Demercaptanization of Light Hydrocarbon Fractions with Strong Aqueous Ammonia without Producing Sulfur Caustic Wastewater

A technology for the demercaptanization of light hydrocarbon fractions and liquefied petroleum gas with 25% aqueous ammonia is proposed. One advantage of this method for the demercaptanization of oil fractions over conventional processes such as Merox is the absence of a stage of oxidative catalytic...

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Published inTheoretical foundations of chemical engineering Vol. 54; no. 5; pp. 1078 - 1082
Main Authors Andreev, B. V., Ustinov, A. S., Akopyan, A. V., Anisimov, A. V., Eseva, E. A., Kleimenov, A. V., Kondrashev, D. O., Khrapov, D. V., Esipenko, R. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2020
Subjects
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Petrochemistry and Oil Refining
mercaptans
sulfur ammonia wastewater
hydrogen sulfide
wastewater treatment
sweetening
ammonia
strong aqueous ammonia
liquified hydrocarbon gases
sulfur caustic wastewater
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Summary:A technology for the demercaptanization of light hydrocarbon fractions and liquefied petroleum gas with 25% aqueous ammonia is proposed. One advantage of this method for the demercaptanization of oil fractions over conventional processes such as Merox is the absence of a stage of oxidative catalytic recovery of spent caustic and highly toxic sulfur caustic wastewater. Spent (saturated with sulfur compounds) aqueous ammonia is recovered at the same plant for the distillation of sulfur ammonia wastewater in which aqueous ammonia is produced.
ISSN:0040-5795
1608-3431
DOI:10.1134/S004057952005005X