Sulfur degassing process
View Patent ↗A process is disclosed for removing hydrogen sulfide from liquid sulfur including: passing a liquid sulfur feed comprising liquid sulfur and hydrogen sulfide to a vaporizer; vaporizing at least a portion of the liquid sulfur feed in the vaporizer to thereby form a first vapor stream comprising gaseous sulfur and gaseous hydrogen sulfide; partially condensing the first vapor stream in a condenser to form a liquid product stream comprising liquid sulfur and a second vapor stream comprising hydrogen sulfide; wherein the liquid product stream has a lower concentration of hydrogen sulfide than the liquid sulfur feed.
1. A process for removing hydrogen sulfide from liquid sulfur comprising:
passing a liquid sulfur feed comprising liquid sulfur and hydrogen sulfide to a vaporizer;
vaporizing at least a portion of said liquid sulfur feed in said vaporizer to thereby form a first vapor stream comprising gaseous sulfur and gaseous hydrogen sulfide;
partially condensing said first vapor stream in a condenser to form a liquid product stream comprising liquid sulfur and a second vapor stream comprising hydrogen sulfide; wherein said liquid product stream has a lower concentration of hydrogen sulfide than said liquid sulfur feed.
2. The process of claim 1 wherein said liquid sulfur feed is vaporized at a pressure below atmospheric.
3. The process of claim 1 wherein the hydrogen sulfide concentration in said liquid product stream is less than about 50 wt. % of the hydrogen sulfide concentration in said liquid sulfur feed.
4. The process of claim 1 wherein the hydrogen sulfide concentration in said liquid product stream is less than about 20 wt. % of the hydrogen sulfide concentration in said liquid sulfur feed.
5. The process of claim 1 wherein the hydrogen sulfide concentration in said liquid product stream is less than about 10 wt. % of the hydrogen sulfide concentration in said liquid sulfur feed.