Title of article :
Characterization of Biogas-Syngas Turbulent MILD Combustion in the Jet in Hot Co-Flow Burner
Author/Authors :
Benbouaziz, O Laboratory of Advanced Design and Modeling of Mechanical Systems and Thermo - Fluids (CMASMTF) - Department of Mechanical Engineering - FSSA - Oum el Bouaghi University - Algeria , Mameri, A Laboratory of Advanced Design and Modeling of Mechanical Systems and Thermo - Fluids (CMASMTF) - Department of Mechanical Engineering - FSSA - Oum el Bouaghi University - Algeria , Hadef, A Laboratory of Advanced Design and Modeling of Mechanical Systems and Thermo - Fluids (CMASMTF) - Department of Mechanical Engineering - FSSA - Oum el Bouaghi University - Algeria , Aouachria, Z Laboratory of Applied Energy Physics - Department of Physics - University Batna 1 - Batna 05000 - Algeria
Abstract :
Moderate or Intense Low–oxygen Diluted (MILD) combustion is a promising technology with
interesting properties such as high efficiency and zero-emission. The biogas-syngas mixture is also considered a promising new renewable biofuel with low emissions. This work aims to examine the effects of several parameters on the biogas-syngas flame structure and emissions under MILD conditions in the Jet in Hot Co flow (JHC) burner. The turbulence is modeled by the modified standard k-ε model;
whereas combustion-turbulence interaction is handled by the Eddy Dissipation Concept (EDC) in conjunction
with three detailed reaction mechanisms, namely: GRI-Mech 3.0, GRI-Mech 2.11, and DRM 2.11. Effects
of biogas-syngas composition, temperature, and oxygen concentration in the hot co-flow and Reynolds number
of the fuel jet have been elucidated. Results show that flame structure is more sensitive to the increase of
hydrogen in syngas than that of methane in biogas. An increase of oxygen concentration or temperature in the co-flow stream leads to more NO formation whereas Reynolds number augmentation reduced them.
Furthermore, NO species production is globally governed by the NNH route.
Keywords :
Biofuels , Chemical mechanism , MILD combustion , Turbulent non-premixed combustion
Journal title :
Journal of Applied Fluid Mechanics (JAFM)
