Sulfur compounds found in crude oil cause many problems. When hydrogen sulfide migrates from the liquid phase to the vapor phase, personnel, the environment, and equipment are put at great risk. H2S is corrosive to metals, especially at high concentrations and temperatures. H2S smells like rotten eggs at the part per billion level and is dangerous to life and health at 100 parts per million and above. Sulfur in crude oil is trending upwards. More than ever, processing companies need safe, cost-effective, and efficient handling methods with no negative impacts. Hydrogen sulfide in crude oil is a result of natural processes occurring within the formation. Specification limits for crude oil vary widely between companies, industrial segments, and countries. Chemical scavengers such as triazines, containing nitrogen, or non-nitrogen scavengers, such as glyoxal, are often used to reduce H2S exposure. While triazines are relatively cost-effective and efficient, processing crude oil treated with triazines introduces corrosion and fouling risks to equipment. Glyoxal requires high dosage making treatment expensive, and its low pH can corrode feed equipment. Athlon Solutions has developed a comprehensive line of non-nitrogen and non-glyoxal H2S scavengers for use in petroleum, each with their own unique properties. They have proven to be cost-effective and efficient at scavenging hydrogen sulfide without the long-term effects typical of triazine scavengers such as corrosion, fouling, and microbiological toxicity in wastewater plants. Crude oils treated with non-nitrogen and non-glyoxal scavengers have been processed safely, cost-effectively, and efficiently without operational restrictions or impact on finished product specifications. Safety, the chemical injection system, testing, and on-site support are also crucial for hydrogen sulfide scavenging projects in addition to chemical selection.
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