Experimental study of the emission characteristics and limits of stable combustion of a multicomponent hydrogen-containing fuel in countercurrent swirling flow

The paper presents an experimental study of the lean and ultra-lean combustion modes of a multicomponent hydrogen-containing fuel in swirling flow under aerodynamic counterflow conditions. A counterflow burner unit was used to implement diffusion-kinetic combustion of a mixture of methane and a multicomponent hydrogen-containing gas in different concentration ratios. The experiments show that the addition of the multicomponent fuel to methane extends the range of stable combustion of lean mixtures and provides a reduction in the emission of polluting components in combustion products. These results can be used to increase the efficiency, safety, and service life of combustion chambers of gas turbine engines and power plants.