Patents by Inventor Ed Yuan

Ed Yuan 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).

  • Fluidized catalytic cracking feed nozzle
    Patent number: 7793859
    Abstract: A nozzle for the atomized spray of liquid hydrocarbon feed in a fluidized catalytic cracking apparatus having two or more slots with at least one lateral slot wall formed at an angle of from about 30 to about 60 degrees from the axis of the discharge. Also a method of spraying atomized hydrocarbon feed/steam into a fluidized catalytic cracking reactor using the nozzle described.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: September 14, 2010
    Assignee: Stone & Webster Process Technology, Inc.
    Inventors: Norman Kolb, Ed Yuan, Louis Robert Anderson, Gary Jackson
  • Operation of catalyst withdrawal wells with packing
    Publication number: 20090269252
    Abstract: An improved fluidized catalyst withdrawal well containing packing or other structured internals is disclosed for improving the flow of particular solids between two apparatus, such as between a catalyst regenerator and riser reactor.
    Type: Application
    Filed: April 23, 2008
    Publication date: October 29, 2009
    Applicant: Stone & Webster Process Technology, Inc.
    Inventors: Ed Yuan, David Banks, Gary Jackson, Eusebius Gbordzoe, Warren Letzsch
  • Riser termination device
    Patent number: 7429363
    Abstract: The present invention provides an improved separator for use in hydrocarbon cracking process.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: September 30, 2008
    Assignee: Stone & Webster Process Technology, Inc.
    Inventors: Ed Yuan, Warren Letzsch, Gary Jackson, Jim Evans, John Hood
  • Fluidized catalytic cracking feed nozzle
    Publication number: 20070246574
    Abstract: A nozzle for the atomized spray of liquid hydrocarbon feed in a fluidized catalytic cracking apparatus having two or more slots with at least one lateral slot wall formed at an angle of from about 30 to about 60 degrees from the axis of the discharge. Also a method of spraying atomized hydrocarbon feed/steam into a fluidized catalytic cracking reactor using the nozzle described.
    Type: Application
    Filed: April 11, 2006
    Publication date: October 25, 2007
    Inventors: Norman Kolb, Ed Yuan, Louis Anderson, Gary Jackson
  • Riser termination device
    Publication number: 20060177357
    Abstract: The present invention provides an improved separator for use in hydrocarbon cracking process.
    Type: Application
    Filed: February 8, 2005
    Publication date: August 10, 2006
    Inventors: Ed Yuan, Warren Letzsch, Gary Jackson, Jim Evans, John Hood