Patents by Inventor Johannes Didericus De Graaf

Johannes Didericus De Graaf 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).

  • Process for the production thermally converted light products and electricity
    Patent number: 7008460
    Abstract: Process for the production of thermally converted light products from residual feedstock and electricity from syngas obtained from thermal conversion residue as feedstock, in which process flue gas exiting from the electricity producing unit is fed through a heat recovery unit providing at least part of the heat required in the thermal conversion process.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: March 7, 2006
    Assignee: Shell Oil Company
    Inventors: Jacobus Henricus Gerardus Beurskens, Johannes Didericus De Graaf, Anthony Malcolm Rigby
  • Apparatus and process for heating steam
    Patent number: 6886501
    Abstract: An apparatus for heating steam formed from cooling water in a heat exchanger for hot gas, having a super heater arranged in the heat exchanger vessel, a process for heating steam performed in such an apparatus, and a process for gasification of a hydrocarbonaceous feedstock having such a process for heating steam.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: May 3, 2005
    Assignee: Shell Oil Company
    Inventors: Sjoerd Bosch, Franciscus Gerardus Van Dongen, Johannes Didericus De Graaf
  • Process for heating system
    Patent number: 6840199
    Abstract: A process for heating steam, in which steam is obtained by indirect heat exchange between liquid water and a hot gas; (b) the steam obtained in step (a) is heated by indirect heat exchange with the partly cooled hot gas obtained in step (a); and (c) additional water is added to the steam obtained in step (a) prior to or during heating the steam in step (b).
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: January 11, 2005
    Assignee: Shell Oil Company
    Inventors: Franciscus Gerardus Van Dongen, Johannes Didericus De Graaf
  • Process for the preparation of hydrocarbons
    Publication number: 20040220443
    Abstract: A process for the preparation of liquid hydrocarbons and a clean gas stream suitable as feed and/or fuel gas from synthesis gas involving the following steps:
    Type: Application
    Filed: February 23, 2004
    Publication date: November 4, 2004
    Inventors: Johannes Didericus De Graaf, Winnifred De Graaf
  • APPARATUS AND PROCESS FOR HEATING STEAM
    Publication number: 20040187796
    Abstract: An apparatus for heating steam formed from cooling water in a heat exchanger for hot gas, having a super heater arranged in the heat exchanger vessel, a process for heating steam performed in such an apparatus, and a process for gasification of a hydrocarbonaceous feedstock having such a process for heating steam.
    Type: Application
    Filed: May 24, 2004
    Publication date: September 30, 2004
    Inventors: Sjoerd Bosch, Franciscus Gerardus Van Dongen, Johannes Didericus de Graaf
  • Apparatus for heating steam
    Patent number: 6766772
    Abstract: An apparatus for heating steam formed from cooling water in a heat exchanger for hot gas, having a superheater arranged in the heat exchanger vessel; a process for heating steam performed in such an apparatus; and a process for gasification of a hydrocarbonaceous feedstock involving such a process for heating steam.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: July 27, 2004
    Assignee: Shell Oil Company
    Inventors: Franciscus Gerardus Van Dongen, Johannes Didericus De Graaf
  • Process for heating system
    Publication number: 20030221637
    Abstract: A process for heating steam, wherein(a) steam is obtained by indirect heat exchange between liquid water and a hot gas,(b) the steam obtained in step (a) is heated by indirect heat exchange with the partly cooled hot gas obtained in step (a),(c) additional water is added to the steam obtained in step (a) prior to or during heating the steam in step (b).
    Type: Application
    Filed: November 18, 2002
    Publication date: December 4, 2003
    Inventors: Franciscus Gerardus Van Dongen, Johannes Didericus De Graaf
  • Apparatus for heating steam
    Publication number: 20030168022
    Abstract: An apparatus for heating steam formed from cooling water in a heat exchanger for hot gas, comprising a superheater (9) arranged in the heat exchanger vessel (1), a process for heating steam performed in such an apparatus, and a process for gasification of a hydrocarbonaceous feedstock comprising such a process for heating steam.
    Type: Application
    Filed: November 18, 2002
    Publication date: September 11, 2003
    Inventors: Franciscus Gerardus Van Dongen, Johannes Didericus De Graaf
  • Process for the production of thermally converted light products and electricity
    Publication number: 20020091166
    Abstract: Process for the production of thermally converted light products from residual feedstock and electricity from syngas obtained from thermal conversion residue as feedstock, in which process flue gas exiting from the electricity producing unit is fed through a heat recovery unit providing at least part of the heat required in the thermal conversion process.
    Type: Application
    Filed: January 9, 2002
    Publication date: July 11, 2002
    Inventors: Jacobus Henricus Gerardus Beurskens, Johannes Didericus De Graaf, Anthony Malcolm Rigby