Patents by Inventor Sergio Mohedas

Sergio Mohedas 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: 10010842
    Abstract: A catalyst loading system comprising: a vessel comprising at least one gas distribution nozzle at or near the bottom of the vessel, a top fluid distributor located at or near the top of the vessel, a catalyst inlet through which catalyst is introduced into the vessel, a first contact point at which catalyst introduced into the vessel first contacts the contents of the vessel, and a discharge outlet whereby catalyst exits the vessel. Methods of preparing catalyst slurry for introduction into a downstream reactor or in-situ activation within the vessel utilizing the catalyst loading system are also disclosed.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: July 3, 2018
    Assignee: RES USA, LLC
    Inventors: Mark Anselmo, Derek Bridgford, Nick Cozzi, Sergio Mohedas, Matt Greer, Paul Morton
  • Patent number: 9649610
    Abstract: A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: May 16, 2017
    Assignee: RES USA, LLC
    Inventors: Harold A. Wright, Belma Demirel, Sergio Mohedas, Bahman Rejai, Ray J. Huang, Deena Ferdous, Jesse W. Taylor, Dawid J. Duvenhage, Sara L. Rolfe
  • Patent number: 9522372
    Abstract: A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: December 20, 2016
    Assignee: RES USA, LLC
    Inventors: Harold A. Wright, Belma Demirel, Sergio Mohedas, Bahman Rejai, Ray J. Huang, Deena Ferdous, Jesse W. Taylor, Dawid J. Duvenhage, Sara L. Rolfe
  • Publication number: 20160318035
    Abstract: A method for converting synthesis gas into liquid hydrocarbons by introducing a synthesis gas feed into a Fischer-Tropsch system that includes a catalytic reactor fluidly connected with at least two slurry loops, the reactor comprising at least as many reactor product outlets and slurry return inlets as slurry loops; each slurry loop comprising a separation system comprising at least one separator, an inlet of each separator fluidly connected to a reactor product outlet via a slurry offtake, and an outlet of each separator fluidly connected to a slurry return inlet via a slurry return; separating concentrated catalyst slurry from the reaction product via the slurry loops; removing liquid hydrocarbon product from each separator; and returning concentrated catalyst slurry to the catalytic reactor via the slurry returns and slurry return inlets. A system for converting synthesis gas into liquid hydrocarbons via the method is also disclosed.
    Type: Application
    Filed: July 12, 2016
    Publication date: November 3, 2016
    Inventors: MARK D. IBSEN, SERGIO MOHEDAS, FRANK HOGSETT, MARK BOHN, HAROLD A. WRIGHT
  • Patent number: 9416320
    Abstract: A method for converting synthesis gas into liquid hydrocarbons by introducing a synthesis gas feed into a Fischer-Tropsch system that includes a catalytic reactor fluidly connected with at least two slurry loops, the reactor comprising at least as many reactor product outlets and slurry return inlets as slurry loops; each slurry loop comprising a separation system comprising at least one separator, an inlet of each separator fluidly connected to a reactor product outlet via a slurry offtake, and an outlet of each separator fluidly connected to a slurry return inlet via a slurry return; separating concentrated catalyst slurry from the reaction product via the slurry loops; removing liquid hydrocarbon product from each separator; and returning concentrated catalyst slurry to the catalytic reactor via the slurry returns and slurry return inlets. A system for converting synthesis gas into liquid hydrocarbons via the method is also disclosed.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: August 16, 2016
    Assignee: RES USA, LLC
    Inventors: Mark Ibsen, Sergio Mohedas, Frank Hogsett, Mark Bohn, Harold A. Wright
  • Publication number: 20160002541
    Abstract: A method for converting synthesis gas into liquid hydrocarbons by introducing a synthesis gas feed into a Fischer-Tropsch system that includes a catalytic reactor fluidly connected with at least two slurry loops, the reactor comprising at least as many reactor product outlets and slurry return inlets as slurry loops; each slurry loop comprising a separation system comprising at least one separator, an inlet of each separator fluidly connected to a reactor product outlet via a slurry offtake, and an outlet of each separator fluidly connected to a slurry return inlet via a slurry return; separating concentrated catalyst slurry from the reaction product via the slurry loops; removing liquid hydrocarbon product from each separator; and returning concentrated catalyst slurry to the catalytic reactor via the slurry returns and slurry return inlets. A system for converting synthesis gas into liquid hydrocarbons via the method is also disclosed.
    Type: Application
    Filed: September 11, 2015
    Publication date: January 7, 2016
    Inventors: Mark Ibsen, Sergio Mohedas, Frank Hogsett, Mark Bohn, Harold A. Wright
  • Patent number: 9168501
    Abstract: A catalytic reaction system comprising: a catalytic reactor fluidly connected with at least two slurry loops, wherein the reactor comprises at least as many reactor product outlets and at least as many slurry return inlets as slurry loops; wherein each slurry loop comprises a separation system comprising a separation system inlet, a separation system product outlet, and a concentrated catalyst slurry outlet; a slurry offtake fluidly connecting the separation system inlet with one of the reactor product outlets; and a slurry return fluidly connecting the separation system outlet with one of the slurry return inlets. The system may comprise at least three slurry loops. The system may comprise at least four slurry loops. A method for converting synthesis gas into liquid hydrocarbons via the catalytic reaction system in also disclosed.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: October 27, 2015
    Assignee: RES USA, LLC
    Inventors: Mark Ibsen, Sergio Mohedas, Frank Hogsett, Mark Bohn, Harold A. Wright
  • Publication number: 20150258516
    Abstract: A catalyst loading system comprising: a vessel comprising at least one gas distribution nozzle at or near the bottom of the vessel, a top fluid distributor located at or near the top of the vessel, a catalyst inlet through which catalyst is introduced into the vessel, a first contact point at which catalyst introduced into the vessel first contacts the contents of the vessel, and a discharge outlet whereby catalyst exits the vessel. Methods of preparing catalyst slurry for introduction into a downstream reactor or in-situ activation within the vessel utilizing the catalyst loading system are also disclosed.
    Type: Application
    Filed: May 29, 2015
    Publication date: September 17, 2015
    Inventors: Mark Anselmo, Derek Bridgford, Nick Cozzi, Sergio Mohedas, Matt Greer, Paul Morton
  • Patent number: 9073025
    Abstract: A catalyst loading system comprising: a vessel comprising at least one gas distribution nozzle at or near the bottom of the vessel, a top fluid distributor located at or near the top of the vessel, a catalyst inlet through which catalyst is introduced into the vessel, a first contact point at which catalyst introduced into the vessel first contacts the contents of the vessel, and a discharge outlet whereby catalyst exits the vessel. Methods of preparing catalyst slurry for introduction into a downstream reactor or in-situ activation within the vessel utilizing the catalyst loading system are also disclosed.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: July 7, 2015
    Assignee: RES USA, LLC
    Inventors: Mark Anselmo, Derek Bridgford, Nick Cozzi, Sergio Mohedas, Matt Greer, Paul Morton
  • Patent number: 9074148
    Abstract: A system including at least one hydrogen extraction unit comprising an inlet for a synthesis feedgas from a synthesis feedgas line and adapted to remove at least one hydrogen-rich gas and at least one hydrogen-lean gas from the synthesis feedgas to yield a refined synthesis gas; and at least one hydrocarbon synthesis reactor, at least one dedicated activation reactor, or both, wherein the at least one hydrocarbon synthesis reactor is fluidly connected with the at least one hydrogen extraction unit and configured to provide liquid hydrocarbons and a first byproduct gas from a synthesis reactor feedstream comprising at least a portion of the refined synthesis gas; and wherein the at least one dedicated activation reactor is fluidly connected with the at least one hydrogen extraction unit, the at least one hydrocarbon synthesis reactor, or both, and configured for activation of hydrocarbon synthesis catalyst via an activation gas.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: July 7, 2015
    Assignee: RES USA, LLC
    Inventors: Sergio Mohedas, Mark Ibsen
  • Publication number: 20150126627
    Abstract: A system for the production of synthetic fuel, the system including a catalytic dual fluidized bed (DFB) configured to produce, from a DFB feedgas, a DFB product containing synthesis gas; and a Fischer-Tropsch (FT) synthesis apparatus fluidly connected with the catalytic DFB, wherein the FT synthesis apparatus includes an FT synthesis reactor configured to produce, from an FT feedgas, an FT overhead and a liquid FT product containing FT wax, wherein the FT feedgas contains at least a portion of the DFB product; and a product separator downstream of and fluidly connected with the FT synthesis reactor, wherein the product separator is configured to separate, from the FT overhead, an FT tailgas and an LFTL product containing LFTL. A method of producing synthetic fuel is also provided.
    Type: Application
    Filed: July 15, 2013
    Publication date: May 7, 2015
    Inventors: George Apanel, Weibin Jiang, Sergio Mohedas, Harold A. Wright
  • Patent number: 9011696
    Abstract: A system for separating particulate from a fluid stream having an inlet solids content, the system comprising: a magnetic dynamic settling vessel comprising at least one magnetic field inside the vessel and/or one magnetized component; at least one inlet for introduction of the fluid stream having a starting solids content; at least one exit for a stream comprising a solids content not greater than the inlet solids content; at least one exit for a fluid stream comprising a solids content not less than the inlet solids content; and a vertical feed conduit extending at least 70% of the distance from the at least one fluid inlet to the at least one exit for a fluid stream comprising a solids content not less than the inlet solids content. A method for separating particulate from a fluid stream having an inlet solids content is also provided.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: April 21, 2015
    Assignee: RES USA LLC
    Inventor: Sergio Mohedas
  • Publication number: 20150023842
    Abstract: A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.
    Type: Application
    Filed: August 25, 2014
    Publication date: January 22, 2015
    Inventors: Harold A. WRIGHT, Belma Demirel, Sergio Mohedas, Bahman Rejai, Ray J. Huang, Deena Ferdous, Jesse W. Taylor, Dawid J. Duvenhage, Sara L. Rolfe
  • Publication number: 20140374359
    Abstract: A system for separating particulate from a fluid stream having an inlet solids content, the system comprising: a magnetic dynamic settling vessel comprising at least one magnetic field inside the vessel and/or one magnetized component; at least one inlet for introduction of the fluid stream having a starting solids content; at least one exit for a stream comprising a solids content not greater than the inlet solids content; at least one exit for a fluid stream comprising a solids content not less than the inlet solids content; and a vertical feed conduit extending at least 70% of the distance from the at least one fluid inlet to the at least one exit for a fluid stream comprising a solids content not less than the inlet solids content. A method for separating particulate from a fluid stream having an inlet solids content is also provided.
    Type: Application
    Filed: September 9, 2014
    Publication date: December 25, 2014
    Inventor: Sergio MOHEDAS
  • Patent number: 8871096
    Abstract: A system for separating particulate from a fluid stream having an inlet solids content, the system comprising: a magnetic dynamic settling vessel comprising at least one magnetic field inside the vessel and/or one magnetized component; at least one inlet for introduction of the fluid stream having a starting solids content; at least one exit for a stream comprising a solids content not greater than the inlet solids content; at least one exit for a fluid stream comprising a solids content not less than the inlet solids content; and a vertical feed conduit extending at least 70% of the distance from the at least one fluid inlet to the at least one exit for a fluid stream comprising a solids content not less than the inlet solids content. A method for separating particulate from a fluid stream having an inlet solids content is also provided.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: October 28, 2014
    Assignee: Res USA, LLC
    Inventor: Sergio Mohedas
  • Publication number: 20140286834
    Abstract: A system for separating liquids from solids comprising an immobilization unit comprising an immobilization vessel containing a bed of magnetizable material and a magnet configured to produce a magnetic field within the immobilization vessel, wherein the immobilization vessel further comprises an immobilization vessel outlet and an immobilization vessel inlet for a fluid comprising liquid and metal-containing particles.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 25, 2014
    Inventors: Sergio MOHEDAS, Harold A. Wright
  • Patent number: 8778178
    Abstract: A system for separating liquids from solids comprising an immobilization unit comprising an immobilization vessel containing a bed of magnetizable material and a magnet configured to produce a magnetic field within the immobilization vessel, wherein the immobilization vessel further comprises an immobilization vessel outlet and an immobilization vessel inlet for a fluid comprising liquid and metal-containing particles.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: July 15, 2014
    Assignee: Rentech, Inc.
    Inventors: Sergio Mohedas, Harold A. Wright
  • Publication number: 20130296448
    Abstract: A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.
    Type: Application
    Filed: July 2, 2013
    Publication date: November 7, 2013
    Inventors: Harold A. Wright, Belma Demirel, Sergio Mohedas, Bahman Rejai, Ray J. Huang, Deena Ferdous, Jesse W. Taylor, Dawid J. Duvenhage, Sara L. Rolfe
  • Patent number: 8530366
    Abstract: A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: September 10, 2013
    Assignee: Rentech, Inc.
    Inventors: Harold A. Wright, Belma Demirel, Sergio Mohedas, Bahman Rejai, Ray Huang, Deena Ferdous, Jesse W. Taylor, Dawid J. Duvenhage, Sara L. Rolfe
  • Publication number: 20120022173
    Abstract: A system including at least one hydrogen extraction unit comprising an inlet for a synthesis feedgas from a synthesis feedgas line and adapted to remove at least one hydrogen-rich gas and at least one hydrogen-lean gas from the synthesis feedgas to yield a refined synthesis gas; and at least one hydrocarbon synthesis reactor, at least one dedicated activation reactor, or both, wherein the at least one hydrocarbon synthesis reactor is fluidly connected with the at least one hydrogen extraction unit and configured to provide liquid hydrocarbons and a first byproduct gas from a synthesis reactor feedstream comprising at least a portion of the refined synthesis gas; and wherein the at least one dedicated activation reactor is fluidly connected with the at least one hydrogen extraction unit, the at least one hydrocarbon synthesis reactor, or both, and configured for activation of hydrocarbon synthesis catalyst via an activation gas.
    Type: Application
    Filed: September 29, 2011
    Publication date: January 26, 2012
    Applicant: RENTECH, INC.
    Inventors: Sergio Mohedas, Mark Ibsen