0.00 0.00
2
Totals 87.00 15.26 488.46 1561.56 0.00 2152.28
Outputs, lb-mole/hr CO O N H O SO Total
2 2 2 2 2
lb-mole/hr 7.25 4.20 55.77 7.63 0.00 74.85
Volume % (wet) 9.69% 5.61% 74.51% 10.19% 0.00% 100.00%
Volume % (dry) 10.79% 6.25% 82.96% 0.00% 100.00%