INDUSTRIAL GAS TURBINE Combustion Chamber

What are the main principals for combustion?

Fuel
Gasoline is treated as Octane (C8 H18).
Gas oil (Diesel) is treated as Dodecane (C12 H26).
Kerosene is treated as (C12 H24 )
Natural Gas (mixture of 90% Methane CH4 & 10% Ethane C2 H6) is treated as Methane (CH4).

Oxidizer
Any material that is rich in oxygen is called oxidizer, most common oxidizer used in combustion processes is air because it is free oxidizer & located any where.

Combustion
A chemical reaction during which a fuel is oxidized & a large quantity of energy is released.

Combustion reactants
Components that exists before combustion

Combustion products
Components that exists after combustion, any hydrocarbon fuel when it has complete combustion, it will produce Carbon dioxide, water vapor & Nitrogen

NOx
an expression that represent the mixture of Nitrogen oxides (NO & NO2).

SOx
an expression that represent the mixture of Sulfur oxides (SO2 & SO3).
 
Dry air composition
Dry air (on volume basis) consist of 20.9% Oxygen, 78.1% Nitrogen, 0.9% Argon & 0.1% is represent small amount of carbon dioxide, Helium, Neon and Hydrogen.
 
Theoretical air
minimum amount of air that is necessary for complete combustion.
 Excess air
A nmount of extra air that is added to the combustion process to insure complete combustion or to cool down combustion chamber.