Patents by Inventor Theodore B. Simpson

Theodore B. Simpson 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: 6054043
    Abstract: A process for the reductive hydrogenation of insufficiently hydrogenated, non-volatile carbonaceous materials to produce vaporizable products wherein the feed materials are brought into initial solution under pressure 300-500.degree. C. with or without the addition of recycle solvent with or without added catalyst. The catalyst may, as an option, be added during agglomeration, if that technique is used, as an oily precursor or as a slurry of a somewhat hydrophobic {namosize} nanosize particulate catalyst or catalyst precursor. Short-contact-time reactors providing plug-type flow and high shear are used. The resultant ashy slurry is passed, highly dispersed, into a fluidized or moving bed of solids that may be inert or catalytic at 350-500.degree. C. and 100-3500 psi where a reducing gas passing up through the bed reductively increases the volatility and decreases the molecular weight of the feed in what is the equivalent of reaction of the feed on each particle in an extremely piston flow manner.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: April 25, 2000
    Inventor: Theodore B. Simpson
  • Patent number: 5015366
    Abstract: In a coal liquefaction process an aqueous slurry of coal is prepared containing a dissolved liquefaction catalyst. A small quantity of oil is added to the slurry and then coal-oil agglomerates are prepared by agitation of the slurry at atmospheric pressure. The resulting mixture is drained of excess water and dried at atmospheric pressure leaving catalyst deposited on the agglomerates. The agglomerates then are fed to an extrusion device where they are formed into a continuous ribbon of extrudate and fed into a hydrogenation reactor at elevated pressure and temperature. The catalytic hydrogenation converts the extrudate primarily to liquid hydrocarbons in the reactor. The liquid drained in recovering the agglomerates is recycled.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: May 14, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: John A. Ruether, Theodore B. Simpson