Cyclone Burner

Abstract

A description is given of a cyclone burner for converting solid fuel comprising a substantially rotationally-symmetric whirling chamber ( 1 ), means for introducing gas and fuel into the whirling chamber ( 1 ), means for bringing the gas and fuel into rotation in the whirling chamber ( 1 ) and an outlet ( 4 ) for the gas and the converted fuel where the outlet ( 4 ) is centrally positioned in the outlet end ( 3 ) of the whirling chamber ( 1 ). The cyclone burner is characterized in that the whirling chamber ( 1 ) comprises a conical shaped portion ( 2 ) having the smaller diameter furthest from the outlet end ( 3 ) and in that the means ( 5 ) for introducing gas are connected to the whirling chamber ( 1 ) along the length of the conical shaped portion ( 2 ).

1 . A cyclone burner for converting solid fuel comprising a substantially rotationally-symmetric whirling chamber ( 1 ), means ( 5 ,  6 ) for introducing gas and fuel into the whirling chamber ( 1 ), means for bringing the gas and fuel into rotation in the whirling chamber ( 1 ) and an outlet ( 4 ) for the gas and the converted fuel where the outlet ( 4 ) is centrally positioned in the outlet end ( 3 ) of the whirling chamber ( 1 ) characterized in that the whirling chamber ( 1 ) comprises a conical shaped portion ( 2 ) having the smaller diameter furthest from the outlet end ( 3 ) and in that the means ( 5 ) for introducing gas are connected to the whirling chamber ( 1 ) along the length of the conical shaped portion ( 2 ). 
     
     
         2 . A cyclone burner according to  claim 1  characterized in that the means ( 5 ) for introducing gas are connected tangentially to the conical shaped portion ( 2 ). 
     
     
         3 . A cyclone burner according to  claim 1  or  2  characterized in that the means for introducing gas comprise a number of gas inlets ( 5   a ) arranged one after another along the length of the conical shaped portion ( 2 ). 
     
     
         4 . A cyclone burner according to  claim 1  or  2  characterized in that the means for introducing gas comprise a gas inlet ( 5   c ) with a single opening extending over the major part of the length of the conical shaped portion ( 2 ). 
     
     
         5 . A cyclone burner according to any preceding claim characterized in that the means for introducing fuel comprise a tangentially arranged fuel inlet ( 6 ). 
     
     
         6 . A cyclone burner according to any preceding claim characterized in that the angle of the conical shaped portion ( 2 ) relative to the centre axis ( 8 ) of the whirling chamber ( 1 ) is between of 5 and 20 degrees. 
     
     
         7 . A cyclone burner according to any preceding claim characterized in that the predominant portion or the entire whirling chamber ( 1 ) is conically. 
     
     
         8 . A cyclone burner according to any preceding claim characterized in that the cyclone burner is arranged horizontally. 
     
     
         9 . A cyclone burner according to any preceding claim characterized in that the outlet ( 4 ) comprises an outlet duct which protrudes into the whirling chamber ( 1 ). 
     
     
         10 . A cyclone burner according to any preceding claim characterized in that the means ( 6 ) for introducing fuel is connected to that half of the whirling chamber ( 1 ) which is closest to the outlet end ( 3 ).