Patents by Inventor Hendricus A. Dirkse

Hendricus A. Dirkse 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).

  • Aeration tube discharge control device
    Patent number: 5129766
    Abstract: The invention is directed to a method and apparatus for establishing and maintaining a uniform mass flow rate of particulate solids and gas mixture from a container to a receiving reactor. A preferred embodiment utilizes an aeration tube suspended in the particulate mixture and serving as a fluidic valve to maintain a uniform mass flow rate. A portion of the aeration gaseous fluid may be directed upward in aid of such flow.
    Type: Grant
    Filed: June 21, 1988
    Date of Patent: July 14, 1992
    Assignee: Shell Oil Company
    Inventors: Hendricus A. Dirkse, Johannes E. G. Ploeg, Rene Rombout, Rudi Everts, Andrew M. Scott, Thomas S. Dewitz, Charles M. Arbore, Uday Mahagaokar
  • Aerated discharge device
    Patent number: 5106240
    Abstract: The invention is directed to a method and apparatus for establishing and maintaining a uniform mass flow rate of particulate solids and gas mixture from a container to a receiving reactor. A preferred embodiment utilizes a plurality of porous inserts in the walls of the container through which a gaseous fluid is forced thereby contacting particulate solids within said container and enhancing the flow of said solids.
    Type: Grant
    Filed: June 21, 1988
    Date of Patent: April 21, 1992
    Assignee: Shell Oil Company
    Inventors: Hendricus A. Dirkse, Andrew M. Scott, Thomas S. Dewitz, Rene Rombout, Charles M. Arbore, Uday Mahagaokar, Rudi Everts
  • Compartmented gas injection device
    Patent number: 4941779
    Abstract: Injection of gas into a bed of solids contained in a hopper is compartmentalized to allow independent control of gas to be vented upward and gas and solids to be discharged.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: July 17, 1990
    Assignee: Shell Oil Company
    Inventors: Thomas S. Dewitz, James A. Salter, James J. McCusker, Andrew M. Scott, Hendricus A. Dirkse
  • Aeration apparatus for discharge control of particulate matter
    Patent number: 4934876
    Abstract: The invention is directed to a method and apparatus for establishing and maintaining a uniform mass flow rate of particulate solids and gas mixture from a container to a receiving reactor. A preferred embodiment utilizes an aeration tube suspended in the particulate mixture which, in conjunction with a second independent aeration device, serves as a fluidic valve to maintain a uniform mass flow rate.
    Type: Grant
    Filed: June 21, 1988
    Date of Patent: June 19, 1990
    Assignee: Shell Oil Company
    Inventors: Hendricus A. Dirkse, Thomas S. Dewitz, Andrew M. Scott
  • Feed hopper design
    Patent number: 4869622
    Abstract: The present invention is directed to an apparatus and method for equalizing the flow rate of a combustible, particulate solids, such as coal, and gas mixture discharged from a feed vessel apparatus in a uniform manner to a pressurized receiving reactor, such as a gasifier.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: September 26, 1989
    Assignee: Shell Oil Company
    Inventors: James A. Salter, James J. McCusker, Charles M. Arbore, Hendricus A. Dirkse, Rudi Everts, Gunter Eckstein, Andrew M. Scott, Teunis Terlouw
  • Feed line-ultrasonic activated gas injection
    Patent number: 4844663
    Abstract: The present invention is directed to an apparatus and method for minimizing mass flow rate fluctuations of a particulate solid fuel and gas mixture having a coal mass flow rate ranging from about 50-800 kg/m.sup.3 and a corresponding frequency range of about 0.1 to 100 Hertz transported to a reactor.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: July 4, 1989
    Assignee: Shell Oil Company
    Inventors: James A. Salter, Thomas S. DeWitz, Hendricus A. Dirkse, Johannnes W. Van Der Meer
  • Feed line-pulsed gas injection
    Patent number: 4834588
    Abstract: The present invention is directed to an apparatus and method for minimizing mass flow rate fluctuations of a particulate solid fuel and gas mixture having a coal mass flow rate ranging from about 50-800 kg/m.sup.3 and a corresponding frequency range of about 0.1 to 100 Hertz transported to a reactor.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: May 30, 1989
    Assignee: Shell Oil Company
    Inventors: James A. Salter, Thomas S. DeWitz, Hendricus A. Dirkse, Johannes W. van der Meer
  • Feed line design
    Patent number: 4830545
    Abstract: The present invention is directed to an apparatus and method for minimizing mass flow rate fluctuations of a particulate solid fuel and gas mixture having a coal mixture mass flow rate of about 50-800 kg/cubic meter and a corresponding frequency range of about 0.1 to 100 Hertz to a reactor.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: May 16, 1989
    Assignee: Shell Oil Company
    Inventors: James A. Salter, Thomas S. Dewitz, Andrew M. Scott, Hendricus A. Dirkse, Johannes W. van der Meer