A gas burner for use with a Claus furnace made up of at least five concentric
tubes
and the spaces formed between them. The diameters of the tubes increase radially
outward so that the first tube has a smaller diameter than the fifth tube. At the
end of the burner closest to the furnace, the tube ends of the third, fourth, and
fifth tubes lie in the same plane. The first and the second tubes are fastened
together and capable of movement along the central longitudinal axis of the burner,
but their ends closest the furnace are not capable of moving past the plane formed
by the third, fourth, and fifth tubes. An injector is located between the first
and second tubes at the end closest the furnace. The injector is oriented towards
the periphery of the burner.
