Patents by Inventor Teunis Van Herwijnen

Teunis Van Herwijnen 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: 4146370
    Abstract: A novel partial combustion process and apparatus therefor are disclosed wherein coal powder is passed from a fluidization vessel operated at high pressure to a gasification reactor operated at a substantially constant small pressure increment below the pressure of the fluidization vessel. Coal powder solids are introduced into the fluidization vessel through coal powder supply means while the fluidization gas is introduced into the fluidization vessel to fluidize the coal powder solids in the fluidization vessel. The fluidized powder is discharged through novel passage means in a direction perpendicular to the direction of flow of the fluidization gas flowing into the vessel, so that the fluidized coal powder is concentrated during flow and is uniformly dispersed, whereby the transfer rate of the coal powder is substantially increased, thereby making it possible to use smaller sizes of equipment for the same volumes handled.
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: March 27, 1979
    Assignee: Shell Internationale Research Maatschappij B.V.
    Inventors: Teunis VAN Herwijnen, Cornelis J. Paul
  • Patent number: 3992784
    Abstract: The invention relates to a process for the upgrading of solid material containing bound water and free or chemically bound carbon, in particular brown coal, which process involves a heat treatment at a temperature of at least C and at a pressure that is higher than the vapor pressure of water at that temperature.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: November 23, 1976
    Assignee: Shell Oil Company
    Inventors: Eke Verschuur, Berend P. Ter Meulen, Teunis Van Herwijnen, Johannes Boom