A process for combusting ammonia-containing gases which also contain hydrogen sulphide.

摘要

Gases containing both ammonia and hydrogen sulphide are combusted in the thermal zone (1) of a sulphur recovery unit in which hydrogen sulphide-containing gases are partially combusted to a mixture of sulphur dioxide and hydrogen sulphide in a ratio of substantially 1:2.
<??>The ammonia- and hydrogen sulphide-containing gases and the said hydrogen sulphide-containing gases are separately introduced to the thermal zone (1) by means of a burner (2) consisting of a double gun having two concentric tubes (3, 4) and surrounded by an air register (7).
<??>The ammonia- and hydrogen sulphide-containing gases are supplied to the thermal zone (1) via the inner (4) of the said two concentric burner gun tubes and the hydrogen sulphide-containing gases are supplied via the outer (3) of the said two concentric burner gun tubes.
<??>The burner (2) debouches into a mixing zone (8) wherein the gases mentioned are mixed with an oxygen-rich gas supplied to said mixing zone (8) via the air register (7) prior to combustion in a combustion zone (9).