Noncorrosive Metal Complex Catalysts for Oxidation of Hydrogen Sulfide and Mercaptans in Petroleum Products

High activity of metal complex catalytic systems comprising nitrogenous bases and copper sulfates, acetates, and basic carbonate in oxidation of hydrogen sulfide and light mercaptans with atmospheric oxygen was established. Their activities are close to that observed for the chlorine-containing anal...

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Bibliographic Details
Published in:Petroleum chemistry 2022-06, Vol.62 (6), p.628-635
Main Authors: Pletneva, I. V., Gavrilov, Yu. A., Moiseeva, N. I., Gekhman, A. E.
Format: Article
Language:English
Subjects:
Acetates
Carbonates
Catalysts
Chemistry
Chemistry and Materials Science
Chlorine
Copper
Corrosion and anti-corrosives
Corrosion effects
Deceleration
Hydrogen sulfide
Industrial Chemistry/Chemical Engineering
Oxidation rate
Petroleum products
Sulfur compounds
Thiols
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Summary:High activity of metal complex catalytic systems comprising nitrogenous bases and copper sulfates, acetates, and basic carbonate in oxidation of hydrogen sulfide and light mercaptans with atmospheric oxygen was established. Their activities are close to that observed for the chlorine-containing analogs, while no corrosion effect is exerted. An increase in the initial concentration of H 2 S has negligible effect on its conversion rate. Mercaptans do not affect the H 2 S oxidation rate, whereas an increase in the hydrogen sulfide concentration decelerates mercaptan oxidation. This is a diffusion-controlled reaction; hence, intensification of mixing of the catalyst with the hydrocarbons affords a 30–40% increase in the demercaptanization efficiency. The efficiencies displayed in demercaptanization processes by the catalytic systems and by the conventional scavengers neutralizing light sulfur impurities were compared.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544122050061