Method for treating hydrogen sulfide-containing waste gases

A method for treating hydrogen sulfide-containing waste gas stream comprising the steps of:

• a. introducing hydrogen sulfide-containing liquid sulfur into a containment vessel to partially fill the containment vessel and create a hydrogen sulfide-containing liquid sulfur phase and a hydrogen sulfide-containing vapor phase;
• b. treating a portion of the hydrogen sulfide-containing liquid phase to produce a liquid sulfur-containing phase and a gaseous hydrogen sulfide-containing phase, the gaseous hydrogen sulfide-containing phase having a pressure of from about 80 to about 120 psig;
• c. withdrawing a portion of the hydrogen sulfide-containing vapor phase using at least one eductor driven by a motive fluid, where the motive fluid is the gaseous hydrogen sulfide-containing phase;
• and
• d. treating the hydrogen sulfide-containing waste gas stream having a pressure of from about 6 to about 14 psig as it exits the eductor to reduce the hydrogen-sulfide content of the waste gas.

A method for treating hydrogen sulfide-containing waste gas stream comprising the steps of:

• a. producing hydrogen sulfide-containing liquid sulfur in a sulfur recovery unit having a burner for combusting a stream of gas and evolving the combustion products into a modified Claus process reactor furnace,
• b. introducing the thus produced hydrogen sulfide-containing liquid sulfur into a containment vessel to partially fill the containment vessel and create a hydrogen sulfide-containing liquid phase and a hydrogen sulfide-containing vapor phase;
• c. withdrawing a portion of the withdrawn hydrogen sulfide-containing liquid phase from the containment vessel and introducing the withdrawn hydrogen sulfide-containing liquid phase and air into a degassing vessel at a pressure of from about 80 to about 120 psig;
• d. withdrawing a portion of the hydrogen sulfide-containing vapor phase using an eductor driven by a motive fluid, where the motive fluid is the gaseous hydrogen sulfide-containing phase;
• and
• e. feeding the hydrogen-sulfide containing waste gas having a pressure of from about 6 to about 14 psig into the burner to reduce the hydrogen-sulfide content of the waste gas.