Patents by Inventor Navid Rafati
Navid Rafati 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).
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Publication number: 20240125270Abstract: The present disclosure relates to systems and methods useful for power production. In particular, a power production cycle utilizing CO2 as a working fluid may be configured for simultaneous hydrogen production. Beneficially, substantially all carbon arising from combustion in power production and hydrogen production is captured in the form of carbon dioxide. Further, produced hydrogen (optionally mixed with nitrogen received from an air separation unit) can be input as fuel in a gas turbine combined cycle unit for additional power production therein without any atmospheric CO2 discharge.Type: ApplicationFiled: December 21, 2023Publication date: April 18, 2024Inventors: Rodney John Allam, Navid Rafati
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Publication number: 20240084721Abstract: The present disclosure relates to cogeneration of power and one or more chemical entities through operation of a power production cycle and treatment of a stream comprising carbon monoxide and hydrogen. A cogeneration process can include carrying out a power production cycle, providing a heated stream comprising carbon monoxide and hydrogen, cooling the heated stream comprising carbon monoxide and hydrogen against at least one stream in the power production cycle so as to provide heating to the power production cycle, and carrying out at least one purification step so as to provide a purified stream comprising predominately hydrogen.Type: ApplicationFiled: November 17, 2023Publication date: March 14, 2024Inventors: Xijia Lu, Brock Alan Forrest, Navid Rafati
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Patent number: 11891950Abstract: The present disclosure relates to systems and methods useful for power production. In particular, a power production cycle utilizing CO2 as a working fluid may be configured for simultaneous hydrogen production. Beneficially, substantially all carbon arising from combustion in power production and hydrogen production is captured in the form of carbon dioxide. Further, produced hydrogen (optionally mixed with nitrogen received from an air separation unit) can be input as fuel in a gas turbine combined cycle unit for additional power production therein without any atmospheric CO2 discharge.Type: GrantFiled: October 21, 2022Date of Patent: February 6, 2024Assignee: 8 Rivers Capital, LLCInventors: Rodney John Allam, Navid Rafati
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Patent number: 11859517Abstract: The present disclosure relates to cogeneration of power and one or more chemical entities through operation of a power production cycle and treatment of a stream comprising carbon monoxide and hydrogen. A cogeneration process can include carrying out a power production cycle, providing a heated stream comprising carbon monoxide and hydrogen, cooling the heated stream comprising carbon monoxide and hydrogen against at least one stream in the power production cycle so as to provide heating to the power production cycle, and carrying out at least one purification step so as to provide a purified stream comprising predominately hydrogen.Type: GrantFiled: June 12, 2020Date of Patent: January 2, 2024Assignee: 8 Rivers Capital, LLCInventors: Xijia Lu, Brock Alan Forrest, Navid Rafati
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Publication number: 20230392091Abstract: The present disclosure relates to systems and methods for separation of sulfurous material(s) from a multi-component feed stream. The systems and methods can comprise contacting the multi-component feed stream with a solvent in a contacting column so that at least a portion of the sulfurous material(s) is transferred from the multi-component feed stream to the solvent. A stream of a substantially purified gas can thus be provided along with a liquid stream comprising at least a majority of the sulfurous material. In particular, the solvent can comprise liquid carbon dioxide, which can be particularly beneficial for removing sulfurous materials from multi-component feed streams.Type: ApplicationFiled: July 10, 2023Publication date: December 7, 2023Inventors: Rodney John Allam, Navid Rafati
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Publication number: 20230348344Abstract: The present disclosure relates to systems and methods useful in the separation of a mixed gaseous stream into one or more individual components. Resulting products can include, for example, carbon dioxide, sulfurous compounds (e.g., hydrogen sulfide), nitrogen, helium, fuel gas (e.g., natural gas, or a single or mixed hydrocarbon stream), and liquefied natural gas. The methods can include processing within a first contacting column a combination of a multi-component feed stream and an anti-freezing agent, removing from the first contacting column a stream containing a fuel gas, removing from the first contacting column a stream containing a sulfurous material, and processing the stream containing the sulfurous material in a second contacting column to provide a stream comprising at least ethane and to provide a separate stream comprising at least a portion of the sulfurous material.Type: ApplicationFiled: July 21, 2021Publication date: November 2, 2023Inventor: Navid Rafati
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Patent number: 11732206Abstract: The present disclosure relates to systems and methods for separation of sulfurous material(s) from a multi-component feed stream. The systems and methods can comprise contacting the multi-component feed stream with a solvent in a contacting column so that at least a portion of the sulfurous material(s) is transferred from the multi-component feed stream to the solvent. A stream of a substantially purified gas can thus be provided along with a liquid stream comprising at least a majority of the sulfurous material. In particular, the solvent can comprise liquid carbon dioxide, which can be particularly beneficial for removing sulfurous materials from multi-component feed streams.Type: GrantFiled: August 17, 2022Date of Patent: August 22, 2023Assignee: 8 Rivers Capital, LLCInventors: Rodney John Allam, Navid Rafati
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Publication number: 20230127569Abstract: The present invention relates to systems and methods for controlling a power production plant and optionally providing a one or more product streams for an end use thereof. Control of a power production plant specifically can include executing one or more functions effective for adjusting a heat profile of a heat exchange unit (HEU) operating with a plurality of streams passing therethrough. This can include implementing a control function that alters a flow of one or more of the plurality of streams by adding flow to or withdrawing flow one or more of the plurality of streams at an intermediate temperature range within the HEU at a point that is positioned between a first end and a second end of the HEU.Type: ApplicationFiled: December 22, 2022Publication date: April 27, 2023Inventors: Brock Alan Forrest, Xijia Lu, Jeremy Eron Fetvedt, Navid Rafati
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Publication number: 20230042457Abstract: The present disclosure relates to systems and methods useful for power production. In particular, a power production cycle utilizing CO2 as a working fluid may be configured for simultaneous hydrogen production. Beneficially, substantially all carbon arising from combustion in power production and hydrogen production is captured in the form of carbon dioxide. Further, produced hydrogen (optionally mixed with nitrogen received from an air separation unit) can be input as fuel in a gas turbine combined cycle unit for additional power production therein without any atmospheric CO2 discharge.Type: ApplicationFiled: October 21, 2022Publication date: February 9, 2023Inventors: Rodney John Allam, Navid Rafati
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Patent number: 11549433Abstract: The present invention relates to systems and methods for controlling a power production plant and optionally providing a one or more product streams for an end use thereof. Control of a power production plant specifically can include executing one or more functions effective for adjusting a heat profile of a heat exchange unit (HEU) operating with a plurality of streams passing therethrough. This can include implementing a control function that alters a flow of one or more of the plurality of streams by adding flow to or withdrawing flow one or more of the plurality of streams at an intermediate temperature range within the HEU at a point that is positioned between a first end and a second end of the HEU.Type: GrantFiled: October 22, 2020Date of Patent: January 10, 2023Assignee: 8 Rivers Capital, LLCInventors: Brock Alan Forrest, Xijia Lu, Jeremy Eron Fetvedt, Navid Rafati
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Publication number: 20220389342Abstract: The present disclosure relates to systems and methods for separation of sulfurous material(s) from a multi-component feed stream. The systems and methods can comprise contacting the multi-component feed stream with a solvent in a contacting column so that at least a portion of the sulfurous material(s) is transferred from the multi-component feed stream to the solvent. A stream of a substantially purified gas can thus be provided along with a liquid stream comprising at least a majority of the sulfurous material. In particular, the solvent can comprise liquid carbon dioxide, which can be particularly beneficial for removing sulfurous materials from multi-component feed streams.Type: ApplicationFiled: August 17, 2022Publication date: December 8, 2022Inventors: Rodney John Allam, Navid Rafati
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Patent number: 11506122Abstract: The present disclosure relates to systems and methods useful for power production. In particular, a power production cycle utilizing CO2 as a working fluid may be configured for simultaneous hydrogen production. Beneficially, substantially all carbon arising from combustion in power production and hydrogen production is captured in the form of carbon dioxide. Further, produced hydrogen (optionally mixed with nitrogen received from an air separation unit) can be input as fuel in a gas turbine combined cycle unit for additional power production therein without any atmospheric CO2 discharge.Type: GrantFiled: November 9, 2017Date of Patent: November 22, 2022Assignee: 8 Rivers Capital, LLCInventors: Rodney John Allam, Navid Rafati
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Publication number: 20220203297Abstract: The present disclosure provides systems for carbon capture in combination with production of one or more industrially useful materials. The disclosure also provides methods for carrying out carbon capture in combination with an industrial process. In particular, carbon capture can include carrying out calcination in a reactor, separation of carbon dioxide rich flue gases from industrially useful products, and capture of at least a portion of the carbon dioxide for sequestration of other use, such as enhanced oil recovery.Type: ApplicationFiled: March 17, 2022Publication date: June 30, 2022Inventors: Xijia Lu, Brock Alan Forrest, Jeremy Eron Fetvedt, Navid Rafati
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Patent number: 11285437Abstract: The present disclosure provides systems for carbon capture in combination with production of one or more industrially useful materials. The disclosure also provides methods for carrying out carbon capture in combination with an industrial process. In particular, carbon capture can include carrying out calcination in a reactor, separation of carbon dioxide rich flue gases from industrially useful products, and capture of at least a portion of the carbon dioxide for sequestration of other use, such as enhanced oil recovery.Type: GrantFiled: May 1, 2020Date of Patent: March 29, 2022Assignee: 8 Rivers Capital, LLCInventors: Xijia Lu, Brock Alan Forrest, Jeremy Eron Fetvedt, Navid Rafati
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Publication number: 20210115849Abstract: The present invention relates to systems and methods for controlling a power production plant and optionally providing a one or more product streams for an end use thereof. Control of a power production plant specifically can include executing one or more functions effective for adjusting a heat profile of a heat exchange unit (HEU) operating with a plurality of streams passing therethrough. This can include implementing a control function that alters a flow of one or more of the plurality of streams by adding flow to or withdrawing flow one or more of the plurality of streams at an intermediate temperature range within the HEU at a point that is positioned between a first end and a second end of the HEU.Type: ApplicationFiled: October 22, 2020Publication date: April 22, 2021Inventors: Brock Alan Forrest, Xijia Lu, Jeremy Eron Fetvedt, Navid Rafati
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Publication number: 20200346165Abstract: The present disclosure provides systems for carbon capture in combination with production of one or more industrially useful materials. The disclosure also provides methods for carrying out carbon capture in combination with an industrial process. In particular, carbon capture can include carrying out calcination in a reactor, separation of carbon dioxide rich flue gases from industrially useful products, and capture of at least a portion of the carbon dioxide for sequestration of other use, such as enhanced oil recovery.Type: ApplicationFiled: May 1, 2020Publication date: November 5, 2020Inventors: Xijia Lu, Brock Alan Forrest, Jeremy Eron Fetvedt, Navid Rafati