초록 ▼

A burner for burning gaseous and/or liquid fuels in a combustion space (5), through the face (3) of which an oil lance (12) and/or several gas lances (13 and 14) extend. The oil lance and at least some of the gas lances are surrounded by an air pipe (4) that supplies primary air with its outer surfa

A burner for burning gaseous and/or liquid fuels in a combustion space (5), through the face (3) of which an oil lance (12) and/or several gas lances (13 and 14) extend. The oil lance and at least some of the gas lances are surrounded by an air pipe (4) that supplies primary air with its outer surface demarcating a flue-gas recirculation channel that opens toward the combustion space and surrounded by a source of secondary air. The air pipe and the source of secondary air extend into the combustion space. The air pipe is surrounded inside the combustion space by a baffle (20) that is axially separated from the face of the combustion space. Some of the gas lances surround the air pipe and are mounted on a sector with a diameter that is shorter than the longest diameter of the baffle.

대표청구항 ▼

A burner for burning fuels in a narrow combustion space, comprising: a combustion chamber with said combustion space and having a face member; a fuel lance and at least one gas lance extending through said face member; an air pipe surrounding said fuel lance and at least one gas lance for supplying

A burner for burning fuels in a narrow combustion space, comprising: a combustion chamber with said combustion space and having a face member; a fuel lance and at least one gas lance extending through said face member; an air pipe surrounding said fuel lance and at least one gas lance for supplying primary air; a flue-gas recirculation channel formed by an outer surface of said air pipe and opening toward said combustion space; a source of secondary air surrounding said recirculation channel, said air pipe and said source of secondary air extending into said combustion space; a baffle surrounding said air pipe inside said combustion space and axially spaced from said face member, said baffle having a longest diameter; at least one gas lance surrounding said air pipe and mounted on a sector with a diameter shorter than the longest diameter of said baffle; said air pipe having an exit end within said baffle inside said combustion space, said baffle producing a flow of expanding air-flue gas mixture and preventing incompletely burned flue gas flows from separating and becoming recirculated by injection effects of said primary air, said baffle deflecting simultaneously a flame toward center of said combustion space so that the flue gas is completely burned; a part of said gas lance being located between said air pipe and said baffle, said gas lances extending into said recirculation channel for increasing said injection effects and reducing formation of nitrogen oxides.