Study The Effect Of Water – Gas Shift Equilibrium on Adiabatic Flame Temperature for Alkanes Family Fuels at rich conditions

Abstract

The effect of water –gas shift equilibrium on adiabatic flame temperature for Alkanes family fuels was studied.The calculations of adiabatic flame temperatures were carried out by developing a program by using visual basic 6 language, based on a general algorithm meant to compute the equilibrium composition of products for any fuel–oxidizer gaseous mixture. The algorithm is based on the thermodynamic principles. Ten compounds were considered as products: the fuel (CnH2n+2), CO2, CO, H2O, N2, O2, CH4, C2H6, C3H8, C4H10, H2,their heat were capacities expressed as function of temperature with the form: Cp=ao+a1T+a2T2+a3T3. Two methods with and without water –gas shift equilibrium were used to analysis the products gases. The results showed, adiabatic flame temperature calculated with water –gas shift equilibrium greater than that calculated without water –gas shift equilibrium.