Patents by Inventor Edwin P. Boldingh

Edwin P. Boldingh 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: 7393989
    Abstract: A catalyst, a process for using the catalyst whereby the catalyst effectively transalkylates C7, C9, and C10 aromatics to C8 aromatics are disclosed. The catalyst comprises a support such as mordenite plus a metal component. The catalyst provides an enhanced life and activity for carrying out the transalkylation reactions at relatively low temperatures. This is achieved by reducing the maximum particle diameter of cylindrical pellets to 1/32 inch (0.08 cm) or a trilobe to 1/16 inch (0.16 cm).
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: July 1, 2008
    Assignee: UOP LLC
    Inventors: Antoine Negiz, Edwin P. Boldingh, Gregory J. Gajda, Sergey V. Gurevich
  • Patent number: 7381674
    Abstract: Transalkylation catalysts comprising acidic molecular sieve, iridium and germanium have good activities and attenuate aromatic ring saturation and lights co-production where high atomic ratios of germanium to iridium are present.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: June 3, 2008
    Assignee: UOP LLC
    Inventors: Edwin P. Boldingh, Maureen L. Bricker, Robert B. Larson, Frank S. Modica, James E. Rekoske
  • Patent number: 7378365
    Abstract: Transalkylation catalysts comprising acidic molecular sieve, rhenium, tin and germanium have good activities and attenuate aromatic ring saturation and lights co-production.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: May 27, 2008
    Assignee: UOP LLC
    Inventors: Edwin P. Boldingh, Maureen L. Bricker, Robert B. Larson, Frank S. Modica, James E. Rekoske
  • Publication number: 20080027258
    Abstract: Transalkylation catalysts comprising acidic molecular sieve, rhenium, tin and germanium have good activities and attenuate aromatic ring saturation and lights co-production.
    Type: Application
    Filed: July 28, 2006
    Publication date: January 31, 2008
    Inventors: Edwin P. Boldingh, Maureen L. Bricker, Robert B. Larson, Frank S. Modica, James E. Rekoske
  • Publication number: 20080026931
    Abstract: Transalkylation catalysts comprising acidic molecular sieve, rhenium, tin and germanium have good activities and attenuate aromatic ring saturation and lights co-production.
    Type: Application
    Filed: July 28, 2006
    Publication date: January 31, 2008
    Inventors: Edwin P Boldingh, Maureen L. Bricker, Robert B. Larson, Frank S. Modica, James E. Rekoske
  • Patent number: 7314601
    Abstract: Processes for making xylene isomer use integrated transalkylation and isomerization reaction zones to enhance xylene recovery and enable reduction in capital costs and energy consumption.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: January 1, 2008
    Assignee: UOP LLC
    Inventors: Antoine Negiz, James E. Rekoske, Edwin P. Boldingh
  • Patent number: 7307034
    Abstract: A transalkylation process for reacting carbon number nine aromatics with toluene to form carbon number eight aromatics such as para-xylene is herein disclosed. The process is based on the discovery that deactivating contaminants present in typical hydrocarbon feeds, such as chlorides, can be removed with an alumina guard bed prior to contacting with a transalkylation catalyst. Effective transalkylation catalysts have a solid-acid component such as mordenite, and a metal component such as rhenium. The invention is embodied in a process, a catalyst system, and an apparatus. The invention provides for longer catalyst cycle life when processing aromatics under commercial transalkylation conditions.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: December 11, 2007
    Assignee: UOP LLC
    Inventors: Antoine Negiz, Edwin P. Boldingh, Sergio A. Pischek
  • Patent number: 7273828
    Abstract: A process for preparing a transalkylation catalyst, the catalyst itself, and a transalkylation process for using the catalyst are herein disclosed. The catalyst comprises rhenium metal on a solid-acid support such as mordenite, which has been treated with a sulfur-based agent. Such treatment reduces the amount of methane produced by metal hydrogenolysis in a transalkylation process wherein heavy aromatics like A9+ are reacted with toluene to produce xylenes. Reduced methane production relative to total light ends gas production results in lower hydrogen consumption and lower reactor exotherms.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: September 25, 2007
    Assignee: UOP LLC
    Inventors: Edwin P. Boldingh, Antoine Negiz
  • Patent number: 7265252
    Abstract: A process for the conversion of a hydrocarbon feedstock to produce xylene compounds. The feedstock is selectively hydrocracked and introduced into a transalkylation zone with a hydrocarbonaceous stream rich in benzene, toluene and C9+ hydrocarbons.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: September 4, 2007
    Assignee: UOP LLC
    Inventors: Stanley J. Frey, Suheil F. Abdo, Antoine Negiz, Edwin P. Boldingh, Vasant P. Thakkar, Lubo Zhou
  • Patent number: 7230152
    Abstract: An improved process is disclosed for the selective disproportionation of toluene. The process preferably uses a disproportionation catalyst comprising a pentasil type zeolite such as MFI that is bound with aluminum-phosphate. Running the process at a toluene conversion greater than about 30 wt-% and at a hydrogen-to-hydrocarbon ratio less than 3.0, and especially a ratio of 0.1 to 1.0, improves the maximum yield of para-xylene. Optional periodic rejuvenation by increasing the hydrogen-to-hydrocarbon ratio removes some carbon deposits and restores catalyst activity. An inert diluent gas assists in selective pre-coking of the catalyst as well.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: June 12, 2007
    Assignee: UOP LLC
    Inventor: Edwin P. Boldingh
  • Patent number: 7220885
    Abstract: A process for preparing a transalkylation catalyst, the catalyst itself, and a transalkylation process for using the catalyst are herein disclosed. The catalyst comprises rhenium metal on a solid-acid support such as mordenite, which has been treated with a sulfur-based agent. Such treatment reduces the amount of methane produced by metal hydrogenolysis in a transalkylation process wherein heavy aromatics like A9+ are reacted with toluene to produce xylenes. Reduced methane production relative to total light ends gas production results in lower hydrogen consumption and lower reactor exotherms.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: May 22, 2007
    Assignee: UOP LLC
    Inventors: Edwin P. Boldingh, Antoine Negiz, Gregory F. Maher, Paula L. Bogdan, Dean E. Rende
  • Patent number: 7202189
    Abstract: A catalyst, a process for using the catalyst whereby the catalyst effectively transalkylates C7, C9, and C10 aromatics to C8 aromatics are disclosed. The catalyst comprises a support such as mordenite plus a metal component. The catalyst provides an enhanced life and activity for carrying out the transalkylation reactions at relatively low temperatures. This is achieved by reducing the maximum particle diameter of cylindrical pellets to 1/32 inch (0.08 cm) or a trilobe to 1/16 inch (0.16 cm).
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: April 10, 2007
    Assignee: UOP LLC
    Inventors: Antoine Negiz, Edwin P. Boldingh, Gregory J. Gajda, Sergey V. Gurevich
  • Patent number: 7154014
    Abstract: A transalkylation process for reacting carbon number nine aromatics with toluene to form carbon number eight aromatics such as para-xylene is herein disclosed. The process is based on the discovery that deactivating contaminants present in typical hydrocarbon feeds, such as chlorides, can be removed with an alumina guard bed prior to contacting with a transalkylation catalyst. Effective transalkylation catalysts have a solid-acid component such as mordenite, and a metal component such as rhenium. The invention is embodied in a process, a catalyst system, and an apparatus. The invention provides for longer catalyst cycle life when processing aromatics under commercial transalkylation conditions.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: December 26, 2006
    Assignee: UOP LLC
    Inventors: Antoine Negiz, Edwin P. Boldingh, Sergio A. Pischek
  • Patent number: 6972348
    Abstract: A catalyst, and a process for using the catalyst, that effectively converts and transalkylates indane and C10 and heavier polycyclic aromatics into C8 aromatics is herein disclosed. The catalyst comprises a solid-acid support such as mordenite plus a metal component such as rhenium. The catalyst provides excellent conversion of such heavy aromatic species as naphthalene, which is also observed by a decrease in the ending-boiling-point of a hydrocarbon stream passed over the catalyst. The same catalyst is also effective for transalkylation of lighter aromatics, thus yielding a valuable xylenes product stream out of the process.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: December 6, 2005
    Assignee: UOP LLC
    Inventors: Antoine Negiz, Edwin P. Boldingh, Frank S. Modica, Gregory F. Maher
  • Patent number: 6815570
    Abstract: A catalyst, a process for using the catalyst whereby the catalyst effectively transalkylates C7, C9, and C10 aromatics to C8 aromatics are disclosed. The catalyst comprises a support such as mordenite plus a metal component. The catalyst provides an enhanced life and activity for carrying out the transalkylation reactions at relatively low temperatures. This is achieved by reducing the maximum particle diameter of cylindrical pellets to {fraction (1/32)} inch (0.08 cm) or a trilobe to {fraction (1/16)} inch (0.16 cm).
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: November 9, 2004
    Assignee: UOP LLC
    Inventors: Antoine Negiz, Edwin P. Boldingh, Gregory J. Gajda, Surgey V. Gurevich
  • Patent number: 6429347
    Abstract: An improved process is disclosed for the selective disproportionation of toluene. The process preferably uses a disproportionation catalyst comprising MFI bound with alumina phosphate. Running the process at a hydrogen to hydrocarbon ratio between 0.2 to 0.5 improves the yield of para-xylene. Optional periodic rejuvenation by increasing the hydrogen to hydrocarbon ratio removes some carbon deposits and restores catalyst activity.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: August 6, 2002
    Assignee: UOP LLC
    Inventor: Edwin P. Boldingh
  • Patent number: 6359185
    Abstract: An improved process is disclosed for the selective disproportionation of toluene. The process uses a zeolitic catalyst which is oil-dropped in an amorphous aluminum phosphate binder and optionally is selectively precoked prior to toluene disproportionation. The catalyst and process provide enhanced selectivity for the production of paraxylene.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: March 19, 2002
    Assignee: UOP LLC
    Inventors: Edwin P. Boldingh, Jennifer S. Holmgren, Gregory J. Gajda, Michael H. Quick
  • Patent number: 6239056
    Abstract: An improved catalyst and process are disclosed for the selective disproportionation of toluene. The process uses a zeolitic catalyst which is oil-dropped in an aluminum phosphate binder and has an X-ray diffraction pattern showing characteristic intensities at specified Bragg angles. Optionally, the catalyst is selectively precoked prior to toluene disproportionation. The catalyst and process provide improved selectivity for the production of paraxylene.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: May 29, 2001
    Assignee: UOP LLC
    Inventors: Gregory J. Gajda, Edwin P. Boldingh, Jennifer S. Holmgren
  • Patent number: 6191331
    Abstract: An improved process is disclosed for the selective disproportionation of toluene. The process uses a zeolitic catalyst which is selectively precoked prior to toluene disproportionation in a manner to avoid a large temperature rise across a bed of the catalyst during precoking. The catalyst and process provide enhanced selectivity for the production of paraxylene.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: February 20, 2001
    Assignee: UOP LLC
    Inventor: Edwin P. Boldingh
  • Patent number: 6114592
    Abstract: An improved process combination is disclosed for the selective disproportionation of toluene. The combination comprises selective hydrogenation of a toluene feedstock followed by disproportionation using a zeolitic catalyst which is oil-dropped in an aluminum phosphate binder to achieve a high yield of paraxylene. Optionally, the catalyst is selectively precoked prior to toluene disproportionation. The catalyst and process provide improved selectivity for the production of paraxylene.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: September 5, 2000
    Assignee: UOP LLC
    Inventors: Gregory J. Gajda, Edwin P. Boldingh