
Tuesday, August 23, 2022
Triazine Vs. Non-Triazine for H2S Treatment
When choosing the appropriate H2S Scavenger either for oil treatment, acid gas sweetening, mercaptan odor removal or through mechanical processes,…
Q2 Technologies Team
Experts in H2S Scavenging Solutions
With decades of combined experience, the Q2 Technologies team specializes in innovative hydrogen sulfide (H2S) scavenging solutions for the oil and gas, wastewater treatment, and industrial sectors.
Why Choose Between Triazine and Non-Triazine?
When choosing the appropriate H2S Scavenger either for oil treatment, acid gas sweetening, mercaptan odor removal or through mechanical processes, it is essential to fully analyze the different alternatives on the market, as different products are better suited for different applications and process conditions. As our analysis will show, one may be better than the other depending on the specific conditions of what needs to be treated. Over the years, triazine-based treatment has been the go-to solution for many Producers, Midstreamers, and Refiners, and to a large extent it is still the go-to choice. But for some, implementing new technology such as non-triazine products has positively impacted their operations and has lowered their costs. Is one better than the other? That all depends on your use case and process conditions. Here you’ll find a brief description of both triazine and non-triazine alternatives to help inform you of the effective solutions on the market for your application.
Triazine Treatment
Triazine for H2S scavenging is an established and reliable chemical reaction that is employed in the Oil & Gas industry to remove H2S from gas streams. The H2S scavenging can be done via direct injection in pipelines with fog nozzles, wet scrubbers, or bubble towers at either wells, central batteries or midstream systems. The triazine scavenging technique is most cost-effective for gaseous streams with sulfur loading of less than 1000 lbs. per day. It typically reduces H2S concentrations to <4 ppm and partially removes several light mercaptans (methyl, ethyl, and propyl). Triazine’s ability to remove H2S is affected by various parameters, including temperature, pH, contact duration, and natural gas composition. The final product is water soluble and is usually discharged in the produced water tanks and commercial saltwater disposal facilities.
It is important to note that using triazine as an H2S scavenger may cause fouling from the polymerization of dithiazine in contact towers, scrubbers and/or pipelines. Careful use and monitoring of the triazine solution is needed to ensure smooth operation. Q2 Technologies has been manufacturing traditional triazine blends for decades and also offers expertise in developing unique formulas for special cases.
Non-Triazine Treatment
Even though triazine is a well-trusted solution, many companies have chosen non-triazine-based scavengers as alternatives for use in crude oil applications. One of the main characteristics of our non-triazine product, Pro3®, is a non-amine and non-glyoxal technology, making it safe for refineries and pipelines. If left unchecked, Amine salts that form from spent triazine can ultimately cause damage to the top stacks of a refinery when heated to >500 °F. Many refiners in the US Gulf Coast and overseas monitor amine content and require traders and midstream companies to use vetted non-triazine chemistries.
Advantages of Non-Triazine H₂S Scavengers
Producers and Midstream companies alike have found success with our non-triazine products:
- The quality of the oil is upgraded when H2S content is reduced.
- Safer environment for all personnel on-site.
- Infrastructure and equipment will last longer now that corrosion caused by H2S has been neutralized.
- Our non-triazine scavengers are not based on commodity-priced products, so our prices are protected and are less impacted by external factors such as freezes and industrial raw material shortages.
Field Results and Performance
Our non-triazine H2S removal technology has proven to reduce chemical use up to 50-75% as compared to triazine. This definitely does not mean that triazine should always be replaced by non-triazine, rather, Q2 Technologies can assist you from a technical, engineering, and commercial viewpoint. Each application is different and needs to be carefully analyzed to determine the treatment product.
Triazine vs. Non-Triazine: Key Considerations
In conclusion, both triazine and non-triazine scavengers have their benefits and are the go-to alternatives for oil and gas treatment. However, one may be better than the other depending on the specific characteristics of the product that needs to be treated. For more information on triazine-based scavengers for natural gas operations, check out our detailed overview here. If you’re looking for the right H2S scavenger solution for your company, feel free to contact us! You can also read more about how switching to Pro3® can be the game-changer for your operations in our detailed comparison of triazine versus non-triazine treatments here
Sources:
https://www.sciencedirect.com/science/article/abs/pii/S1875510017304559
FAQs
Triazine is primarily used for hydrogen sulfide (H2S) removal, but it can react with certain light mercaptans under specific conditions. However, its effectiveness with heavier mercaptans is limited. For operations dealing with a broader range of sulfur compounds, Q2 Technologies often recommends using a specific, personalized formulation to achieve more comprehensive and efficient treatment.
The cost-effectiveness of Pro3® versus triazine depends on the project’s specific needs, including crude composition, treatment goals, and infrastructure. In some scenarios, Pro3® may provide long-term advantages through lower dosage rates, minimal byproduct formation, and reduced equipment maintenance. That said, triazine remains a reliable and proven option in many applications. Q2 Technologies offers both solutions and works closely with clients to determine the best fit for their operations.
Yes, Pro3® is designed to be infrastructure-friendly. Unlike triazine, it doesn’t produce problematic solids or corrosive byproducts that can damage pipelines, valves, or refining equipment. Its clean reaction and compatibility with downstream processes help ensure long-term asset integrity and safer operations.
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