Aztec Combustion Calculator

The calculator requires a few basic inputs to calculate the products of combustion, the adiabatic flame temperature(coming soon), the water dew point, the SO3 (sulfur trioxide) formation, the H2SO4 dew point, and the expected NOx generation(coming soon) . See additional comments below the calculation table.

Gaseous Fuel Composition

Fuel Component Volume Fraction Fuel Component Volume Fraction
CH4 C6+
C2H6 H2
C2H4 CO
C3H8 CO2
C3H6 N2
C4H10 NH3
C4H8 H2S
C5H12 H2O
C5H10 O2
Total
Heat Duty MMBtu/hr
Fuel LHV Btu/ft3
Fuel Flow SCFH
 
Liquid Fuel Composition
Component Wt. Frac.
Carbon
Hydrogen
Oxygen
Nitrogen
Sulfur
Total
   
Fuel LHV Btu/lb
Oil Duty MMBtu/hr
Flow lb/hr
Operating Parameters
Excess Air %
Ambient Air Temp F
Relative Humidity %
Radiant Temperature F

Results

Combustion Air SCFH    
Combustion Products SCFH % Wet % Dry
Carbon Dioxide
Water
Oxygen
Nitrogen
Sulfur Dioxide
Sulfur Trioxide
NOx
Total    
Water Dew Point F    
SO3 - ppm    
SO3 Dew Point F To

The H2SO4 dew point is highly dependent on the quantity of SO3 formed. The predicted SO3 formation is based on empirical data, but is dependent on a number of factors that includes the burner design. There is considerable information that is fairly constant for calculation of the SO3 dew point for SO3 concentrations greater than 100 ppm. However, the reported dew points for low concentrations of SO3 vary considerably. The calculator provided above calculates a maximum and minimum dew point based reported literature values.