Patents by Inventor Hugo Martijn Letzel

Hugo Martijn Letzel 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: 7004988
    Abstract: A gas-liquid separator having two or more vertically spaced rows of parallel horizontally spaced upwardly facing gutters, the gutters having an upwardly extending gutter wall, wherein the upper end of the gutter wall is provided with a U-turn deflector.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: February 28, 2006
    Assignee: Shell Oil Company
    Inventor: Hugo Martijn Letzel
  • Patent number: 6905112
    Abstract: A column for counter-currently contacting vapour and liquid comprising a plurality of horizontal contact trays arranged axially spaced apart in the column, each contact tray being provided with a vapour-liquid contacting area, a liquid receiving area, a downcomer area and an overflow weir between downcomer area and contact area, and which column is further provided with a plurality of horizontal separation trays, each separation tray being spatially arranged above a contact tray, said separation tray having means to separate entrained liquids from the upwardly moving vapour and means to return the thus separated liquid to a contact tray below, wherein the vapour-liquid contacting area is provided with atomiser means where in said atomiser means liquid can be dragged from a continuous liquid phase into a flow of vapour to form a dispersion of vapour and liquid droplets.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: June 14, 2005
    Assignee: Shell Oil Company
    Inventors: Gerrit Konijn, Hugo Martijn Letzel
  • Publication number: 20040107682
    Abstract: Gas-liquid separator comprising two or more vertically spaced rows (11-14) of parallel horizontally spaced upwardly facing gutters, said gutters (4) having an upwardly extending gutter wall, wherein the upper end of the gutter wall is provided with a U-turn deflector.
    Type: Application
    Filed: December 3, 2003
    Publication date: June 10, 2004
    Inventor: Hugo Martijn Letzel
  • Publication number: 20010015136
    Abstract: A column is disclosed for counter-currently contacting gas and liquid comprising a plurality of horizontal contact trays arranged axially spaced apart in the column, each contact tray being provided with passages, and which column is further provided with a plurality of horizontal separation trays, each separation tray being spatially arranged above a contact tray, said separation tray having means to separate entrained liquids from the upwardly moving vapor and means to return the thus separated liquid to a contact tray below, wherein the means to separate liquid from the vapor comprise a separation device having vapor inlet means, demister means to separate liquid from a substantially horizontal moving vapor, means to discharge the obtained vapor poor in liquids to a contact tray above the separation tray and means to collect the separated liquids at a lower end of the separating device, which collecting means are in fluid communication with the means to return the thus separated liquid to a contact tray be
    Type: Application
    Filed: January 10, 2001
    Publication date: August 23, 2001
    Inventor: Hugo Martijn Letzel