Patents by Inventor Johannes E. G. Ploeg

Johannes E. G. Ploeg 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
  • Method and apparatus for separating fine particulates from a mixture of fine particulates and gas
    Patent number: 4865627
    Abstract: A method and apparatus for removal of fine particulate fly ash at high temperature and pressures using a bag filter which produces a clean gas stream that is recycled to compressors or power recovery turbines and a concentrated syngas stream blowdown from which additional solids are subsequently removed.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: September 12, 1989
    Assignee: Shell Oil Company
    Inventors: Thomas S. Dewitz, Louis H. Turner, III, Johannes E. G. Ploeg, Matheus M. Van Kessel, Andrew M. Scott, Rudi Everts
  • Process for the simultaneous removal of nitrogen and sulfur oxides from a gas stream
    Patent number: 4101634
    Abstract: A process for the simultaneous removal of nitrogen oxides and sulfur oxides from a gas stream containing oxygen, in addition to nitrogen oxides and sulfur oxides, is disclosed.
    Type: Grant
    Filed: February 4, 1977
    Date of Patent: July 18, 1978
    Assignee: Shell Oil Company
    Inventor: Johannes E. G. Ploeg