Patents by Inventor Chengwen Wayne Chung

Chengwen Wayne Chung 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).

  • Twin reflux process and configurations for improved natural gas liquids recovery
    Patent number: 7051553
    Abstract: A two-column NGL recovery plant includes an absorber (110) and a distillation column (140) in which the absorber (110) receives two cooled reflux streams, wherein one reflux stream (107) comprises a vapor portion of the NGL and wherein the other reflux stream (146) comprises a lean reflux provided by the overhead (144) of the distillation column (140). Contemplat configurations are especially advantageous in a upgrade of an existing NGL plant and typically exhibit C3 recovery of at least 99% and C2 recovery of at least 90%.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: May 30, 2006
    Assignee: Floor Technologies Corporation
    Inventors: John Mak, Curt Graham, Chengwen Wayne Chung
  • Twin reflux process and configurations for improved natural gas liquids recovery
    Publication number: 20040261452
    Abstract: A two-column NGL recovery plant includes an absorber (110) and a distillation column (140) in which the absorber (110) receives two cooled reflux streams, wherein one reflux stream (107) comprises a vapor portion of the NGL and wherein the other reflux stream (146) comprises a lean reflux provided by the overhead (144) of the distillation column (140). Contemplated configurations are especially advantageous in a upgrade of an existing NGL plant and typically exhibit C3 recovery of at least 99% and C2 recovery of at least 90%.
    Type: Application
    Filed: August 9, 2004
    Publication date: December 30, 2004
    Inventors: John Mak, Curt Graham, Chengwen Wayne Chung