Comparison of a discrete coal gasification global model in an entrained flow gasifier with the GRI-Mech 1.2 mechanism

In this study a two-dimensional model of the coal gasification process in an entrained flow gasifier is investigated with a CFD software. Euler approach is used to simulated gas phase while the Lagrangian one is used to describe the solid phase. The current paper is focused on the importance of the gas phase simulation on the gasification model performance. Eddy dissipation concept is applied to simulate homogenous phase reactions a turbulence-chemistry interaction. Other available models have also been mentioned. Global reaction mechanism have been used initially. Consecutively the detailed GRI-Mech 1.2 Mechanism was implemented. GRI-Mech 1.2 Mechanism used in this study includes 176 homogenous embedded reactions and additional 3 heterogeneous reactions. The results of calculations obtained with both mechanisms exhibit good compatibility.