How does triazine H2S scavenger work?
Reaction Process One mole of triazine reacts with two moles of H2S to form dithiazine, the main byproduct. An intermediate product is formed, but rarely seen. The reaction is shown in Figure 3. The R-groups that are released during the two-step reaction vary by the supplier, and can be tailored for solubility.
What factors affect the reaction and the efficiency of H2S scavenger treatment?
During stimulation treatments, the efficiency of triazine based H2S scavengers is susceptible to conditions, such as pH, temperature and exposure time [9], [10], [11]. Additionally, other factors, such as H2S/scavenger stoichiometry, can affect the reaction of triazine based H2S scavengers with H2S.
What does H2S scavenger do?
H2S scavengers are widely used in hydrocarbon processing facilities to maintain plant worker’s safety and productivity and eliminate their odor emissions. These specialized chemicals react selectively with and remove H2S to help meet product and process specifications.
What is MEA triazine?
MEA Triazine is the most commonly used chemical for applications requiring a non-regenerative hydrogen sulfide scavenger. It is used by the oil and gas industry to remove toxic and corrosive hydrogen sulfide from natural gas, refinery streams and olefins cracker products.
Is H2S scavenger corrosive?
Corrosionpedia Explains Hydrogen Sulfide Scavenger (H2S Scavenger) The presence of H2S can also reduce overall system efficiency and operational reliability, as the gas is corrosive and can lead to iron sulfide fouling.
What is the disadvantage of using solid H2S scavengers?
Hydrogen sulphide can be dangerous to personnel on the surface as it is extremely toxic to human and even animal life, and is extremely corrosive to most metals as it can cause crack- ing of drill pipe and tubular goods, and destruction of testing tools and wire lines.
How do you make MEA triazine?
MEA-triazine is produced by mixing stoichiometrically equal amounts of monoethanolamine and formaldehyde. Three molecules of MEA plus three molecules of formaldehyde produced one MEA-triazine molecule and three molecules of water.
What is Triazene used for?
Triazines are selective herbicides used to control a wide spectrum of grass and broadleaf weeds in cereal, oilseed, and horticultural crops. Triazine herbicides kill weeds by interfering with the electron transport chain in photosystem II (PS II).
Why is triazine aromatic?
The atoms in triazine rings are analogous to those in benzene rings, which makes triazines aromatic compounds like benzene.
Is triazine water soluble?
By increasing the temperature of the water, the solubilities of the triazine pesticides increased approximately 3-fold in pure water for each 25 degrees C temperature increment. Cyanazine was 5 times more soluble than atrazine and an order of magnitude more soluble than simazine at 100 degrees C.
How do you neutralize hydrogen sulfide gas?
When dealing with a hydrogen sulfide gas leak, the National Oceanic and Atmospheric Administration recommends using water to spray down the gas, then adding sodium bicarbonate to neutralize it.
How do H2S Scavengers work?
Hydrogen sulfide scavenger technology comes in many commercially available types. Most scavengers work on a surface adsorption process or through ionic precipitation. If surface adsorption is the method, there must be enough fluid turbulence to assure that the scavenger and the sulfide actually collide in order for the necessary reactions to occur.
What is the pH of H2S?
At a pH of 7.0 SU, equal concentrations of dissolved H2S and HS- exist in equilibrium, while at a pH of 8.0 SU, only about 10% of the dissolved sulfide exists as H2S(aq). Increasing the pH reduces corrosion by maintaining the dissolved sulfide in the HS- or S- form.
What is H2S program?
H2S awareness is a summary training program on the basics of Hydrogen Sulphide gas. It is a classroom style theory seminar to make the participant have a general awareness of the physical properties of H2S, a toxic, corrosive, flammable and explosive substance.
