Patents by Inventor Raghu Narayan

Raghu Narayan 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: 12637626
    Abstract: A system for steam cracking a whole crude that may include a volatilization device, a control system, a separator, and a steam pyrolysis reactor. The volatilization device may be configured to separate a vapor phase from a liquid phase. The control system may be configured to maintain a flow rate of the whole crude and steam, at an initial relative velocity of less than 30 m/s. The separator may be fluidly connected to the volatilization device and configured to separate the liquid phase into a second vapor phase, and a second liquid phase. The steam pyrolysis reactor may include a convection section and a steam pyrolysis heater section, the convection section configured to heat the vapor phase, the liquid phase, and the second vapor phase, and the steam pyrolysis heater section configured to steam crack hydrocarbons in the vapor phase thereby generating a cracked hydrocarbon product.
    Type: Grant
    Filed: February 22, 2024
    Date of Patent: May 26, 2026
    Assignees: Lummus Technology LLC, Saudi Aramco Technologies Company
    Inventors: Dennis Maloney, Kandasamy Sundaram, Raghu Narayan, Abdul Rahman Zafer Akhras
  • Patent number: 12384977
    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: Grant
    Filed: November 5, 2021
    Date of Patent: August 12, 2025
    Assignees: 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
  • Publication number: 20240263090
    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: April 12, 2024
    Publication date: August 8, 2024
    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
  • Publication number: 20240209271
    Abstract: A system for steam cracking a whole crude that may include a volatilization device, a control system, a separator, and a steam pyrolysis reactor. The volatilization device may be configured to separate a vapor phase from a liquid phase. The control system may be configured to maintain a flow rate of the whole crude and steam, at an initial relative velocity of less than 30 m/s. The separator may be fluidly connected to the volatilization device and configured to separate the liquid phase into a second vapor phase, and a second liquid phase. The steam pyrolysis reactor may include a convection section and a steam pyrolysis heater section, the convection section configured to heat the vapor phase, the liquid phase, and the second vapor phase, and the steam pyrolysis heater section configured to steam crack hydrocarbons in the vapor phase thereby generating a cracked hydrocarbon product.
    Type: Application
    Filed: February 22, 2024
    Publication date: June 27, 2024
    Applicants: LUMMUS TECHNOLOGY LLC, Saudi Aramco Technologies Company
    Inventors: Dennis Maloney, Kandasamy Sundaram, Raghu Narayan, Abdul Rahman Zafer Akhras
  • Patent number: 11976245
    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: Grant
    Filed: November 5, 2021
    Date of Patent: May 7, 2024
    Assignees: 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: 11959032
    Abstract: A process for steam cracking a whole crude including a volatilization step performed to maintain a relatively large hydrocarbon droplet size. The process may include contacting a whole crude with steam to volatilize a portion of the hydrocarbons, wherein the contacting of the hydrocarbon feedstock and steam is conducted at an initial relative velocity of less than 30 m/s, for example. The resulting vapor phase, including volatilized hydrocarbons and steam may then be separated from a liquid phase comprising unvaporized hydrocarbons. The hydrocarbons in the vapor phase may then be forwarded to a steam pyrolysis reactor for steam cracking of the hydrocarbons in the vapor phase.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: April 16, 2024
    Assignees: LUMMUS TECHNOLOGY LLC, Saudi Arabian Technology Company
    Inventors: Dennis Maloney, Kandasamy Sundaram, Raghu Narayan, Abdul Rahman Zafer Akhras
  • Publication number: 20220333025
    Abstract: A process for steam cracking a whole crude including a volatilization step performed to maintain a relatively large hydrocarbon droplet size. The process may include contacting a whole crude with steam to volatilize a portion of the hydrocarbons, wherein the contacting of the hydrocarbon feedstock and steam is conducted at an initial relative velocity of less than 30 m/s, for example. The resulting vapor phase, including volatilized hydrocarbons and steam may then be separated from a liquid phase comprising unvaporized hydrocarbons. The hydrocarbons in the vapor phase may then be forwarded to a steam pyrolysis reactor for steam cracking of the hydrocarbons in the vapor phase.
    Type: Application
    Filed: July 1, 2022
    Publication date: October 20, 2022
    Applicants: LUMMUS TECHNOLOGY LLC, Saudi Aramco Technologies Company
    Inventors: Dennis Maloney, Kandasamy Sundaram, Raghu Narayan, Abdul Rahman Zafer Akhras
  • Patent number: 11407950
    Abstract: A process for steam cracking a whole crude including a volatilization step performed to maintain a relatively large hydrocarbon droplet size. The process may include contacting a whole crude with steam to volatilize a portion of the hydrocarbons, wherein the contacting of the hydrocarbon feedstock and steam is conducted at an initial relative velocity of less than 30 m/s, for example. The resulting vapor phase, including volatilized hydrocarbons and steam may then be separated from a liquid phase comprising unvaporized hydrocarbons. The hydrocarbons in the vapor phase may then be forwarded to a steam pyrolysis reactor for steam cracking of the hydrocarbons in the vapor phase.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: August 9, 2022
    Assignees: Lummus Technology LLC, Saudi Aramco Technologies Company
    Inventors: Dennis Maloney, Kandasamy Sundaram, Raghu Narayan, Abdul Rahman Zafer Akhras
  • Publication number: 20220056354
    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: November 5, 2021
    Publication date: February 24, 2022
    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
  • Publication number: 20220056353
    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: November 5, 2021
    Publication date: February 24, 2022
    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: 11180706
    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: Grant
    Filed: March 16, 2020
    Date of Patent: November 23, 2021
    Assignees: 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
  • 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
  • Publication number: 20200291309
    Abstract: A process for steam cracking a whole crude including a volatilization step performed to maintain a relatively large hydrocarbon droplet size. The process may include contacting a whole crude with steam to volatilize a portion of the hydrocarbons, wherein the contacting of the hydrocarbon feedstock and steam is conducted at an initial relative velocity of less than 30 m/s, for example. The resulting vapor phase, including volatilized hydrocarbons and steam may then be separated from a liquid phase comprising unvaporized hydrocarbons. The hydrocarbons in the vapor phase may then be forwarded to a steam pyrolysis reactor for steam cracking of the hydrocarbons in the vapor phase.
    Type: Application
    Filed: March 16, 2020
    Publication date: September 17, 2020
    Applicants: LUMMUS TECHNOLOGY LLC, Saudi Aramco Technologies Company
    Inventors: Dennis Maloney, Kandasamy Sundaram, Raghu Narayan, Abdul Rahman Zafer Akhras
  • Patent number: 6955483
    Abstract: A package for housing an optoelectronic device such as a photodiode or laser diode is disclosed. The package includes a base having an upper surface. The photodiode chip and related circuitry are mounted to the upper surface of the base. A fiber receptacle structure is mounted to the base and hermetically encloses the photodiode/laser diode chip without the need for a separate cap and lens structure. In the event insulating base is utilized, the plurality of via holes are preferably drilled through the base and the via holes are filled with conductive material thereby enabling the fiber receptacle structure to be hermetically welded to the insulating base using the disclosed process.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: October 18, 2005
    Assignee: Intel Corporation
    Inventor: Raghu Narayan
  • Publication number: 20050141829
    Abstract: A package for housing an optoelectronic device such as a photodiode or laser diode is disclosed. The package includes a base having an upper surface. The photodiode chip and related circuitry are mounted to the upper surface of the base. A fiber receptacle structure is mounted to the base and hermetically encloses the photodiode/laser diode chip without the need for a separate cap and lens structure. In the event insulating base is utilized, the plurality of via holes are preferably drilled through the base and the via holes are filled with conductive material thereby enabling the fiber receptacle structure to be hermetically welded to the insulating base using the disclosed process.
    Type: Application
    Filed: December 30, 2003
    Publication date: June 30, 2005
    Inventor: Raghu Narayan