Patents by Inventor Norma Beatriz Castagnola

Norma Beatriz Castagnola 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).

  • Start-up of high selectivity catalysts in olefin oxide plants
    Patent number: 7696368
    Abstract: A method to achieve a controlled start-up temperature of an expoxidation process which exceeds the maximum achievable temperature of the epoxidation reactor relative to using an external heat source. The method of the present invention employs an oxidation reaction within the reactor to bring the temperature of the reactor to a temperature that is suitable for conditioning a high selectivity catalyst. The method of the present invention includes first bringing a reactor including a high selectivity catalyst to a first temperature using the external heat source to the reactor, while staying within the reactor design limitations and maintaining a gas flow to the reactor that is within 25 to 100% of the design rates. Once the reactor has achieved the first temperature, at least an olefin, e.g., ethylene, and then oxygen are introduced to the reactor feed gas.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: April 13, 2010
    Assignee: SD Lizenzverwertungsgesellschaft mbH & Co. KG
    Inventors: Barry Jay Billig, James Mann, Norma Beatriz Castagnola, Christian Gueckel, Andrzej Rokicki
  • START-UP OF HIGH SELECTIVITY CATALYSTS IN OLEFIN OXIDE PLANTS
    Publication number: 20080306291
    Abstract: A method to achieve a controlled start-up temperature of an expoxidation process which exceeds the maximum achievable temperature of the epoxidation reactor relative to using an external heat source. The method of the present invention employs an oxidation reaction within the reactor to bring the temperature of the reactor to a temperature that is suitable for conditioning a high selectivity catalyst. The method of the present invention includes first bringing a reactor including a high selectivity catalyst to a first temperature using the external heat source to the reactor, while staying within the reactor design limitations and maintaining a gas flow to the reactor that is within 25 to 100% of the design rates. Once the reactor has achieved the first temperature, at least an olefin, e.g., ethylene, and then oxygen are introduced to the reactor feed gas.
    Type: Application
    Filed: May 7, 2008
    Publication date: December 11, 2008
    Applicant: SD LIZENZVERWERTUNGSGESELLSCHAFT MBH & CO. KG
    Inventors: Barry Jay Billig, James Mann, Norma Beatriz Castagnola, Christian Gueckel, Andrzej Rokicki