Patents by Inventor Stefan Andersen

Stefan Andersen 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: 20250145900
    Abstract: The present invention relates to a composition comprising, on water free basis, at least 80 wt % molecules comprising from 8 to 35 C-atoms, said composition having a flash point above 60° C. and comprising, on water free basis, 9.5-12 wt % H, 3-45 wt % O and less than 5 wt ppm halogens, the use of such a composition as a marine fuel and a process for producing such a composition by partial hydrodeoxygenation.
    Type: Application
    Filed: March 7, 2023
    Publication date: May 8, 2025
    Applicant: Topsoe A/S
    Inventors: Stefan ANDERSEN, Magnus Zingler STUMMANN, Asad NAVID
  • Publication number: 20250084316
    Abstract: Process and plant for hydrotreating a liquid oil feedstock stream comprising the steps of i) conducting the liquid oil feedstock stream to a stabilization step by reacting the liquid oil stream with hydrogen in the presence of a catalyst for producing a stabilized composition, and separating therefrom: a stabilized stream comprising a gas phase, and a stabilized liquid oil stream; ii) providing a main hydrodeoxygenation (HDO) step, comprising: ii)-1 conducting at least a portion of said stabilized stream comprising a gas phase, or a stabilized feed stream combining at least a portion of said stabilized stream comprising a gas phase and a portion of said stabilized liquid oil stream, to a main hydrodeoxygenation (HDO) step in a first bed active in hydrodeoxygenation (HDO), thereby producing a first main hydrotreated effluent stream; ii-2) combining at least a portion of said stabilized liquid oil stream with said first main hydrotreated effl-uent stream, thereby producing a first mixed stabilized gas-liquid oi
    Type: Application
    Filed: December 20, 2022
    Publication date: March 13, 2025
    Applicant: TOPSOE A/S
    Inventor: Stefan ANDERSEN
  • Publication number: 20240409818
    Abstract: A process and a process plant for conversion of a reactive liquid feedstock stream containing at least 40 wt % carbon, including the steps of directing a diluent stream, having a first combined hydrogen consumption potential and the reactive liquid feedstock stream as a combined stream having a first hydrogen consumption potential, to contact a material catalytically active in hydrotreatment which during operation has a lowest temperature of at least 80° C. and a highest temperature of less than 250° C. in the presence of dihydrogen, withdrawing a stabilized composition stream having a second combined hydrogen consumption potential which is less than 80% and more than 10% of the first hydrogen consumption potential, and providing an amount of the liquid phase of said stabilized composition stream as said diluent stream wherein the hydrogen consumption potential for a composition is the amount of hydrogen required for conversion of the composition into a saturated hydrocarbon.
    Type: Application
    Filed: November 3, 2022
    Publication date: December 12, 2024
    Applicant: Topsoe A/S
    Inventors: Stefan ANDERSEN, Magnus Zingler STUMMANN
  • Publication number: 20240228889
    Abstract: A process, a process plant and equipment for conversion of a feedstock rich in oxygenates to a hydrocarbon including directing the feedstock in combination with a recycle gas stream to a hydroprocessing step, to provide a two-phase hydroprocessed process stream including at least hydrogen, methane and hydrocarbons, combining a methane lean stream of hydrocarbons being liquid at ambient temperature, with a methane donor stream being either (i) the two-phase hydroprocessed process stream including methane or (ii) a gaseous stream derived from the two-phase hydroprocessed process stream by phase separation, to provide a multiple-phase combined stream, separating the multiple-phase combined stream into at least a hydrogen rich gas stream and a rich liquid hydrocarbon stream, in a desorption step desorbing an amount of methane from the rich liquid hydrocarbon stream, to provide a methane rich gas phase and a liquid product stream of hydrocarbons.
    Type: Application
    Filed: May 6, 2022
    Publication date: July 11, 2024
    Applicant: TOPSOE A/S
    Inventors: Steven W. STUPIN, Stefan ANDERSEN, Priyesh THAKKER
  • Publication number: 20240026232
    Abstract: A broad aspect of the disclosure relates to a process for hydroprocessing of a hydrocarbonaceous feedstock stream comprising the steps of directing said hydrocarbonaceous feedstock stream to contact a material catalytically active in hydroprocessing thus providing a hydroprocessed stream separating said hydroprocessed stream in a purified hydrocarbon stream, sour water and a separation off-gas, separating said sour water in a purified water stream and sour stream, directing said sour stream as a liquid sour recycle stream either to contact said material catalytically active in hydroprocessing or to be combined with said hydroprocessed stream prior to step b, said material catalytically active in hydroprocessing comprising at least one base metal from Group 5, 8, 9 or 10 of the periodic table in sulfided state. This has the benefit of minimizing or even avoiding the need for addition of sulfur to keep the catalytically active material in the active sulfided state.
    Type: Application
    Filed: December 16, 2021
    Publication date: January 25, 2024
    Applicant: TOPSOE A/S
    Inventor: Stefan ANDERSEN
  • Publication number: 20210324275
    Abstract: A process for separation of a liquid phase from a gas phase and a process for production of a hydrocarbon product employing such a separation as well as a fractionation section and a hydrocracker section for carrying out such processes. The separation process includes: directing a feed for separation to a feed inlet of a means of separation; directing a stripping medium to a stripping medium inlet of the means of separation; withdrawing a liquid product stream from a means of separation; withdrawing a gaseous fraction comprising the stripping medium from the means of separation; directing the stripping medium fraction or the gaseous fraction as a recycled stripping medium; pressurizing at least an amount of the recycled stripping medium and directing it as the stripping medium, wherein the stripping medium comprises at least 80% vol/vol % of gases from the group comprising N2, H2, He, Ar, Ne and CO2.
    Type: Application
    Filed: October 22, 2019
    Publication date: October 21, 2021
    Applicant: HALDOR TOPSØE A/S
    Inventor: Stefan ANDERSEN
  • Patent number: 10072222
    Abstract: In a broad aspect the present disclosure relates to a process plant and a process for upgrading a hydrocarbon mixture, withdrawn as a direct stream from a crude distillation unit and an initial boiling point below 200° C., and a fraction of at least 5% boiling above 500° C., 550° C. or 650° C. comprising the steps of a. directing said hydrocarbon mixture to a vacuum flasher unit, b. withdrawing a heavy hydrocarbon fraction from said vacuum flasher unit, c. withdrawing a light hydrocarbon mixture for hydrocrackingfrom said vacuum flasher unit, d. directing said light hydrocarbon mixture for hydrocracking and a stream rich in hydrogen to con-tact a material catalytically active in hydrocracking, e. withdrawing a hydrocracked stream of hydrocarbon from said hydrocracker. with the associated benefit of limiting the amount of asphaltenes, metals and other heavy components contacting said material catalytically active in hydrocracking.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: September 11, 2018
    Assignee: Haldor Topsoe A/S
    Inventors: Stefan Andersen, Ole Frej Alkilde
  • Publication number: 20170267938
    Abstract: In a broad aspect the present disclosure relates to a process plant and a process for upgrading a hydrocarbon mixture, withdrawn as a direct stream from a crude distillation unit and an initial boiling point below 200° C., and a fraction of at least 5% boiling above 500° C., 550° C. or 650° C. comprising the steps of a. directing said hydrocarbon mixture to a vacuum flasher unit, b. withdrawing a heavy hydrocarbon fraction from said vacuum flasher unit, c. withdrawing a light hydrocarbon mixture for hydrocracking from said vacuum flasher unit, d. directing said light hydrocarbon mixture for hydrocracking and a stream rich in hydrogen to con-tact a material catalytically active in hydrocracking, e. withdrawing a hydrocracked stream of hydrocarbon from said hydrocracker. with the associated benefit of limiting the amount of asphaltenes, metals and other heavy components contacting said material catalytically active in hydrocracking.
    Type: Application
    Filed: December 16, 2015
    Publication date: September 21, 2017
    Applicant: Haldor Topsøe A/S
    Inventors: Stefan Andersen, Ole Frej Alkilde
  • Patent number: 9464237
    Abstract: The invention relates to a process for starting up a gas-to-liquid process including the production of synthesis gas and a downstream GTL process. The synthesis gas is produced by the use of autothermal reforming (ATR) or catalytic partial oxidation (CPO) and during the starting period the effluent gas from the ATR or CPO is significantly changed to form an off-gas recycle which is fed to the ATR or CPO. When the downstream GTL process is running, the recycle to ATR or CPO is shifted to its off-gas.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: October 11, 2016
    Assignee: Haldor Topsoe A/S
    Inventors: Per Juul Dahl, Stefan Andersen
  • Publication number: 20150232763
    Abstract: The invention relates to a process for starting up a gas-to-liquid process including the production of synthesis gas and a downstream GTL process. The synthesis gas is produced by the use of autothermal reforming (ATR) or catalytic partial oxidation (CPO) and during the starting period the effluent gas from the ATR or CPO is significantly changed to form an off-gas recycle which is fed to the ATR or CPO. When the downstream GTL process is running, the recycle to ATR or CPO is shifted to its off-gas.
    Type: Application
    Filed: August 15, 2013
    Publication date: August 20, 2015
    Applicant: Haldor Topsoe A/S
    Inventors: Per Juul Dahl, Stefan Andersen