Liquid-Phase Oxidation of Hydrogen Sulfide in Oil with Molecular Oxygen in the Presence of an Ammonia Solution of Cobalt
- PDF / 221,321 Bytes
- 6 Pages / 612 x 792 pts (letter) Page_size
- 15 Downloads / 227 Views
IFIC TECHNOLOGICAL PROCESSES
Liquid-Phase Oxidation of Hydrogen Sulfide in Oil with Molecular Oxygen in the Presence of an Ammonia Solution of Cobalt Phthalocyanine O. M. Kornetovaa,*, A. M. Mazgarova, A. F. Vil’danova, I. K. Khrushchevaa, N. R. Ayupovaa, and I. R. Aslyamova a Research
Institute “VNIIUS,” Kazan, 420061 Russia *e-mail: [email protected]
Received February 4, 2020; revised April 5, 2020; accepted April 15, 2020
Abstract—The results of studying the dependence of the reaction rate of the hydrogen sulfide oxidation in
oil with molecular oxygen in the presence of an ammonia solution of cobalt phthalocyanine on the process temperature, the consumption of the catalyst complex, and the concentration of cobalt phthalocyanine in the catalyst complex are reported. It was shown that the rate of the hydrogen sulfide oxidation strongly depends on the consumption of the catalyst complex and the concentration of cobalt phthalocyanine in the catalyst complex. Based on experimental data, a mathematical model was derived that describes the hydrogen sulfide oxidation with satisfactory accuracy. The calculated values obtained using this mathematical model are in good agreement with the experimental data. Keywords: hydrogen sulfide, catalytic oxidation, elemental sulfur, ammonia solution of cobalt phthalocyanine DOI: 10.1134/S1070427220090153
An increase in the production of oils containing significant amounts of hydrogen sulfide and low molecular weight mercaptans, ras well as a constant tightening of requirements for the content of these compounds in commercial oil require the development of new effective technologies for the field purification of crude oil from hydrogen sulfide and mercaptans [1–3]. The high content of hydrogen sulfide and mercaptans is typical for oils and gas condensates of the Caspian lowland, the Volga-Ural oil and gas province, and the Timan-Pechora oil and gas province. In the region between the Volga and the Urals and in the TimanPechora oil and gas province, heavy carbonic oils are produced, which are characterized by a high content of hydrogen sulfide, while the total content of methyl and ethyl mercaptans does not exceed 40 ppm. The oils of the Caspian lowland contain both hydrogen sulfide
and low molecular weight mercaptans in quantities that significantly exceed the regulatory values. The extraction, transportation, and storage of such oils are accompanied by the release of a significant amount of highly volatile toxic and corrosive hydrogen sulfide and low molecular weight C1–C4 mercaptans. The presence of hydrogen sulfide and low-molecularweight mercaptans in oil causes corrosive destruction of oilfield equipment and pipelines. Depressurization of oil pipelines, equipment and oil spills on the soil and in water bodies lead to large-scale environmental disasters, as well as cause irreparable harm to human health. To prevent the possibility of such situations arising the State Standard GOST R 51858-2002 “Oil. General technical conditions,” was introduced im 2002, according to which the transported oil
Data Loading...
