Patents by Inventor Danny Yuk-Kwan Ngan

Danny Yuk-Kwan Ngan 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: 9175229
    Abstract: The invention comprises a process for cracking liquid hydrocarbon feed to produce cracked gaseous hydrocarbons comprising feeding a liquid hydrocarbon feed stream to an olefins furnace; cracking the liquid hydrocarbon feed stream in the olefins furnace to produce a gaseous cracked effluent stream; feeding the cracked effluent from the olefins furnace to a primary transfer line heat exchanger (TLE) having two sections; injecting a first wetting fluid in a weight ratio of wetting fluid to hot gaseous effluent tangentially into the hot gaseous effluent stream at a particular location in the second section of the primary TLE; feeding the hot gaseous effluent stream exiting from the TLE to a separator; separating a separator bottoms stream comprising tar and heavier hydrocarbons and a separator product stream comprising an olefin product; and recovering an olefin product from the separator product stream.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: November 3, 2015
    Assignee: Shell Oil Company
    Inventors: Arthur James Baumgartner, A. Haluk Bilgic, Danny Yuk Kwan Ngan
  • Publication number: 20130001132
    Abstract: The invention comprises a process for cracking liquid hydrocarbon feed to produce cracked gaseous hydrocarbons comprising feeding a liquid hydrocarbon feed stream to an olefins furnace; cracking the liquid hydrocarbon feed stream in the olefins furnace to produce a gaseous cracked effluent stream; feeding the cracked effluent from the olefins furnace to a primary transfer line heat exchanger (TLE) having two sections; injecting a first wetting fluid in a weight ratio of wetting fluid to hot gaseous effluent tangentially into the hot gaseous effluent stream at a particular location in the second section of the primary TLE; feeding the hot gaseous effluent stream exiting from the TLE to a separator; separating a separator bottoms stream comprising tar and heavier hydrocarbons and a separator product stream comprising an olefin product; and recovering an olefin product from the separator product stream.
    Type: Application
    Filed: January 25, 2011
    Publication date: January 3, 2013
    Inventors: Arthur James Baumgartner, A. Haluk Bilgic, Danny Yuk Kwan Ngan
  • Patent number: 8083932
    Abstract: A process for making lower olefins from a wide boiling range hydrocarbon feed by use of a combination of one or more vapor/liquid separation devices, and then pyrolytically cracking the vapor phase in separate sets of pyrolysis radiant tubes, thereby producing a higher level of lower olefin product.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: December 27, 2011
    Assignee: Shell Oil Company
    Inventors: Arthur James Baumgartner, Robert Lawrence Blackbourn, Danny Yuk Kwan Ngan
  • Patent number: 8070938
    Abstract: A contactor/separator is formed from a vessel; an inlet for receiving a vapor/liquid mixture; an inlet for receiving a superheated vapor; a hub located within the vessel, the hub including a plurality of vanes for imparting a centrifugal motion to the vapor/liquid mixture or the superheated vapor; an outlet in a bottom of the vessel for removing liquid; and an outlet for removing vapor from the vessel. A method is also provided for heating and separating liquid and vapor from a hydrocarbon feedstock comprising introducing a hydrocarbon feedstock into a contactor/separator: introducing a superheated vapor into the contactor/separator such that it contacts and vaporizes a portion of the feedstock within the contactor/separator; separating unvaporized feedstock from vaporized feedstock in the contactor/separator; removing the vaporized feedstock and the superheated vapor through a first outlet; and removing the unvaporized feedstock through a second outlet.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: December 6, 2011
    Assignee: Shell Oil Company
    Inventors: Louis Edward Stein, Danny Yuk Kwan Ngan, Arthur James Baumgartner, Karl Gregory Anderson, Raul Jasso Garcia, Sr., Richard Rodriguez
  • Publication number: 20110036751
    Abstract: A contactor/separator is formed from a vessel; an inlet for receiving a vapor/liquid mixture; an inlet for receiving a superheated vapor; a hub located within the vessel, the hub including a plurality of vanes for imparting a centrifugal motion to the vapor/liquid mixture or the superheated vapor; an outlet in a bottom of the vessel for removing liquid; and an outlet for removing vapor from the vessel. A method is also provided for heating and separating liquid and vapor from a hydrocarbon feedstock comprising introducing a hydrocarbon feedstock into a contactor/separator: introducing a superheated vapor into the contactor/separator such that it contacts and vaporizes a portion of the feedstock within the contactor/separator; separating unvaporized feedstock from vaporized feedstock in the contactor/separator; removing the vaporized feedstock and the superheated vapor through a first outlet; and removing the unvaporized feedstock through a second outlet.
    Type: Application
    Filed: October 25, 2010
    Publication date: February 17, 2011
    Inventors: Louis Edward STEIN, Danny Yuk Kwan Ngan, Arthur James Baumgartner, Karl Gregory Anderson, Raul Jasso Garcia, SR., Richard Rodriguez
  • Patent number: 7862651
    Abstract: A contactor/separator is formed from a vessel; an inlet for receiving a vapor/liquid mixture; an inlet for receiving a superheated vapor; a hub located within the vessel, the hub including a plurality of vanes for imparting a centrifugal motion to the vapor/liquid mixture or the superheated vapor; an outlet in a bottom of the vessel for removing liquid; and an outlet for removing vapor from the vessel. A method is also provided for heating and separating liquid and vapor from a hydrocarbon feedstock comprising introducing a hydrocarbon feedstock into a contactor/separator: introducing a superheated vapor into the contactor/separator such that it contacts and vaporizes a portion of the feedstock within the contactor/separator; separating unvaporized feedstock from vaporized feedstock in the contactor/separator; removing the vaporized feedstock and the superheated vapor through a first outlet; and removing the unvaporized feedstock through a second outlet.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: January 4, 2011
    Assignee: Shell Oil Company
    Inventors: Louis Edward Stein, Danny Yuk Kwan Ngan, Arthur James Baumgartner, Karl Gregory Anderson, Raul Jasso Garcia, Sr., Richard Rodriguez
  • Patent number: 7829752
    Abstract: A process for making lower olefins from a heavy hydrocarbon feed by use of a combination of thermal cracking and vapor-liquid separation, and, then, pyrolytically cracking the light fraction of the thermally-cracked heavy hydrocarbon feed to thereby produce a lower olefin product.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: November 9, 2010
    Assignee: Shell Oil Company
    Inventors: Arthur James Baumgartner, Danny Yuk-Kwan Ngan
  • Patent number: 7718839
    Abstract: A process for making lower olefins from a heavy hydrocarbon feed by use of a combination of two vapor-liquid separation devices, and, then, pyrolytically cracking the light fraction of the heavy hydrocarbon feed to thereby produce a lower olefin product.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: May 18, 2010
    Assignee: Shell Oil Company
    Inventors: Arthur James Baumgartner, Danny Yuk-Kwan Ngan
  • Publication number: 20090054716
    Abstract: A process for making lower olefins from a wide boiling range hydrocarbon feed by use of a combination of one or more vapor/liquid separation devices, and then pyrolytically cracking the vapor phase in separate sets of pyrolysis radiant tubes, thereby producing a higher level of lower olefin product.
    Type: Application
    Filed: August 21, 2008
    Publication date: February 26, 2009
    Inventors: Arthur James BAUMGARTNER, Robert Lawrence Blackbourn, Danny Yuk Kwan Ngan
  • Publication number: 20080251419
    Abstract: A contactor/separator is formed from a vessel; an inlet for receiving a vapor/liquid mixture; an inlet for receiving a superheated vapor; a hub located within the vessel, the hub including a plurality of vanes for imparting a centrifugal motion to the vapor/liquid mixture or the superheated vapor; an outlet in a bottom of the vessel for removing liquid; and an outlet for removing vapor from the vessel. A method is also provided for heating and separating liquid and vapor from a hydrocarbon feedstock comprising introducing a hydrocarbon feedstock into a contactor/separator: introducing a superheated vapor into the contactor/separator such that it contacts and vaporizes a portion of the feedstock within the contactor/separator; separating unvaporized feedstock from vaporized feedstock in the contactor/separator; removing the vaporized feedstock and the superheated vapor through a first outlet; and removing the unvaporized feedstock through a second outlet.
    Type: Application
    Filed: December 10, 2007
    Publication date: October 16, 2008
    Inventors: Louis Edward Stein, Danny Yuk Kwan Ngan, Arthur James Baumgartner, Karl Gregory Anderson, Raul Jasso Garcia, Richard Rodriguez
  • Publication number: 20070232846
    Abstract: A process for making lower olefins from a heavy hydrocarbon feed by use of a combination of thermal cracking and vapor-liquid separation, and, then, pyrolytically cracking the light fraction of the thermally-cracked heavy hydrocarbon feed to thereby produce a lower olefin product.
    Type: Application
    Filed: March 22, 2007
    Publication date: October 4, 2007
    Inventors: Arthur James Baumgartner, Danny Yuk-Kwan Ngan
  • Patent number: 7238847
    Abstract: A process and apparatus for determining the hydrogen-to-carbon ratio of the liquid fraction of a pyrolysis product by determining the hydrogen-to-carbon ratio of the pyrolysis product gas fraction and subtracting the thus determined value from the determined hydrogen-to-carbon of the hydrocarbon feed to the pyrolysis furnace. The determined value for the hydrogen-to-carbon ratio of the liquid fraction is used as a measure of cracking severity and in the control of the pyrolysis furnace in response to differences between the desired and actual hydrogen-to-carbon ratio of the liquid fraction.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: July 3, 2007
    Assignee: Shell Oil Company
    Inventor: Danny Yuk-Kwan Ngan
  • Publication number: 20040122276
    Abstract: A process and apparatus for determining the hydrogen-to-carbon ratio of the liquid fraction of a pyrolysis product by determining the hydrogen-to-carbon ratio of the pyrolysis product gas fraction and subtracting the thus determined value from the determined hydrogen-to-carbon of the hydrocarbon feed to the pyrolysis furnace. The determined value for the hydrogen-to-carbon ratio of the liquid fraction is used as a measure of cracking severity and in the control of the pyrolysis furnace in response to differences between the desired and actual hydrogen-to-carbon ratio of the liquid fraction.
    Type: Application
    Filed: December 23, 2002
    Publication date: June 24, 2004
    Inventor: Danny Yuk-Kwan Ngan
  • Patent number: 5840582
    Abstract: In a first embodiment of the invention, a method for determining the hydrogen-to-carbon ratio of a liquid hydrocarbon fraction is presented. A sample of the liquid fraction is subjected to an ultra-violet absorption analysis. The results of the analysis correlate directly to the hydrogen-to-carbon ratio of the hydrocarbon fraction and, with a knowledge of this correlation, the hydrogen-to-carbon ratio of the sample under analysis may be determined. Another embodiment provides a method for monitoring the performance of a process for the preparation of olefins by the thermal cracking of a hydrocarbon feedstock. A liquid fraction is recovered from the product of the thermal cracking and subjected to an ultra-violet absorption analysis. The result of the analysis correlates directly to the hydrogen-to-carbon ratio of the product, which in turn correlates to the cracking severity being applied in the thermal cracking process.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 24, 1998
    Assignee: Shell Oil Company
    Inventor: Danny Yuk-Kwan Ngan