Patents by Inventor Valentin V. Nemkov

Valentin V. Nemkov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for the purification of hydrogen sulfide-containing gases
    Patent number: 4886649
    Abstract: A starting hydrogen sulfide-containing gas is purified by way of a two-stage oxidation to elemental sulfur with oxygen which is supplied in an amount of 100-110% of the stoichiometric quantity necessary for oxidizing hydrogen sulfide to elemental sulfur. Oxidation at the first stage is carried out in a fluidized bed of a granular catalyst containing 10-20% by mass of magnesium chromite on aluminium oxide. At the second oxidation stage, the unreacted hydrogen sulfide and oxygen from the first stage are reacted at 140.degree.-155.degree. C. in the presence of a catalyst to form elemental sulfur.The invention may be used in decontamination of natural gases high in hydrogen sulfide, gas releases of oil refinery and coke chemical plants.
    Type: Grant
    Filed: February 8, 1989
    Date of Patent: December 12, 1989
    Inventors: Zinfer R Ismagilov, Kirill I. Zamaraev, Sergei R. Khairulin, Tofik G. Alkhazov, Foat R. Ismagilov, Alexei A. Ivanov, Georgy B. Barannik, Mikhail A. Kerzhentsev, Valentin V. Nemkov, Valentin N. Parmon