Patents by Inventor Dennis L. Yakobson

Dennis L. Yakobson 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: 20120153639
    Abstract: A method for meeting both base-load and peak-load demand in a power production facility. By integrating a Fischer-Tropsch (FT) hydrocarbon production facility with an electrical power generating facility, peak-load power demand can be met by reducing the temperature of the FT reactor thereby increasing the quantity of tail gases and using FT tail gases to fuel a gas turbine generator set. The method enables rapid power response and allows the synthesis gas generating units and the FT units to operate with constant flow rates.
    Type: Application
    Filed: February 27, 2012
    Publication date: June 21, 2012
    Applicant: RENTECH, INC.
    Inventors: Dennis L. YAKOBSON, Claude C. Corkadel, III, Charles B. Benham, Belma Demirel, Peter S. Pedersen
  • Patent number: 8146368
    Abstract: A method for meeting both base-load and peak-load demand in a power production facility. By integrating a Fischer-Tropsch (FT) hydrocarbon production facility with an electrical power generating facility, peak-load power demand can be met by reducing the temperature of the FT reactor thereby increasing the quantity of tail gases and using FT tail gases to fuel a gas turbine generator set. The method enables rapid power response and allows the synthesis gas generating units and the FT units to operate with constant flow rates.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: April 3, 2012
    Assignee: Rentech, Inc.
    Inventors: Dennis L. Yakobson, Claude C. Corkadel, III, Charles B. Benham, Belma Demirel, Peter S. Pedersen
  • Patent number: 7919065
    Abstract: A gasification plant and methods for producing ammonia, Fischer-Tropsch fuels, electrical power, and/or sulfur from carbon-bearing feedstocks including coal and/or petroleum coke. Methods for production of desired relative amounts of ammonia and Fischer-Tropsch liquid hydrocarbons by adjusting the amount of synthesis gas bypassing the Fischer-Tropsch reactor. The multi-product and integrated plants may be used to reduce the amount of CO2 vented into the atmosphere during the production of these products.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: April 5, 2011
    Assignee: Rentech, Inc.
    Inventors: Peter S. Pedersen, Dennis L. Yakobson
  • Patent number: 7803329
    Abstract: A gasification plant and methods for producing ammonia, Fischer-Tropsch fuels, electrical power, and/or sulfur from carbon-bearing feedstocks including coal and/or petroleum coke. Methods for production of desired relative amounts of ammonia and Fischer-Tropsch liquid hydrocarbons by adjusting the amount of synthesis gas bypassing the Fischer-Tropsch reactor. The multi-product and integrated plants may be used to reduce the amount of CO2 vented into the atmosphere during the production of these products.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: September 28, 2010
    Assignee: Rentech, Inc.
    Inventors: Peter S. Pedersen, Dennis L. Yakobson
  • Publication number: 20100204348
    Abstract: A gasification plant and methods for producing ammonia, Fischer-Tropsch fuels, electrical power, and/or sulfur from carbon-bearing feedstocks including coal and/or petroleum coke. Methods for production of desired relative amounts of ammonia and Fischer-Tropsch liquid hydrocarbons by adjusting the amount of synthesis gas bypassing the Fischer-Tropsch reactor. The multi-product and integrated plants may be used to reduce the amount of CO2 vented into the atmosphere during the production of these products.
    Type: Application
    Filed: April 21, 2010
    Publication date: August 12, 2010
    Applicant: RENTECH, INC.
    Inventors: Peter S. PEDERSEN, Dennis L. YAKOBSON
  • Publication number: 20100109338
    Abstract: A method for meeting both base-load and peak-load demand in a power production facility. By integrating a Fischer-Tropsch (FT) hydrocarbon production facility with an electrical power generating facility, peak-load power demand can be met by reducing the temperature of the FT reactor thereby increasing the quantity of tail gases and using FT tail gases to fuel a gas turbine generator set. The method enables rapid power response and allows the synthesis gas generating units and the FT units to operate with constant flow rates.
    Type: Application
    Filed: December 1, 2009
    Publication date: May 6, 2010
    Applicant: RENTECH, INC.
    Inventors: Dennis L. Yakobson, Claude C. Corkadel, III, Charles B. Benham, Belma Demirel, Peter S. Pedersen
  • Patent number: 7683006
    Abstract: A method for transforming at least a part of the catalyst precursor hematite into x-carbide (Fe5C2) and ??-carbide (FeC2.2) without a large amount of fines generation. This method slows the transformation of the hematite to iron carbides by reducing the partial pressure of the synthesis gas by inert gas dilution. The activation time is about three to about five hours.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: March 23, 2010
    Assignee: Rentech, Inc.
    Inventors: Dennis L. Yakobson, Elijah C. Philipp, Mark S. Bohn
  • Patent number: 7644587
    Abstract: A method for meeting both base-load and peak-load demand in a power production facility. By integrating a Fischer-Tropsch (FT) hydrocarbon production facility with an electrical power generating facility, peak-load power demand can be met by reducing the temperature of the FT reactor thereby increasing the quantity of tail gases and using FT tail gases to fuel a gas turbine generator set. The method enables rapid power response and allows the synthesis gas generating units and the FT units to operate with constant flow rates.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: January 12, 2010
    Assignee: Rentech, Inc.
    Inventors: Dennis L. Yakobson, Claude C. Corkadel, III, Charles B. Benham, Belma Demirel, Peter S. Pedersen
  • Publication number: 20090227448
    Abstract: A method for transforming at least a part of the catalyst precursor hematite into x-carbide (Fe5C2) and ??-carbide (FeC2.2) without a large amount of fines generation. This method slows the transformation of the hematite to iron carbides by reducing the partial pressure of the synthesis gas by inert gas dilution. The activation time is about three to about five hours.
    Type: Application
    Filed: March 27, 2009
    Publication date: September 10, 2009
    Applicant: RENTECH, INC.
    Inventors: Dennis L. Yakobson, Elijah C. Philipp, Mark S. Bohn
  • Patent number: 7544719
    Abstract: A method for transforming at least a part of the catalyst precursor hematite into ?-carbide (Fe5C2) and ??-carbide (FeC2.2) without a large amount of fines generation. This method slows the transformation of the hematite to iron carbides by reducing the partial pressure of the synthesis gas by inert gas dilution. The activation time is about three to about five hours.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: June 9, 2009
    Assignee: Rentech, Inc.
    Inventors: Dennis L. Yakobson, Elijah C. Philipp, Mark S. Bohn
  • Publication number: 20080223046
    Abstract: A method for meeting both base-load and peak-load demand in a power production facility. By integrating a Fischer-Tropsch (FT) hydrocarbon production facility with an electrical power generating facility, peak-load power demand can be met by reducing the temperature of the FT reactor thereby increasing the quantity of tail gases and using FT tail gases to fuel a gas turbine generator set. The method enables rapid power response and allows the synthesis gas generating units and the FT units to operate with constant flow rates.
    Type: Application
    Filed: December 21, 2005
    Publication date: September 18, 2008
    Inventors: Dennis L. Yakobson, Claude C. Corkadel, Charles B. Benham, Belma Demirel, Peter S. Pedersen
  • Publication number: 20080132588
    Abstract: A gasification plant and methods for producing ammonia, Fischer-Tropsch fuels, electrical power, and/or sulfur from carbon-bearing feedstocks including coal and/or petroleum coke. Methods for production of desired relative amounts of ammonia and Fischer-Tropsch liquid hydrocarbons by adjusting the amount of synthesis gas bypassing the Fischer-Tropsch reactor. The multi-product and integrated plants may be used to reduce the amount of CO2 vented into the atmosphere during the production of these products.
    Type: Application
    Filed: October 18, 2007
    Publication date: June 5, 2008
    Applicant: RENTECH, INC.
    Inventors: Peter S. Pedersen, Dennis L. Yakobson
  • Publication number: 20080015266
    Abstract: A method for transforming at least a part of the catalyst precursor hematite into ?-carbide (Fe5C2) and ??-carbide (FeC2.2) without a large amount of fines generation. This method slows the transformation of the hematite to iron carbides by reducing the partial pressure of the synthesis gas by inert gas dilution. The activation time is about three to about five hours.
    Type: Application
    Filed: July 12, 2006
    Publication date: January 17, 2008
    Inventors: Dennis L. Yakobson, Elijah C. Philipp, Mark S. Bohn
  • Patent number: 7300642
    Abstract: A gasification plant for producing ammonia, Fischer-Tropsch fuels, and electrical power from carbon-bearing feedstocks.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: November 27, 2007
    Assignee: Rentech, Inc.
    Inventors: Peter S. Pedersen, Dennis L. Yakobson
  • Patent number: 6976362
    Abstract: A plant for producing Fischer-Tropsch liquids and electrical power with greatly reduced emissions of carbon dioxide to the atmosphere is made up of a syngas generator unit, an air separation unit, a Fischer-Tropsch unit, a CO2 removal unit, and a combined cycle electricity generation unit. Each of Fischer-Tropsch liquids, carbon dioxide, and electrical power can be recoverable under proper economic conditions. Electrical power is recoverable by the use of a gas turbine fueled by predominantly hydrogen and a steam turbine powered by steam generated by cooling exhaust gases from the gas turbine. Sequestration of CO2 and fueling the gas turbine with hydrogen reduces the amount of greenhouse gases emitted to the atmosphere.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: December 20, 2005
    Assignee: Rentech, Inc.
    Inventors: Richard O. Sheppard, Dennis L. Yakobson
  • Publication number: 20040216465
    Abstract: A plant for producing Fischer-Tropsch liquids and electrical power with greatly reduced emissions of carbon dioxide to the atmosphere is made up of a syngas generator unit, an air separation unit, a Fischer-Tropsch unit, a CO2 removal unit, and a combined cycle electricity generation unit. Each of Fischer-Tropsch liquids, carbon dioxide, and electrical power can be recoverable under proper economic conditions. Electrical power is recoverable by the use of a gas turbine fueled by predominantly hydrogen and a steam turbine powered by steam generated by cooling exhaust gases from the gas turbine. Sequestration of CO2 and fueling the gas turbine with hydrogen reduces the amount of greenhouse gases emitted to the atmosphere.
    Type: Application
    Filed: July 1, 2003
    Publication date: November 4, 2004
    Inventors: Richard O. Sheppard, Dennis L. Yakobson
  • Patent number: 6809123
    Abstract: A carbon-bearing feedstock is reacted with oxygen and water in a partial oxidation reactor to produce a mixture of hydrogen and carbon monoxide. The hydrogen is removed as a first product and the remaining carbon monoxide is reacted with steam over a bifunctional catalyst to produce higher hydrocarbons and carbon dioxide. The bifunctional catalyst provides water gas shift and Fischer-Tropsch functions.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: October 26, 2004
    Assignee: Rentech, Inc.
    Inventor: Dennis L. Yakobson
  • Publication number: 20040029983
    Abstract: A carbon-bearing feedstock is reacted with oxygen and water in a partial oxidation reactor to produce a mixture of hydrogen and carbon monoxide. The hydrogen is removed as a first product and the remaining carbon monoxide is reacted with steam over a bifunctional catalyst to produce higher hydrocarbons and carbon dioxide. The bifunctional catalyst provides water gas shift and Fischer-Tropsch functions.
    Type: Application
    Filed: August 7, 2002
    Publication date: February 12, 2004
    Inventor: Dennis L. Yakobson
  • Patent number: 6632846
    Abstract: A plant for manufacturing urea from carbonaceous materials, oxygen from an air separation unit and water, preferably steam, is made up of a syngas generator unit, an air separation unit, Fischer-Tropsch unit, a CO2 removal unit, a hydrogen removal unit, a methanator unit, an ammonia converter unit and a urea synthesizer unit. Each of Fischer-Tropsch liquids, ammonia, hydrogen and urea can be recoverable under proper economic conditions. Electrical power is recoverable by the addition of at least one of a steam turbine and a gas turbine which is/are coupled to an electrical generator.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: October 14, 2003
    Assignee: Rentech, Inc.
    Inventors: Richard O. Sheppard, Dennis L. Yakobson
  • Patent number: 6534552
    Abstract: Increased hydrocarbon yields from natural gas and reduced oxygen consumption improvements are obtained by recycling hydrogen to a Fischer-Tropsch reactor, which can have a catalyst exhibiting either a low water gas shift activity such as cobalt, or a high water gas shift activity such as iron. At least a portion of the remaining tail gas, either before or after the hydrogen has been removed, is recycled to the inlet of the synthesis gas production reactor.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: March 18, 2003
    Assignee: Rentech, Inc.
    Inventors: Charles B. Benham, Mark S. Bohn, Dennis L. Yakobson