Tubular burner for industrial furnaces

A tubular burner for industrial furnaces, comprising:

• an inner end section projecting into a combustion zone of the furnace supplied with secondary combustion air;
• a plurality of tubular walls arranged radially spaced with respect to one another and coaxially one inside the other, which bound a plurality of separate feed ducts of approximately annular cross-section for combustion gas and fuel;
• wherein in the front end, facing into the combustion zone, of at least one feed duct constructed essentially for supply of combustion gas, there is arranged a number of individual nozzles distributed approximately annularly;
• and
• wherein, viewed in cross-section of the inner burner end section, at least one outer annular feed duct is constructed essentially as fuel feed duct and the combustion gas feed duct equipped with the individual nozzles is arranged radially inside this fuel feed duct.