Patents by Inventor Dafer Mubarak Alshahrani

Dafer Mubarak Alshahrani 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: 11331655
    Abstract: A method for preparing a homogenous catalyst for the production of linear alpha olefins includes: preparing a first pre-catalyst solution comprising a modifier and an organoaluminum compound in a first solvent wherein the first pre-catalyst solution is reacted and stored in a first vessel for a period of time of 1 hour to 90 days; preparing a second pre-catalyst solution comprising a second solvent, a ligand, and a chromium containing compound, wherein the second pre-catalyst solution is stored in a second vessel for a period of time of 1 hour to 90 days; and after a period of time, adding the first pre-catalyst solution to a catalyst pre-formation unit; after the same period of time, adding the second pre-catalyst solution to the catalyst pre-formation unit; forming a homogenous catalyst by mixing the first pre-catalyst solution and the second pre-catalyst solution; adding the homogeneous catalyst to a reaction vessel, wherein the reaction vessel comprises an alpha olefin; and forming the linear alpha olefin
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: May 17, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Abdullah Saad Al-Dughaither, Shahid Azam, Abdulmajeed Mohammed Al-Hamdan, Dafer Mubarak Alshahrani, Sebastiano Licciulli, Anina Wohl, Wolfgang Muller, Heinz Bolt, Andreas Meiswinkel, Tobias Meier, Ralf Noack
  • Patent number: 11285469
    Abstract: A method for preparing a homogenous catalyst for use in preparing a linear alpha olefin includes: preparing a first pre-catalyst solution by mixing a chromium source and a ligand in a first solvent, wherein the first pre-catalyst solution is stored in a first vessel; preparing a second pre-catalyst solution by mixing an organoaluminum compound and a modifier in a second solvent, wherein the second pre-catalyst solution is stored in a second vessel; and simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a reaction vessel, wherein the reaction vessel includes a third solvent.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: March 29, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Abdullah Saad Al-Dughaither, Shahid Azam, Abdulmajeed Mohammed Al-Hamdan, Dafer Mubarak Alshahrani, Sebastiano Licciulli, Andreas Meiswinkel, Heinz Bolt, Wolfgang Muller, Anina Wohl
  • Patent number: 11254630
    Abstract: A method of separating linear alpha olefins, comprising: passing a feed stream comprising linear alpha olefins through a first column; distributing a C4? fraction to a top portion of the first column; withdrawing a C6+ fraction from a bottom portion of the first column and passing the C6+ fraction through a second column; distributing a C12+ fraction to a bottom portion of the second column; withdrawing a C10? fraction from a top portion of the second column and passing the C10? fraction through a third column, wherein the C10? fraction is substantially free of polymer; and distributing a C6 fraction to a top portion of the third column.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: February 22, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Dafer Mubarak Alshahrani, Shahid Azam, Abdullah Saad Al-Dughaither, Abdulmajeed Mohammed Al-Hamdan
  • Patent number: 11225444
    Abstract: A method of column control includes: passing a feed stream and a make-up stream through a column; withdrawing an overhead fraction from the column; purging at least a portion of the overhead fraction; cooling at least a portion of the overhead fraction in a heat exchanger and passing it through a reflux drum; withdrawing a purge stream and a distillate stream from the reflux drum, wherein the distillate stream has a constant flow rate; recycling at least a portion of the distillate stream back to the column; and passing at least a portion of the distillate stream to a downstream process.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: January 18, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Abdullah Saad Al-Dughaiter, Shahid Azam, Abdulmajeed Mohammed Al-Hamdan, Dafer Mubarak Alshahrani, Ralf Noack, Tobias Meier, Gabriel Waurick, Heinz Bolt, Andreas Meiswinkel, Wolfgang Müller, Anina Wohl, Hans-Jorge Zander
  • Publication number: 20210130265
    Abstract: A method of column control includes: passing a feed stream and a make-up stream through a column; withdrawing an overhead fraction from the column; purging at least a portion of the overhead fraction; cooling at least a portion of the overhead fraction in a heat exchanger and passing it through a reflux drum; withdrawing a purge stream and a distillate stream from the reflux drum, wherein the distillate stream has a constant flow rate; recycling at least a portion of the distillate stream back to the column; and passing at least a portion of the distillate stream to a downstream process.
    Type: Application
    Filed: December 19, 2017
    Publication date: May 6, 2021
    Inventors: Abdullah Saad Al-Dughaiter, Shahid Azam, Abdulmajeed Mohammed Al-Hamdan, Dafer Mubarak Alshahrani, Ralf Noack, Tobias Meier, Gabriel Waurick, Heinz Bolt, Andreas Meiswinkel, Wolfgang Müller, Anina Wohl, Hans-Jorge Zander
  • Publication number: 20200139334
    Abstract: A method of temperature control includes: passing a feed stream comprising ethylene through a reactor at a feed location; withdrawing an outlet steam comprising linear alpha olefins from the reactor; passing the outlet stream through a condensate vessel, wherein the outlet stream is split into a vapor fraction and a liquid fraction within the condensate vessel; withdrawing the vapor fraction from the condensate vessel and recycling it back to the feed stream; and withdrawing the liquid fraction from the condensate vessel and injecting it into the reactor at an injection location.
    Type: Application
    Filed: December 21, 2017
    Publication date: May 7, 2020
    Inventors: Abdullah Saad Al-Dughaiter, Shahid Azam, Abdulmajeed Mohammed Al-Hamdan, Dafer Mubarak Alshahrani, Ralf Noack, Tobias Meier, Gabriel Waurick, Heinz Bolt, Anina Wohl, Wolfgang Müller, Andreas Meiswinkel, Hans-Jorg Zander
  • Publication number: 20200087582
    Abstract: A method of treating a hydrocarbon stream includes: withdrawing an effluent stream comprising hydrocarbons and polymer from a reactor; contacting the effluent stream with a coolant stream; passing the effluent stream through a heat exchanger; wherein after passing the effluent stream through the heat exchanger, the heat exchanger is substantially free of polymer deposits.
    Type: Application
    Filed: December 19, 2017
    Publication date: March 19, 2020
    Inventors: Dafer Mubarak Alshahrani, Shahid Azam, Abdullah Saad Al-Dughaither, Abdulmajeed Mohammed Al-Hamdan
  • Publication number: 20190351403
    Abstract: A method for preparing a homogenous catalyst for use in preparing a linear alpha olefin includes: preparing a first pre-catalyst solution by mixing a chromium source and a ligand in a first solvent, wherein the first pre-catalyst solution is stored in a first vessel; preparing a second pre-catalyst solution by mixing an organoaluminum compound and a modifier in a second solvent, wherein the second pre-catalyst solution is stored in a second vessel; and simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a reaction vessel, wherein the reaction vessel includes a third solvent.
    Type: Application
    Filed: December 28, 2017
    Publication date: November 21, 2019
    Inventors: Abdullah Saad Al-Dughaither, Shahid Azam, Abdulmajeed Mohammed Al-Hamdan, Dafer Mubarak Alshahrani, Sebastiano Licciulli, Andreas Meiswinkel, Heinz Bolt, Wolfgang Muller, Anina Wohl
  • Publication number: 20190345079
    Abstract: A method of separating linear alpha olefins, comprising: passing a feed stream comprising linear alpha olefins through a first column; distributing a C4? fraction to a top portion of the first column; withdrawing a C6+ fraction from a bottom portion of the first column and passing the C6+ fraction through a second column; distributing a C12+ fraction to a bottom portion of the second column; withdrawing a C10? fraction from a top portion of the second column and passing the C10? fraction through a third column, wherein the C10? fraction is substantially free of polymer; and distributing a C6 fraction to a top portion of the third column.
    Type: Application
    Filed: December 19, 2017
    Publication date: November 14, 2019
    Inventors: Dafer Mubarak Alshahrani, Shahid Azam, Abdullah Saad Al-Dughaither, Abdulmajeed Mohammed Al-Hamdan
  • Publication number: 20190314798
    Abstract: A method for preparing a homogenous catalyst for the production of linear alpha olefins includes: preparing a first pre-catalyst solution comprising a modifier and an organoaluminum compound in a first solvent wherein the first pre-catalyst solution is reacted and stored in a first vessel for a period of time of 1 hour to 90 days; preparing a second pre-catalyst solution comprising a second solvent, a ligand, and a chromium containing compound, wherein the second pre-catalyst solution is stored in a second vessel for a period of time of 1 hour to 90 days; and after a period of time, adding the first pre-catalyst solution to a catalyst pre-formation unit; after the same period of time, adding the second pre-catalyst solution to the catalyst pre-formation unit; forming a homogenous catalyst by mixing the first pre-catalyst solution and the second pre-catalyst solution; adding the homogeneous catalyst to a reaction vessel, wherein the reaction vessel comprises an alpha olefin; and forming the linear alpha olefin
    Type: Application
    Filed: December 21, 2017
    Publication date: October 17, 2019
    Inventors: Abdullah Saad Al-Dughaither, Shahid Azam, Abdulmajeed Mohammed Al-Hamdan, Dafer Mubarak Alshahrani, Sebastiano Licciulli, Anina Wohl, Wolfgang Muller, Heinz Bolt, Andreas Meiswinkel, Tobias Meier, Ralf Noack