Patents by Inventor Stanley M. Farabee

Stanley M. Farabee 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 controlling sedimentation in an ebulated bed process
    Patent number: 5156733
    Abstract: In an ebullated bed process, it has been found that in switching from one sediment yielding feedstock to a second sediment yielding feedstock that the transient sediment concentration has caused unit shutdowns with lost production. A method has been found which avoids these high transient sediment concentrations. Fresh addition is substituted for regenerated catalyst addition until the average carbon on catalyst in the bed drops to 22 wt% basis carbon free catalyst. Second feedstock is added incrementally and sediment in the product analyzed. After full second feedstock rate is achieved, first feedstock is reduced incrementally with sediment analysis. Higher unit utilization is achieved with the corresponding increased yearly production.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: October 20, 1992
    Assignee: Texaco Inc.
    Inventors: Govanon Nongbri, Gerald V. Nelson, Stanley M. Farabee