Patents by Inventor Edward W. Dillingham

Edward W. Dillingham 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).

  • Patent number: 5183478
    Abstract: Quenched slag discharged from a gasification process such as a coal gasification process can be continually dewatered and removed without disrupting operations by alternately discharging the quenched slag from means such as lockhoppers and directing the slag to one of two disengagement zones symmetrically arranged on either side of a clear water pit. The slag settles along a sloping active disengagement zone, allowing water to separate and drain into an adjacent slag pit. The accumulated water is drained into the clear water pit through vertically-spaced drains in the walls separating the slag pits from the clear water pit and pumped away after solids have settled. After an active disengagement zone-slag pit is used for a period of time, perhaps 24 hours, the discharge of slag is redirected to the other such area while dewatered slag is removed from the first slag pit.
    Type: Grant
    Filed: December 15, 1991
    Date of Patent: February 2, 1993
    Assignee: Texaco Inc.
    Inventors: Douglas K. Holland, Edward W. Dillingham
  • Patent number: 4436613
    Abstract: A two-stage cascade flow fluid catalytic cracking process capable of converting high molecular weight hydrocarbons containing catalyst poisons into products of lower molecular weight with high activity cracking catalyst susceptible to catalyst poisons, the cascade flow process resulting in higher yields of desired motor fuel fractions than those obtainable with conventional riser flow fluid catalytic cracking processes. Catalyst poisons, e.g.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: March 13, 1984
    Assignee: Texaco Inc.
    Inventors: Scott M. Sayles, Leonce F. Castagnos, Jr., Charles H. Schrader, Edward W. Dillingham, Richard P. Scott, deceased
  • Patent number: 3966587
    Abstract: An improved method is disclosed for controlling the temperature of the fluidized dense catalyst phase of the regeneration zone in a fluid catalytic cracking unit, wherein the coke laydown in the reaction zone is at a level such that the coke concentration of the partially deactivated catalyst from the reaction zone is not sufficient to provide the heat required to maintain the controlled temperature in the fluidized dense catalyst phase of the regeneration zone. In this method, torch oil is added to the partially deactivated catalyst in the spent catalyst transfer line in an amount such that the catalyst charged to the regeneration zone contains sufficient combustible material to provide the heat necessary to maintain the fluidized dense catalyst phase of the regeneration zone at the controlled temperature.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: June 29, 1976
    Assignee: Texaco Inc.
    Inventors: Joel S. Bittensky, Edward W. Dillingham, William R. Menzies, III, Roy E. Pratt