Patents by Inventor William P. Ferrell

William P. Ferrell 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).

  • Steam modified Claus process
    Patent number: 7597871
    Abstract: Disclosed is a method for treating a gas stream rich in hydrogen sulfide by providing one or more feed gas streams rich in hydrogen sulfide into a Claus reaction furnace, providing air into the Claus reaction furnace, providing supplemental oxygen into the Claus reaction furnace, and providing steam to the Claus reaction furnace, where the steam is in addition to any steam that may be present in gases that are recycled to the Claus reaction furnace. The components are then reacted at a temperature above about 2400° F. and at a pressure sufficient to cause hydrogen sulfide to be converted into sulfur.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: October 6, 2009
    Assignee: Goar, Allison & Associates, Inc.
    Inventor: William P. Ferrell