Patents by Inventor Mark Ibsen

Mark Ibsen 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: 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
  • Patent number: 9255232
    Abstract: A method including introducing a carbonaceous feedstock and a heated heat transfer material into a gasifier, whereby at least a portion of the carbonaceous material is pyrolyzed; removing a gasification product gas comprising, entrained therein, char, particulate heat transfer material, and optionally unreacted carbonaceous feedstock; separating a solids product comprising char, heat transfer material and optionally unreacted carbonaceous material from the gasification product gas; heating at least a portion of the solids product via a combustor, thus producing a heated portion of the solids product and a combustor flue gas, wherein a portion of the heat for heating is obtained via combustion of the char; separating the heated portion from the flue gas, and introducing the separated heated portion into the gasifier, providing heat for pyrolysis; and utilizing at least a portion of the gasification product gas for Fischer-Tropsch synthesis and/or power production.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: February 9, 2016
    Assignee: RES USA, LLC
    Inventors: Weibin Jiang, Bruce E. McComish, Bryan C. Borum, Benjamin H. Carryer, Mark Ibsen, Mark K. Robertson, Eric Elrod, 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: 20150232769
    Abstract: A method including introducing a carbonaceous feedstock and a heated heat transfer material into a gasifier, whereby at least a portion of the carbonaceous material is pyrolyzed; removing a gasification product gas comprising, entrained therein, char, particulate heat transfer material, and optionally unreacted carbonaceous feedstock; separating a solids product comprising char, heat transfer material and optionally unreacted carbonaceous material from the gasification product gas; heating at least a portion of the solids product via a combustor, thus producing a heated portion of the solids product and a combustor flue gas, wherein a portion of the heat for heating is obtained via combustion of the char; separating the heated portion from the flue gas, and introducing the separated heated portion into the gasifier, providing heat for pyrolysis; and utilizing at least a portion of the gasification product gas for Fischer-Tropsch synthesis and/or power production.
    Type: Application
    Filed: April 24, 2015
    Publication date: August 20, 2015
    Inventors: Weibin JIANG, Bruce E. MCCOMISH, Bryan C. BORUM, Benjamin H. CARRYER, Mark IBSEN, Mark K. ROBERTSON, Eric ELROD, Harold A. WRIGHT
  • 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: 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
  • Patent number: 8088187
    Abstract: A method of utilizing hydrogen in synthesis gas production by forming synthesis gas from one or more carbonaceous materials, the synthesis gas comprising hydrogen and carbon monoxide; separating a hydrogen-rich product and a hydrogen-lean product from the synthesis gas to yield an adjusted synthesis gas product; and activating a hydrocarbon synthesis catalyst with at least a portion of the hydrogen-lean product. A system for carrying out the method is also provided, the system including at least one hydrogen extraction unit and an activation reactor operable to activate hydrocarbon synthesis catalyst, wherein the activation reactor comprises an inlet fluidly connected with the at least one hydrogen extraction unit whereby at least a portion of a hydrogen-lean gas stream, at least a portion of a hydrogen-rich gas stream, or at least a portion of both may be introduced into the activation reactor.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: January 3, 2012
    Assignee: Rentech, Inc.
    Inventors: Sergio Mohedas, Mark Ibsen
  • Publication number: 20100160156
    Abstract: A system for activating Fischer-Tropsch catalyst comprising a reactor having a reactor outlet for overhead gas and operable under suitable conditions whereby a catalyst in a volume of liquid carrier comprising Fischer-Tropsch diesel, hydrocracking recycle oil, or a combination thereof may be activated in the presence of an activation gas; a condenser comprising an inlet fluidly connected to the reactor outlet for overhead gas and comprising a condenser outlet for condensed liquids; and a separation unit comprising an inlet fluidly connected to the condenser outlet and a separator outlet for a stream comprising primarily Fischer-Tropsch diesel; and a recycle line fluidly connecting the separator outlet, a hydrocracking unit, or both to the reactor, whereby Fischer-Tropsch diesel recovered from the reactor overhead gas, hydrocracking recycle oil, or a combination thereof may serve as liquid carrier for catalyst in the reactor. A method for activating Fischer-Tropsch catalyst is also provided.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 24, 2010
    Applicant: RENTECH, INC.
    Inventors: Mark Ibsen, Sergio Mohedas
  • Publication number: 20100125107
    Abstract: A method of producing synthesis gas via gasification in a Fischer-Tropsch plant, the method including providing a number of gasifiers, the number of gasifiers provided being at least one more than the base number required to provide 100% plant capacity of synthesis gas when each gasifier is operated at 100% gasifier capacity. A method of continually producing synthesis gas via gasification of a carbonaceous feed in a Fischer-Tropsch plant by providing a number of gasifiers, the number of gasifiers provided being at least one more than the base number required to provide 100% plant capacity of synthesis gas when each gasifier is operated at 100% gasifier capacity; and adjusting the amount of synthesis gas produced by adjusting the number of online gasifiers, the flow rate of carbonaceous feed to each gasifier, or a combination thereof. A system for carrying out the method is also provided.
    Type: Application
    Filed: November 11, 2009
    Publication date: May 20, 2010
    Applicant: RENTECH, INC.
    Inventors: Joshua G. LEE, Mark IBSEN, Robert F. HOGSETT, Harold A. WRIGHT
  • Publication number: 20090069450
    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: Application
    Filed: September 8, 2008
    Publication date: March 12, 2009
    Applicant: RENTECH, INC.
    Inventors: Mark Ibsen, Sergio Mohedas, Frank Hogsett, Mark Bohn, Harold A. Wright
  • Publication number: 20090064584
    Abstract: A method of utilizing hydrogen in synthesis gas production by forming synthesis gas from one or more carbonaceous materials, the synthesis gas comprising hydrogen and carbon monoxide; separating a hydrogen-rich product and a hydrogen-lean product from the synthesis gas to yield an adjusted synthesis gas product; and activating a hydrocarbon synthesis catalyst with at least a portion of the hydrogen-lean product. A system for carrying out the method is also provided, the system including at least one hydrogen extraction unit and an activation reactor operable to activate hydrocarbon synthesis catalyst, wherein the activation reactor comprises an inlet fluidly connected with the at least one hydrogen extraction unit whereby at least a portion of a hydrogen-lean gas stream, at least a portion of a hydrogen-rich gas stream, or at least a portion of both may be introduced into the activation reactor.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 12, 2009
    Applicant: RENTECH, INC.
    Inventors: Sergio Mohedas, Mark Ibsen
  • Publication number: 20080038159
    Abstract: Solvent extraction is used to remove wax and contaminants from an iron-based Fischer-Tropsch catalyst in a natural circulation continuous-flow system. The wax-free catalyst is then subjected to controlled oxidation to convert the iron to its initial oxidized state, Fe203. Reactivation of the oxide catalyst precursor is carried out by addition of synthesis gas.
    Type: Application
    Filed: October 18, 2007
    Publication date: February 14, 2008
    Applicant: RENTECH, INC.
    Inventors: Belma Demirel, Mark Bohn, Charles Benham, James Siebarth, Mark Ibsen
  • Publication number: 20050196332
    Abstract: Solvent extraction is used to remove wax and contaminants from an iron-based Fischer-Tropsch catalyst in a natural circulation continuous-flow system. The wax-free catalyst is then subjected to controlled oxidation to convert the iron to its initial oxidized state, Fe2O3. Reactivation of the oxide catalyst precursor is carried out by addition of synthesis gas.
    Type: Application
    Filed: December 7, 2004
    Publication date: September 8, 2005
    Inventors: Belma Demirel, Mark Bohn, Charles Benham, James Siebarth, Mark Ibsen
  • Publication number: 20050080147
    Abstract: An arrangement of cooling tubes within a Fischer-Tropsch slurry reactor simplifies removal and reinstallation of cooling tubes for reactor maintenance.
    Type: Application
    Filed: October 8, 2003
    Publication date: April 14, 2005
    Inventors: William Hawthorne, Mark Ibsen, Peter Pedersen, Mark Bohn