This article analyzes the combustion reaction between the fuel (ACPM) and combustion (AIR) that occurs inside the combustion chamber of a pyrotubular boiler using Ansys® software and selecting the fluent method (CFD), being the indicated one To simulate fluids. A study of the behavior of the temperature and pressure through the total length of the combustion chamber and in turn the molar and mass fractions of the products resulting from the combustion. The results of the variables were compared with the approach of a mathematical model implemented in the simulink tool, taking into account the same conditions and the ACPM fuel.