Patents by Inventor Anja Mannerla

Anja Mannerla 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).

  • Cumene oxidation
    Patent number: 8975444
    Abstract: A process for oxidizing cumene to cumene hydroperoxide using an oxygen containing gas, which process composes—conducting a cumene feed and an oxygen containing gas feed to at least the first oxidation reactor in a series of 3-8 reactors, thereby forming an oxidation mixture, and—conducting the oxidation mixture from one oxidation reactor to at least one subsequent reactor, wherein—the reactors are operated with reducing liquid levels; —the oxidation is operated as a dry oxidation, whereby the only gaseous feeds conducted to the oxidation reactors are the cumene feed and the oxygen containing gas feed; —the oxygen containing gas feed is washed with caustic and then with water to remove all acidic or caustic traces before conducting it into an oxidation reactor; —the pressure within each oxidation reactor is in the range of 0-10 barg; —the off-gases from the top section of each oxidation reactor are separated and cooled, whereby a condensate containing unreacted cumene is formed, and—washing the condensate and
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: March 10, 2015
    Assignee: Borealis AG
    Inventors: Veli-Matti Purola, Anja Mannerla
  • CUMENE OXIDATION
    Publication number: 20110301384
    Abstract: A process for oxidizing cumene to cumene hydroperoxide using an oxygen containing gas, which process composes—conducting a cumene feed and an oxygen containing gas feed to at least the first oxidation reactor in a series of 3-8 reactors, thereby forming an oxidation mixture, and—conducting the oxidation mixture from one oxidation reactor to at least one subsequent reactor, wherein—the reactors are operated with reducing liquid levels; —the oxidation is operated as a dry oxidation, whereby the only gaseous feeds conducted to the oxidation reactors are the cumene feed and the oxygen containing gas feed; —the oxygen containing gas feed is washed with caustic and then with water to remove all acidic or caustic traces before conducting it into an oxidation reactor; —the pressure within each oxidation reactor is in the range of 0-10 barg; —the off-gases from the top section of each oxidation reactor are separated and cooled, whereby a condensate containing unreacted cumene is formed, and—washing the condensate and
    Type: Application
    Filed: December 17, 2009
    Publication date: December 8, 2011
    Applicant: BOREALIS AG
    Inventors: Veli-Matti Purola, Anja Mannerla