Method for the combustion of fuel

Abstract

The present invention relates to a process for the combustion of fuel ( 5 ) supplied to the combustion zone ( 2 ) of a burner ( 1 ), using oxygen or a mixture of oxygen and carbon dioxide. The invention further relates to a burner for carrying out the process of the invention. To provide a process allowing stable combustion of the fuel using oxygen or a mixture of oxygen and carbon dioxide at a carbon content of less than 21% by volume, the invention proposes a cyclic flow ( 8 ) being created in the combustion zone ( 2 ) through which a homogeneous mixing of hot combustion products with the fuel ( 5 ) and the oxygen on the one side and with the fuel ( 5 ) and the mixture of oxygen and carbon dioxide on the other side takes place in the combustion zone ( 2 ).

1 .- 10 . (canceled) 
   
   
       11 . A process for the combustion of fuel supplied to the combustion zone of a burner using oxygen or a mixture of oxygen and carbon dioxide,
 wherein in the combustion zone a strongly recycling cyclic flow is created through which heat and combustion products are transferred to the combustion zone, whereby the combustion in the combustion zone is stabilized.   
   
   
       12 . The process according to  claim 11 , wherein the cyclic flow is created substantially in the entire combustion zone. 
   
   
       13 . The process according to  claim 11 , wherein the fuel, the oxygen and/or the flue gas are supplied to the combustion zone from different directions or from the same direction. 
   
   
       14 . The process according to  claim 11 , wherein the components of the flue gases are completely burnt in the combustion zone or are partly removed from the combustion zone to be used for different purposes outside the combustion zone. 
   
   
       15 . A burner comprising a combustion zone for the combustion of fuel supplied to the combustion zone, using oxygen or a mixture of oxygen and carbon dioxide, wherein the combustion zone of the burner includes fluid-mechanical installations for creating a strongly recycling cyclic flow in the combustion zone, through which heat and combustion products are transferred to the combustion zone. 
   
   
       16 . The burner according to  claim 15 , comprising several supply channels. 
   
   
       17 . The burner according to  claim 15 , comprising a swirling device. 
   
   
       18 . The burner according to  claim 16 , comprising a swirling device.