Patents by Inventor Alexej V. Frolov

Alexej V. Frolov 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 of treating natural gas to obtain a methane rich fuel gas
    Patent number: 4305733
    Abstract: A method for the recovery of a methane-rich natural gas from a natural gas containing, apart from methane, also hydrogen sulfide, carbondioxide, higher hydrocarbons and, in most cases, organosulfur compounds. According to the invention a hydrocarbon fraction of C.sub.4 hydrocarbons and higher is naturally removed from the natural gas which is then subjected to a selective scrubbing for the removal of hydrogen sulfide with a regeneratable extraction, of scrubbing liquid. Next a C.sub.3 fraction is removed, the remaining gas being scrubbed with a second regeneratable washing agent, for the removal of carbondioxide to leave the methane-rich gas.
    Type: Grant
    Filed: March 6, 1980
    Date of Patent: December 15, 1981
    Assignees: Linde AG, Vniigaz
    Inventors: Walter Scholz, Gerhard Ranke, Hans Becker, Boris G. Bergo, Alexander I. Grizenko, Alexej V. Frolov