Patents by Inventor Donald Madge

Donald Madge 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).

  • Publication number: 20060249439
    Abstract: Discloses apparatus to perform a process to remove water and minerals from a bitumen froth output of a oil sands hot water extraction process. A bitumen froth feed stream is diluted with a solvent and supplied to a primary inclined plate separator stage, which separates the bitumen into an overflow stream providing a bitumen product output from the circuit and a bitumen depleted underflow stream. A primary cyclone state, a secondary inclined plate separator stage and a secondary cyclone stage further process the underflow stream to produce a secondary bitumen recovery product stream and a recycle stream. The secondary bitumen recovery product stream is incorporated into and becomes part of the circuit bitumen product output stream. The recycle stream is incorporated into the bitumen froth feed stream for reprocessing by the circuit.
    Type: Application
    Filed: July 13, 2006
    Publication date: November 9, 2006
    Inventors: William Garner, Donald Madge, William Strand
  • Publication number: 20060138036
    Abstract: An apparatus for separating bitumen from a bitumen froth output of a oil sands hot water extraction process comprises an inclined plate separator (IPS) for providing a first bitumen separation stage and a cyclone for providing a second bitumen separation stage. The cyclone overflow is recycled to the IPS inlet.
    Type: Application
    Filed: February 24, 2006
    Publication date: June 29, 2006
    Inventors: William Garner, Donald Madge, William Strand
  • Publication number: 20060138055
    Abstract: An apparatus to perform a process to remove water and minerals from a bitumen froth output of a oil sands hot water extraction process comprises: (i) a cyclone body having an elongated conical inner surface defining a cyclone cavity extending from an upper inlet region with a diameter DC to a lower apex outlet with a diameter DU; (ii) an inlet means forming an inlet channel extending into the upper inlet region of the cyclone cavity; and (iii) a vortex finder forming an overflow outlet of a diameter (DO) extending into the upper inlet region of the cyclone cavity toward the lower apex outlet and having a lower end extending an excursion distance below the inlet channel; wherein a fluid composition entering the inlet channel into the cyclone cavity is urged by force of gravity and velocity pressure downward toward the lower apex and variations in density of the constituent components of the fluid composition cause the lighter component materials to be directed toward the overflow outlet of the vortex finder.
    Type: Application
    Filed: February 24, 2006
    Publication date: June 29, 2006
    Inventors: William Garner, Donald Madge, William Strand
  • Publication number: 20050150816
    Abstract: An inline bitumen froth steam heater system is comprised of steam injection and static mixing devices. The steam heater system heats and de-aerates an input bitumen froth without creating downstream processing problems with the bitumen froth such as emulsification or live steam entrainment. The inline bitumen froth steam heater is a multistage unit that injects and thoroughly mixes the steam with bitumen resulting in an output bitumen material having a homogenous temperature of about 190° F. The heating system conditions a superheated steam supply to obtain saturated steam at about 300° F. The saturated steam is contacted with a bitumen froth flow and mixed in a static mixer stage. The static mixers provide a surface area and rotating action that allows the injected steam to condense and transfer its heat to the bitumen froth. The mixing action and the increase in temperature of the bitumen froth results in reduction in bitumen viscosity and also allows the release of entrapped air from the bitumen froth.
    Type: Application
    Filed: April 16, 2004
    Publication date: July 14, 2005
    Inventors: Les Gaston, Donald Madge, William Strand, Ian Noble, William Garner, Mike Lam