Patent ID: 8382468

Claim:
A method for combusting a solid phase fuel, where the fuel is fed to an inlet opening ( 11 a ) of a burner device ( 10 ) by way of a non-pneumatic feeding means ( 11 ), comprising: flowing oxidant through a first inlet ( 13 a ) of the burner device ( 10 ) with a velocity of at least 100 m/s, through a burner pipe ( 16 ) of the burner device ( 10 ), and out through a burner orifice ( 17 ) at an end of the burner pipe ( 16 ) to a combustion space ( 18 ), so that the oxidant by ejector action causes the fuel to be conveyed through the burner pipe ( 16 ) and out through the burner orifice ( 17 ), wherein the first inlet ( 13 a ) is arranged as one of an opening that completely surrounds the inlet opening ( 11 a ) or a plurality of holes surrounding the inlet opening ( 11 a ), wherein the inlet opening ( 11 a ) and the first inlet ( 13 a ) debouche in one and the same burner pipe ( 16 ), wherein an amount of oxidant per time unit flowed out through the first inlet ( 13 a ) is under stoichiometric in relation to an amount of fuel fed to the inlet opening ( 11 a ), and wherein the oxidant comprises at least 80 percentages by weight oxygen.