초록 ▼

An apparatus is provided for suppressing flame/pressure pulsations in a furnace, in which a flame is surrounded by a gas shroud stream having a higher flow speed, whereby a ring vortex formation is stopped. In order for this gas shroud stream to be able to achieve smaller gas volumes, a screen is pr

An apparatus is provided for suppressing flame/pressure pulsations in a furnace, in which a flame is surrounded by a gas shroud stream having a higher flow speed, whereby a ring vortex formation is stopped. In order for this gas shroud stream to be able to achieve smaller gas volumes, a screen is provided that surrounds the gas outlet openings and runs at a spacing around the burner, so that a flue gas recirculation area associated with the combustion chamber is separated from the outlet location of the gas shroud stream and thus the gas shroud stream itself.

대표청구항 ▼

[ We claim:] [1.] Apparatus for suppressing flame/pressure pulsations in a furnace comprising at least one burner for generating a flame (7) and a combustion chamber (8) into which the flame (7) is directed, the furnace having at least one gas outlet opening (11, 21) from which flows a gas stream (9

[ We claim:] [1.] Apparatus for suppressing flame/pressure pulsations in a furnace comprising at least one burner for generating a flame (7) and a combustion chamber (8) into which the flame (7) is directed, the furnace having at least one gas outlet opening (11, 21) from which flows a gas stream (9, 22) that surrounds the flame (7) in a form of a shroud, the gas stream (9, 22) having a higher flow speed in a flame main propagation direction (13) than outer areas of the flame, and further comprising a screen (15, 19, 20) surrounding the at least one gas outlet opening (11, 21) and running at a radial spacing around a burner outlet, such that a flue gas recirculation area (16) associated with the combustion chamber (8) is separated from the gas stream (9, 22).