Patents by Inventor Abhijeet Uddhavarao AVHALE

Abhijeet Uddhavarao AVHALE 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).

  • Method for start-up and operation of a Fischer-Tropsch reactor
    Patent number: 10155909
    Abstract: The invention relates to a method for start-up and operation of a Fischer-Tropsch reactor comprising the steps of: (a) providing a reactor with a fixed bed of reduced Fischer-Tropsch catalyst that comprises cobalt as catalytically active metal; (b) supplying a gaseous feed stream comprising carbon monoxide and hydrogen to the reactor, wherein the gaseous feed stream comprises a nitrogen-containing compound other than molecular nitrogen in an initial concentration, wherein the initial concentration in the range of from 10 to 350 ppbv based on the volume of the gaseous feed stream; (c) converting carbon monoxide and hydrogen supplied with the gaseous feed stream to the reactor into hydrocarbons at a reaction temperature and at a set reactor productivity, whilst maintaining the initial concentration of the nitrogen-containing compound and maintaining the set reactor productivity during a first time period by adjusting the reaction temperature; (d) decreasing the concentration of the nitrogen-containing compound
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: December 18, 2018
    Assignee: SHELL OIL COMPANY
    Inventors: Abhijeet Uddhavarao Avhale, Avhale John Nash, Thomas Joris Remans, Barend Roeland Vermeer
  • Method for Start-up And Operation Of A Fischer-Tropsch Reactor
    Publication number: 20180195007
    Abstract: The invention relates to a method for start-up and operation of a Fischer-Tropsch reactor comprising the steps of: (a) providing a reactor with a fixed bed of reduced Fischer-Tropsch catalyst that comprises cobalt as catalytically active metal; (b) supplying a gaseous feed stream comprising carbon monoxide and hydrogen to the reactor, wherein the gaseous feed stream comprises a nitrogen-containing compound other than molecular nitrogen in an initial concentration, wherein the initial concentration in the range of from 10 to 350 ppbv based on the volume of the gaseous feed stream; (c) converting carbon monoxide and hydrogen supplied with the gaseous feed stream to the reactor into hydrocarbons at a reaction temperature and at a set reactor productivity, whilst maintaining the initial concentration of the nitrogen-containing compound and maintaining the set reactor productivity during a first time period by adjusting the reaction temperature; (d) decreasing the concentration of the nitrogen- containing compound
    Type: Application
    Filed: March 16, 2015
    Publication date: July 12, 2018
    Inventors: Abhijeet Uddhavarao AVHALE, AVHALE John NASH, Thomas Joris REMANS, Barend Roeland VERMEER