Patents by Inventor Rajeev NARAYAN

Rajeev 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: 12286596
    Abstract: Implementations of the disclosed subject matter provide a process for upgrading refinery residue feedstock. Step a) may include introducing the refinery residue feedstock into a fluidized bed reactor as a solid. In step b), the refinery residue feedstock may be heated to a devolatilizing and thermal cracking temperature in the fluidized bed reactor to produce a product stream comprising gaseous hydrocarbons and solid coke. The gaseous hydrocarbons may be subjected to catalytic hydroprocessing, in step c), in the presence of molecular hydrogen to increase the hydrogen to carbon ratio and lower the average molecular weight of the gaseous hydrocarbons. In step d), the gaseous hydrocarbons may be separated from the solid coke. In step e), the gaseous hydrocarbons from step d) may be subjected to further processing to produce at least one of: C1-C3 hydrocarbons, liquefied petroleum gas, naphtha range hydrocarbons, and middle distillate range hydrocarbons.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: April 29, 2025
    Assignee: SHELL USA, INC.
    Inventors: Vikrant Nanasaheb Urade, Rajeev Narayan, Ganesh Chintakunta, Harshavardhan Jayant Choudhari, Dhairya Dilip Mehta, Ashwin Kumar Nagarajan
  • Publication number: 20220298437
    Abstract: Implementations of the disclosed subject matter provide a process for upgrading refinery residue feedstock. Step a) may include introducing the refinery residue feedstock into a fluidized bed reactor as a solid. In step b), the refinery residue feedstock may be heated to a devolatilizing and thermal cracking temperature in the fluidized bed reactor to produce a product stream comprising gaseous hydrocarbons and solid coke. The gaseous hydrocarbons may be subjected to catalytic hydroprocessing, in step c), in the presence of molecular hydrogen to increase the hydrogen to carbon ratio and lower the average molecular weight of the gaseous hydrocarbons. In step d), the gaseous hydrocarbons may be separated from the solid coke. In step e), the gaseous hydrocarbons from step d) may be subjected to further processing to produce at least one of: C1-C3 hydrocarbons, liquefied petroleum gas, naphtha range hydrocarbons, and middle distillate range hydrocarbons.
    Type: Application
    Filed: September 1, 2020
    Publication date: September 22, 2022
    Inventors: Vikrant Nanasaheb URADE, Rajeev NARAYAN, Ganesh CHINTAKUNTA, Harshavardhan Jayant CHOUDHARI, Dhairya Dilip MEHTA, Ashwin Kumar NAGARAJAN