Flue Gas Generation From Combustion Of Fuels

[mbeychok]

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This should be useful to those of you involved with the environmental emissions from burning various fuels in power plants and other industrial plants. The data below were obtained by stoichiometric calculations.

Milton Beychok
(Contact me at www.air-dispersion.com)
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[rmw]

Milton,

Can you put that page in as a FAQ item?

rmw

 

[mbeychok]

rmw:

I will try putting it in as a FAQ per your suggestion.


Milton Beychok
(Contact me at www.air-dispersion.com)
.

 

[25362]

It would be of interest to add data for a refinery gas of a composition of, say, C_1.6H_4.8 (n/m = 3), also containing about 4% vol of (air+CO₂).

The stoichiometric CO₂ content of flue gases on a dry basis for a refinery gas of C_mH_n where n/m = 3

XS air %=> 0 20 40 60
% CO₂ 13.2 10.8 9.1 7.9

For fuel oils, there are many formulas to estimate their calorific values. One example could be:

P_sup = 9,940 + 32 (^oAPI) kcal/kg​

P_inf = 9,380 + 26 (^oAPI) kcal/kg​

with errors of up to 5% for different fuels. However, if the fuels pertain to one family of crude oils the errors can be brought down to a more acceptable 1.5%.

When burning fuel oils with xs air (assuming perfect combustion) the CO₂ content of the flue gases may vary by a full 1% depending on the gravity and composition of the fuel. O₂, on the other hand, has a narrower variance:

20% XS air, 2.7-2.8% vol​

40% XS air, 6.1-6.2% vol​

60% XS air, 8.1-8.2% vol​