H₂S Scavengers

Hu2082S scavengers are chemicals that react with hydrogen sulfide and bind it into anstable, non-volatile product, removing it from a gas or liquid stream. They arennon-regenerable: the scavenger is consumed as it works, so they fit low-to-moderate sulfide loadsnrather than the high-rate duty of a regenerable amine unit. Liquid triazine is the workhorse forndirect injection. Pick a scavenger by the Hu2082S removed per day and the stream phase, not bynproduct name.

Triazine reacts fast with Hu2082S and is dosed by direct injection into a gas line or through ancontact tower, which makes it the default for sour gas gathering. Glyoxal is an aldehydenalternative used in some water and liquid applications. Both are consumed stoichiometrically, sonoperating cost climbs with the sulfide load u2014 above a crossover removal rate, a regenerable aminenunit becomes the cheaper answer. Estimate the expected Hu2082S pounds per day before committing to anscavenger program.

Zinc oxide works differently. It is a solid-bed medium that converts Hu2082S to zinc sulfide as gasnpasses through a packed vessel, which suits polishing duty and low-flow or low-Hu2082S streams. Thenspent bed is a solid that must be changed out and disposed of, so it favors guard-bed and finalncleanup roles rather than high-load front-line service. Use ZnO to polish a stream to a tight Hu2082Snlimit after a liquid scavenger has done the bulk removal.

• Direct-injection Hu2082S scavenging in sour gas gathering and pipelines
• Batch and contact-tower scavenging of produced liquids and crude
• Solid-bed (ZnO) polishing of low-flow or low-Hu2082S gas streams
• Sour-water and tank-vapor Hu2082S control
• Meeting sales-gas Hu2082S specification on low-rate streams

• Triazine scavenger u2014 PubChem
• Glyoxal u2014 PubChem
• Zinc oxide u2014 PubChem