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Connect with us. Corrosionpedia Explains Hydrogen Sulfide Scavenger H2S Scavenger Hydrogen sulfide occurs naturally in crude oil and can be generated from refining processes, including hydro-cracking, hydrolysis and elemental sulfur production. H 2 S scavengers can provide successful treatment in a wide range of applications, including: H 2 S removal from gas streams H 2 S removal from sour hydrocarbon liquids condensate and NGL streams H 2 S reduction in sour liquid tank vapor spaces Scavenger programs are selected depending on the nature of the H 2 S problem being addressed and the petroleum product being treated.
These are the preferred additives for use in flare gas, LPG, residues and crude oils. A Gulf Coast refiner was using metal salt technology in an ongoing program for asphalt treatment but continued to experience inconsistent results and unacceptable H 2 S levels in asphalt s. Read more. Hydrogen sulfide is produced because of the microbial breakdown of organic materials in the absence of oxygen. H 2 S generation can occur in petroleum reservoirs, wastewater treatment plants, and sewers to name a few.
H 2 S is a colorless and deadly gas present in crude oil and many intermediate petroleum products. In recent years, industry and public concerns have heightened awareness of health and safety issues associated with H 2 S in petroleum products in refineries, terminals, shipping vehicles, and handling equipment.
As a result, and in many cases, mandatory 10 ppm H 2 S vapor space specifications have been added to these products. The specifications must be met prior to product shipment from the refineries and terminals to ensure the health and safety of potentially impacted individuals.
The direct introduction of hydrogen sulfide and other reduced sulfur compounds such as mercaptans generated from inorganic and organic reactions in petrochemical plants, paper mills, steel mills, and other industrial processes into process water and wastewater streams. In wastewater applications, a primary contributor to hydrogen sulfide is the biochemical reduction of inorganic sulfur compounds to sulfide by sulfate-reducing bacteria SRB under anaerobic or low dissolved oxygen conditions.
Previous work has shown the methodology for H2S scavenger evaluation 2, however, it has not been determined yet the conditions that supports a better performance of a specific chemical product. Flow, tubing diameter, injection velocity, kind of injection, etc , the likelihood of interference presence of hydrocarbons and other sulfur containing compounds , compatibility with other chemical treatments downstream of injection point, like Amine plants, Triethylene glycol TEG , and corrosion inhibitors.
TEG is used in gas processing system for gas dehydration. It is useful to evaluated scavengers with TEG to confirm that the scavenger and their reaction products would not degrade the TEG. Wilson 3 has performed some research in this area and has found that H2S liquid scavengers and their reaction products did not degrade TEG, obtaining low corrosion rates less than 0.
When a chemical treatment is recommended for specific problem to be solved, it might cause interference with one of the othe. Sign In or Register. Advanced Search. Sign In. Skip Nav Destination Proceeding Navigation. Close mobile search navigation. All Days. Previous Paper Next Paper. Article Navigation.
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