Patents by Inventor Theodorus Maesen

Theodorus Maesen 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).

  • Publication number: 20200291305
    Abstract: Processes herein may be used to thermally crack various hydrocarbon feeds, and may eliminate the refinery altogether while making the crude to chemicals process very flexible in terms of crude. In embodiments herein, crude is progressively separated into at least light and heavy fractions. Depending on the quality of the light and heavy fractions, these are routed to one of three upgrading operations, including a fixed bed hydroconversion unit, a fluidized catalytic conversion unit, or a residue hydrocracking unit that may utilize an ebullated bed reactor.
    Type: Application
    Filed: March 16, 2020
    Publication date: September 17, 2020
    Applicants: LUMMUS TECHNOLOGY LLC, Saudi Aramco Technologies Company, Chevron Lummus Global LLC
    Inventors: Ujjal Mukherjee, Kareemuddin Shaik, Pedro Santos, Essam Abdullah Al-Sayed, Theodorus Maesen, Mazin Tamimi, Julie Chabot, Ibrahim Abba, Kandasamy Sundaram, Sami Barnawi, Ronald Venner
  • Publication number: 20200291311
    Abstract: Processes herein may be used to thermally crack various hydrocarbon feeds, and may eliminate the refinery altogether while making the crude to chemicals process very flexible in terms of crude. In embodiments herein, crude is progressively separated into at least light and heavy fractions. Depending on the quality of the light and heavy fractions, these are routed to one of three upgrading operations, including a fixed bed hydroconversion unit, a fluidized catalytic conversion unit, or a residue hydrocracking unit that may utilize an ebullated bed reactor. Products from the upgrading operations may be used as feed to a steam cracker.
    Type: Application
    Filed: March 16, 2020
    Publication date: September 17, 2020
    Applicants: LUMMUS TECHNOLOGY LLC, Saudi Aramco Technologies Company, Chevron Lummus Global LLC
    Inventors: Essam Abdullah Al-Sayed, Ujjal Mukherjee, Kareemuddin Shaik, Pedro Santos, Theodorus Maesen, Mazin Tamimi, Julie Chabot, Ibrahim Abba, Kandasamy Sundaram, Sami Barnawi, Ronald Venner, Raghu Narayan, Meredith Lansdown
  • Patent number: 9669396
    Abstract: This invention is directed to hydrocracking catalysts and hydrocracking processes employing a magnesium aluminosilicate clay and a zeolite. The magnesium aluminosilicate clay has a characteristic 29Si NMR spectrum. The magnesium aluminosilicate clay is the product of a series of specific reaction steps. The resulting magnesium aluminosilicate clay combines high surface area and activity for use in hydrocracking catalysts and processes.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: June 6, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Darren P. Fong
  • Patent number: 9187702
    Abstract: The present invention is directed to a hydroprocessing catalyst containing at least one catalyst support, one or more metals, optionally one or more molecular sieves, optionally one or more promoters, wherein deposition of at least one of the metals is achieved in the presence of a modifying agent.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: November 17, 2015
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Bi-Zeng Zhan, Theodorus Maesen, Janine Lichtenberger, Andrew Rainis, Hye-Kyung Timken
  • Patent number: 9168519
    Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant as metal residuals. In the present disclosure, the metals can be recovered in a chemical precipitation step, wherein the supernatant is mixed with at least one of an acid, a sulfide-containing compound, a base, and combinations thereof to precipitate at least 50% of metal ions in at least one of the metal residuals, wherein the precipitation is carried out at a pre-select pH. The precipitate is isolated and recovered, yielding an effluent stream. The precipitate and/or the effluent stream can be further treated to form at least a metal precursor feed which can be used in the co-precipitation reaction. The process generates an effluent to waste treatment containing less than 50 ppm metals.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: October 27, 2015
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Alexander E. Kuperman, Theodorus Maesen, Dennis Dykstra
  • Patent number: 8716164
    Abstract: This invention is directed to hydrodemetallization catalysts and hydrodemetallization processes employing a magnesium aluminosilicate clay. The magnesium aluminosilicate clay has a characteristic 29Si NMR spectrum. The magnesium aluminosilicate clay is the product of a series of specific reaction steps. Briefly, the magnesium aluminosilicate clay employed in the catalyst and process of the invention is made by combining a silicon component, an aluminum component, and a magnesium component, under aqueous conditions and at an acidic pH, to form a first reaction mixture and subsequently the pH of the first reaction mixture is adjusted to greater than about 7.5 to form a second reaction mixture. The second reaction mixture is allowed to react under conditions sufficient to form the magnesium aluminosilicate clay. The resulting magnesium aluminosilicate clay combines high surface area and activity for use in hydrodemetallization catalysts and processes.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: May 6, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Christopher J. Dillon, Theodorus Maesen, Alexander E. Kuperman
  • Patent number: 8703641
    Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds end up in the supernatant. The metals can be recovered via any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate an effluent stream containing less than 50 mole % of metal ions in at least one of the metal residuals, and for at least one of the metal residuals recovered as a metal precursor feed for use in the co-precipitation reaction. In one embodiment, the resin functions as an anion exchange resin with an acidic supernatant to recover Group VIB metal residuals, and a cation exchange resin with a basic supernatant to recover Promoter metal residuals. An effluent stream from the process to waste treatment contains less than 50 ppm metals.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: April 22, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Alexander E. Kuperman, Theodorus Maesen, Dennis Dykstra, Ping Wang, Soy Uckung
  • Publication number: 20140057775
    Abstract: This invention is directed to hydrocracking catalysts and hydrocracking processes employing a magnesium aluminosilicate clay and a zeolite. The magnesium aluminosilicate clay has a characteristic 29Si NMR spectrum. The magnesium aluminosilicate clay is the product of a series of specific reaction steps. The resulting magnesium aluminosilicate clay combines high surface area and activity for use in hydrocracking catalysts and processes.
    Type: Application
    Filed: November 4, 2013
    Publication date: February 27, 2014
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Darren P. Fong
  • Patent number: 8658558
    Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant. In the present disclosure, the metals can be recovered in an electro-coagulation reactor, wherein portion of the metal residuals in the supernatant reacts with the electrodes to form a slurry containing insoluble metal compounds. The insoluble metal compounds are isolated and recovered, forming an effluent stream. The insoluble metal compounds and/or the effluent stream can be further treated to form at least a metal precursor feed which can be used in the co-precipitation reaction.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: February 25, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Dennis Dykstra
  • Patent number: 8652447
    Abstract: The invention provides for cosmetic and personal care compositions comprising a synthetic magnesium aluminosilicate clay. The synthetic magnesium aluminosilicate clay is formed at ambient pressure by a series of reaction steps and a pH change from acidic pH to basic pH. The characteristics of the magnesium aluminosilicate clay, including platelet size, degree of stacking, and porosity can be tuned depending on the cosmetic or personal care product desired. In addition, these cosmetic and personal care compositions optionally include one or more of the following components: odor controlling agents, skin protectants, diluents, lipophilic skin health benefit agents, sunscreens, humectants, emollients, slip compounds, and moisturizers.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: February 18, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Ibrahim J. Uckung
  • Patent number: 8603932
    Abstract: This invention is directed to hydrocracking catalysts and hydrocracking processes employing a magnesium aluminosilicate clay. The magnesium aluminosilicate clay has a characteristic 29Si NMR spectrum. The magnesium aluminosilicate clay is the product of a series of specific reaction steps. Briefly, the magnesium aluminosilicate clay employed in the catalyst and process of the present invention is made by combining a silicon component, an aluminum component, and a magnesium component, under aqueous conditions and at an acidic pH, to form a first reaction mixture and subsequently the pH of the first reaction mixture is adjusted to greater than about 7.5 to form a second reaction mixture. The second reaction mixture is allowed to react under conditions sufficient to form the magnesium aluminosilicate clay. The resulting magnesium aluminosilicate clay combines high surface area and activity for use in hydrocracking catalysts and processes.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: December 10, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Darren P. Fong
  • Patent number: 8586500
    Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant. In the present disclosure, the metals can be recovered via any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate an effluent stream containing less than 50 mole % of metal ions in at least one of the metal residuals, and for at least one of the metal residuals is recovered as a metal precursor feed, which can be recycled for use in the co-precipitation reaction. An effluent stream from the process to waste treatment contains less than 50 ppm metal ions.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: November 19, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Alexander E. Kuperman, Theodorus Maesen, Dennis Dykstra
  • Patent number: 8575061
    Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of metal ions in at least one of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant as metal residuals. In the present disclosure, the metals can be recovered via ion-exchange, wherein an exchange resin is provided for a portion of the metal ions in the supernatant to be exchanged and bound onto the resin. The previously resin-bound metals can be subsequently recovered, or the effluent stream for the exchange resin column can also be recovered, forming at least a metal precursor feed which can be used in the co-precipitation reaction.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: November 5, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Alexander E. Kuperman, Theodorus Maesen, Dennis Dykstra
  • Patent number: 8575062
    Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and stay in the supernatant. In one embodiment, at least a precipitant is added to the product mixture at a molar ratio of precipitant to metal residuals in the supernatant ranging from 1.5:1 to 20:1 to precipitate at least 50 mole % of metal ions in the residuals forming additional catalyst precursor. The remaining metal residuals can be recovered via any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate an effluent stream containing less than 50 mole % of at least one of the metal residuals. In one embodiment, at least one of the metal residuals is recovered and recycled for use as a metal precursor feed in the co-precipitation reaction.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: November 5, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Alexander E. Kuperman, Theodorus Maesen, Dennis Dykstra
  • Patent number: 8563456
    Abstract: This invention is directed to hydrodemetallization catalysts and hydrodemetallization processes employing a magnesium aluminosilicate clay. The magnesium aluminosilicate clay has a characteristic 29Si NMR spectrum. The magnesium aluminosilicate clay is the product of a series of specific reaction steps. Briefly, the magnesium aluminosilicate clay employed in the catalyst and process of the invention is made by combining a silicon component, an aluminum component, and a magnesium component, under aqueous conditions and at an acidic pH, to form a first reaction mixture and subsequently the pH of the first reaction mixture is adjusted to greater than about 7.5 to form a second reaction mixture. The second reaction mixture is allowed to react under conditions sufficient to form the magnesium aluminosilicate clay. The resulting magnesium aluminosilicate clay combines high surface area and activity for use in hydrodemetallization catalysts and processes.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: October 22, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Christopher J. Dillon, Theodorus Maesen, Alexander E. Kuperman
  • Patent number: 8518239
    Abstract: This invention is directed to hydrocracking catalysts and hydrocracking processes employing a magnesium aluminosilicate clay. The magnesium aluminosilicate clay has a characteristic 29Si NMR spectrum. The magnesium aluminosilicate clay is the product of a series of specific reaction steps. Briefly, the magnesium aluminosilicate clay employed in the catalyst and process of the present invention is made by combining a silicon component, an aluminum component, and a magnesium component, under aqueous conditions and at an acidic pH, to form a first reaction mixture and subsequently the pH of the first reaction mixture is adjusted to greater than about 7.5 to form a second reaction mixture. The second reaction mixture is allowed to react under conditions sufficient to form the magnesium aluminosilicate clay. The resulting magnesium aluminosilicate clay combines high surface area and activity for use in hydrocracking catalysts and processes.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: August 27, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Darren P. Fong
  • Patent number: 8383543
    Abstract: The invention relates to a bulk multi-metallic catalyst for hydrotreating heavy oil feeds and to a method for preparing the catalyst. The bulk multi-metallic catalyst is prepared by sulfiding a catalyst precursor having a poorly crystalline structure with disordered stacking layers, with a type IV adsorption-desorption isotherms of nitrogen with a hysteresis starting point value of about 0.35, for a sulfided catalyst that will facilitate the reactant's and product's diffusion in catalytic applications. In another embodiment, the precursor is characterized as having a type H3 hysteresis loop. In a third embodiment, the hysteresis loop is characterized as having a well developed plateau above P/Po of about 0.55. The mesapores of the precursor can be adjustable or tunable.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: February 26, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Dennis Dykstra
  • Publication number: 20120122661
    Abstract: This invention is directed to hydrocracking catalysts and hydrocracking processes employing a magnesium aluminosilicate clay. The magnesium aluminosilicate clay has a characteristic 29Si NMR spectrum. The magnesium aluminosilicate clay is the product of a series of specific reaction steps. Briefly, the magnesium aluminosilicate clay employed in the catalyst and process of the present invention is made by combining a silicon component, an aluminum component, and a magnesium component, under aqueous conditions and at an acidic pH, to form a first reaction mixture and subsequently the pH of the first reaction mixture is adjusted to greater than about 7.5 to form a second reaction mixture. The second reaction mixture is allowed to react under conditions sufficient to form the magnesium aluminosilicate clay. The resulting magnesium aluminosilicate clay combines high surface area and activity for use in hydrocracking catalysts and processes.
    Type: Application
    Filed: January 5, 2012
    Publication date: May 17, 2012
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Darren P. Fong
  • Publication number: 20120122656
    Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and stay in the supernatant. In one embodiment, at least a precipitant is added to the product mixture at a molar ratio of precipitant to metal residuals in the supernatant ranging from 1.5:1 to 20:1 to precipitate at least 50 mole % of metal ions in the residuals forming additional catalyst precursor. The remaining metal residuals can be recovered via any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate an effluent stream containing less than 50 mole % of at least one of the metal residuals. In one embodiment, at least one of the metal residuals is recovered and recycled for use as a metal precursor feed in the co-precipitation reaction.
    Type: Application
    Filed: October 18, 2011
    Publication date: May 17, 2012
    Inventors: Alexander E. Kuperman, Theodorus Maesen, Dennis Dykstra
  • Publication number: 20120122653
    Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant. In the present disclosure, the metals can be recovered in an electro-coagulation reactor, wherein portion of the metal residuals in the supernatant reacts with the electrodes to form a slurry containing insoluble metal compounds. The insoluble metal compounds are isolated and recovered, forming an effluent stream. The insoluble metal compounds and/or the effluent stream can be further treated to form at least a metal precursor feed which can be used in the co-precipitation reaction.
    Type: Application
    Filed: October 18, 2011
    Publication date: May 17, 2012
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Dennis Dykstra