Propane limiting oxygen concentrations

The catal5dic behavior in propane ammoxidation of Sb V=1.0 and 3.0 is summarized in Fig. 1. The tests were carried out using a propane concentration of about 8% and oxygen as the limiting reactant, because these experimental con-dit-ions agree with those indicated as preferable in the patent literature [12] and from the analysis of the reaction kinetics [9,10]. 

It is further found that the adiabatic flame temperature is approximately 1300 °C for mixtures involving inert diluents at the lower flammable limit concentration. The accuracy of this approximation is illustrated in Figure 4.19 for propane in air. This approximate relationship allows us to estimate the lower limit under a variety of conditions. Consider the resultant temperature due to combustion of a given mixture. The adiabatic flame temperature (7f ad), given by Equation (2.22) for a mixture of fuel (Xp), oxygen (Xo2) and inert diluent (Xd) originally at 7U, where all of the fuel is consumed, is... 

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