Patents by Inventor Abderrahmane Chettouf

Abderrahmane Chettouf 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).

  • Publication number: 20190270937
    Abstract: The present application relates to a process for producing normally gaseous, normally liquid, and optionally normally solid hydrocarbons from synthesis gas in a three-phase reactor, said reactor comprising a top middle and bottom part wherein the bottom and top part are fluidly connected via one or more reactor tubes, wherein one or more reactor tubes comprise randomly stacked catalyst bodies held stationary in the reactor tube and the reactor is at least partially filled with a liquid medium, said process comprising the steps of: (i) introducing the synthesis gas into the reactor via the bottom part; and (ii) contacting the synthesis gas with a stationary catalyst to catalytically convert the synthesis gas at an elevated temperature to obtain the normally gaseous, normally liquid, and optionally normally solid hydrocarbons from synthesis gas; (iii) withdrawing the normally gaseous, normally liquid, and optionally normally solid hydrocarbons; wherein the catalyst bodies have an open celled foam structure.
    Type: Application
    Filed: October 27, 2017
    Publication date: September 5, 2019
    Applicant: SHELL OIL COMPANY
    Inventors: Ronald Jan DOGTEROM, Gerard Pieter VAN DER LAAN, Abderrahmane CHETTOUF
  • Patent number: 10399061
    Abstract: The Fischer-Tropsch process can be used for the conversion of hydrocarbonaceous feed stocks into normally liquid and/or solid hydrocarbons. The feed stock (e.g. natural gas, associated gas and/or coal-bed methane, coal) is converted in a first step into a mixture of hydrogen and carbon monoxide (this mixture is often referred to as synthesis gas or syngas). The synthesis gas (or syngas) is then converted in one or more steps over a suitable catalyst at elevated temperature and pressure into paraffinic compounds ranging from methane to high molecular weight molecules comprising up to 200 carbon atoms, or, under particular circumstances, even more. The present invention relates to a catalyst, a method for manufacturing said catalyst. The present invention further relates to a catalyst obtainable by said method. The present invention further relates to a multi tubular reactor comprising said catalyst.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: September 3, 2019
    Assignee: SHELL OIL COMPANY
    Inventors: Abderrahmane Chettouf, Johan Peter Den Breejen, Ronald Jan Dogterom, Matthieu Simon Henri Fleys
  • Publication number: 20190262802
    Abstract: The present application relates to a Fischer-Tropsch catalyst body having an open-celled foam structure, said catalyst body comprising a substrate material and a catalytic active material or precursor thereof wherein: —The substrate material: ?is a metal alloy or ceramic material; ?having a surface roughness of 50 ?m or more; ?has an open-celled foam structure with at least 15 pores per inch; and —The catalytically active material or precursor thereof which: ?is present on the surface of the substrate material; ?comprises cobalt, iron, ruthenium or a combination thereof; and ?comprises a catalyst support selected from titania, alumina or silica.
    Type: Application
    Filed: October 27, 2017
    Publication date: August 29, 2019
    Inventors: Ronald Jan DOGTEROM, Gerard Pieter VAN DER LAAN, Abderrahmane CHETTOUF
  • Publication number: 20170106354
    Abstract: The Fischer-Tropsch process can be used for the conversion of hydrocarbonaceous feed stocks into normally liquid and/or solid hydrocarbons. The feed stock (e.g. natural gas, associated gas and/or coal-bed methane, coal) is converted in a first step into a mixture of hydrogen and carbon monoxide (this mixture is often referred to as synthesis gas or syngas). The synthesis gas (or syngas) is then converted in one or more steps over a suitable catalyst at elevated temperature and pressure into paraffinic compounds ranging from methane to high molecular weight molecules comprising up to 200 carbon atoms, or, under particular circumstances, even more. The present invention relates to a catalyst, a method for manufacturing said catalyst. The present invention further relates to a catalyst obtainable by said method. The present invention further relates to a multi tubular reactor comprising said catalyst.
    Type: Application
    Filed: March 19, 2015
    Publication date: April 20, 2017
    Applicant: SHELL OIL COMPANY
    Inventors: Abderrahmane CHETTOUF, Johan Peter DEN BREEJEN, Ronald Jan DOGTEROM, Matthieu Simon Henri FLEYS
  • Patent number: 8518849
    Abstract: A method of supporting a hydrocarbon synthesis catalyst material comprising a catalytically active metal and a carrier material on a metallic substrate in which the catalyst material is applied to the substrate and is heated to form a catalyst material layer fixed to the substrate with cracks having sub-millimeter widths formed in the layer creating domains with the range of the relative sizes of the domains being approximately 1:5.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: August 27, 2013
    Assignee: Shell Oil Company
    Inventors: Abderrahmane Chettouf, Gerardus Petrus Lambertus Niesen, Marinus Johannes Reynhout, David Schaddenhorst
  • Patent number: 8071069
    Abstract: The invention relates to a process for the purification of titania by treating the titania with an aqueous solution having one or more ammonium compounds at elevated temperatures, separating the titania from the aqueous solution, drying the titania and, optionally, calcining the dried titania. More especially the invention relates to the removal of sulphur (mainly present in the form of sulphate compounds) from the titania. The titania purified according to the above process is especially suitable for use as a catalyst carrier.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: December 6, 2011
    Assignee: Shell Oil Company
    Inventors: Abderrahmane Chettouf, Carolus Matthias Anna Maria Mesters, Gerardus Petrus Lambertus Niesen
  • Publication number: 20090312179
    Abstract: A method of supporting a hydrocarbon synthesis catalyst material comprising a catalytically active metal and a carrier material on a substrate comprising the steps of: (a) applying the catalyst material to the substrate; and (b) heating the catalyst material to form a catalyst material layer fixed to the substrate, characterised in that—the catalyst carrier is a porous inorganic refractory oxide or precursor therefor; the catalyst material applied in step (a) comprises 60 to 90 weight % solvent calculated on the total weight of the catalyst material layer; when the catalyst material is subjected to the heating step (b) it comprises at most 10 weight % of solvent, calculated on the total weight of the catalyst material layer; in heating step (b) the catalyst material is heated to a temperature in the range between 250° C. and 800° C.; cracks having sub-millimetre widths are uniformly formed in the layer; after step (b) the catalyst material layer has a thickness of 5-200 microns.
    Type: Application
    Filed: July 9, 2007
    Publication date: December 17, 2009
    Inventors: Abderrahmane Chettouf, Gerardus Petrus Lambertus Niesen, Marinus Johannes Reynhout, David Schaddenhorst
  • Publication number: 20040179995
    Abstract: The invention relates to a process for the purification of titania by treating the titania with an aqueous solution comprising one or more ammonium compounds at elevated temperatures, separating the titania from the aqueous solution, drying the titania and, optionally, calcination of the dried titania. More especially the invention relates to the removal of sulphur (mainly present in the form of sulphate compounds) from the titania. The titania purified according to the above process is especially suitable for the use as catalyst carrier.
    Type: Application
    Filed: February 20, 2004
    Publication date: September 16, 2004
    Inventors: Abderrahmane Chettouf, Carolus Matthias Anna Maria Mesters, Gerardus Petrus Lambertus Niesen