Patents Assigned to Topsoe A/S
  • Production of sulphuric acid from a feed gas with varying concentration of sulphur dioxide
    Patent number: 7033565
    Abstract: A process for the production of sulphuric acid from a sulphur dioxide containing feed gas with concentration of SO2 fluctuating between 0 and 100 mole % SO2 comprising the steps of contacting the feed gas with an aqueous solution comprising 0–50% by weight H2SO4 at a temperature between the freezing point of said aqueous solution and 80° C.; and during the contact of the feed gas with the aqueous solution absorbing at least a part of SO2 in the feed gas in the aqueous solution or desorbing at least a part of SO2 from the aqueous solution, wherein the at least a part of SO2 is desorbed by stripping the aqueous solution with the feed gas and passing at least part of the thus treated feed gas to a sulphuric acid plant.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: April 25, 2006
    Assignee: Haldor Topsoe A/S
    Inventors: Kurt Agerbæk Christensen, Peter Schoubye
  • Process for the preparation of ammonia
    Patent number: 7025944
    Abstract: Process for the preparation of ammonia comprising contacting ammonia synthesis gas with one or more catalysts, at least one catalyst having supported ruthenium as the active catalytic material supported on a nitride on a secondary support. A catalyst for use in the above process is provided.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: April 11, 2006
    Assignee: Häldor Topsoe A/S
    Inventors: Svend Erik Nielsen, Claus J. H. Jacobsen, Henrik Udesen, Tine Shim, Niels Kegel Sørensen
  • Reactor for carrying out non-adiabatic reactions
    Patent number: 6962678
    Abstract: A reactor for carrying out endothermic catalytic reaction is provided. The reactor features a metallic ingot with at least one tubular reaction passage extending through the ingot. The reaction passage is adapted to hold a catalyst for endothermic conversion of a feedstock. Provided are inlet passages for introduction of the feedstock into the reaction passage, and outlet passages for withdrawing feedstock. The inlet and outlet passages are provided within the ingot. An electrical heater supplies to the ingot and the reaction passage the heat for the catalytic endothermic conversion of the feedstock.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: November 8, 2005
    Assignee: Haldor Topsoe A/S
    Inventors: Ernst Jørn, Erik Løgsted-Nielsen
  • Process for the preparation of ammonia
    Patent number: 6955797
    Abstract: Process for the preparation of ammonia comprising steps of contacting an ammonia synthesis gas with an ammonia synthesis catalyst arranged as reaction zone in one or more catalyst tubes; cooling the reaction zone by heat conducting relationship with a cooling agent; and withdrawing an ammonia rich effluent stream from the reaction zone.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: October 18, 2005
    Assignee: Haldor Topsoe A/S
    Inventor: Christian Speth
  • Very large autothermal reformer
    Patent number: 6936082
    Abstract: An autothermal reforming process and apparatus including a combustion chamber, at least one catalytic reactor, a duct for leading combustion product from the combustion chamber to the catalytic reactor or reactors, and withdrawal ducts for withdrawing the product of the catalytic reactor or reactors.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: August 30, 2005
    Assignee: Haldor Topsoe A/S
    Inventor: Ivar I. Primdahl
  • Catalyst loading method and apparatus
    Patent number: 6932559
    Abstract: A method of loading particulate catalytic material into a reactor tube and a loading apparatus for use in the method. The method comprises providing a loading tube through which catalyst particles pass in a damped motion. The damped motion is provided by mounting a spirally formed body on the inner wall of each loading tube section. The spirally formed body is formed from a rod having an arbitrarily shaped cross-section and a maximum dimension in any direction of the cross-section of 1/25-½ of the diameter of the loading tube section. The spirally formed body in each section has a pitch, with respect to the diameter of the loading tube section, in the interval of 2-8.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: August 23, 2005
    Assignee: Haldor Topsoe A/S
    Inventors: Michael Boe, Niels Erikstrup
  • Process and reactor for the preparation of hydrogen and carbon monoxide rich gas
    Patent number: 6908571
    Abstract: Soot formation is suppressed in the preparation of hydrogen and/or carbon monoxide rich gas by arranging on at least a surface of an upper portion of a reactor a catalytic material which is active in steam reforming hydrocarbons, introducing a hydrocarbon feedstock and an oxygen-containing atmosphere into the upper portion of the reactor, partially oxidising the feedstock with oxygen in the upper portion of the reactor, and contacting a part of the partially oxidized feedstock with the reforming catalyst in the reactor upper portion.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: June 21, 2005
    Assignee: Haldor Topsoe A/S
    Inventors: Ivar Ivarsen Primdahl, Thomas Sandahl Christensen
  • Process for the selective removal of sulphur compounds from synthesis gas
    Publication number: 20050123462
    Abstract: A process for the selective removal of sulphur compounds from synthesis gas being rich in carbon monoxide and containing hydrogen, carbon monoxide and containing hydrogen, carbon dioxide and steam comprising contacting the synthesis gas at a maximum contact temperature of 100° C. with an absorbent comprising Cu/ZnO compounds and being prepared by thermal decomposition of a corresponding carbonate and activation of the thermal decomposed carbonate with a reducing gas.
    Type: Application
    Filed: February 15, 2003
    Publication date: June 9, 2005
    Applicant: Haldor Topsoe A/S
    Inventors: Jens-Henrik Hansen, Birgitte Hammershoi, Inga Sigurdardotir
  • Process for the recovery of perfluorinated sulphonic acids from spent acid residue
    Patent number: 6891076
    Abstract: Process for the recovery of perfluorinated sulphonic acid from a hydrocarbon residue, comprising the steps of (a) treating the residue with an alkyl ammonium salt of the perfluorinated sulphonic acid or a mixture of an alkyl ammonium salt of the perfluorinated sulphonic acid and the perfluorinated sulphonic acid in an amount being effective to liquefy the residue at ambient temperature; (b) contacting the liquefied residue with water at conditions to obtaining an aqueous extract containing the perfluorinated sulphonic acid and/or the alkyl ammonium salt of the perfluorinated acid into water; and (c) separating water from the aqueous extract to recover the perfluorinated sulphonic acid or the mixture of the acid and the ammonium salt.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: May 10, 2005
    Assignee: Haldor Topsoe A/S
    Inventors: Karsten Laurents, Ole Stahl
  • Process for the immobilization of a homogeneous catalyst, and catalytic material
    Patent number: 6887814
    Abstract: The invention concerns a process for the immobilization of a homogeneous catalyst comprising immobilizing the homogeneous catalyst in zeotype crystals with a non-crystallographic mesopore system and a mesopore volume of the zeotype crystals above 0.25 ml/g. The invention also concerns a catalytic material prepared by the immobilization process.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: May 3, 2005
    Assignee: Haldor Topsoe A/S
    Inventors: Konrad Herbst, Michael Brorson, Iver Schmidt, Claus J. H. Jacobsen
  • Rhenium (IV) sulphide nanotube material and method of preparation
    Patent number: 6887453
    Abstract: A rhenium (IV) sulphide (ReS2) nanotube material and a method of preparation of the rhenium (IV) sulphide (ReS2) nanotube material. The rhenium (IV) sulphide (ReS2) nanotube material comprises hollow cylinders of concentric rhenium (IV) sulphide layers, the ReS2 interlayer distance being between 0.5 to 0.7 nm. Each ReS2 layer consists of a layer of rhenium atoms sandwiched between two layers of sulfur atoms.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: May 3, 2005
    Assignee: Haldor Topsoe A/S
    Inventors: Michael Brorson, Claus J. H. Jacobsen, Thomas Willum Hansen
  • Process for the drying of a hydrocarbon stream
    Patent number: 6887442
    Abstract: The invention concerns a process for the continuous drying of a hydrocarbon stream and comprises contacting the hydrocarbon stream with an ionic, liquid drying agent of a salt of a fluorinated sulphonic acid.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: May 3, 2005
    Assignee: Haldor Topsoe A/S
    Inventor: Sven Ivar Hommeltoft
  • Process for the preparation of methanol
    Patent number: 6881759
    Abstract: The present invention is a novel process for methanol production in a liquid phase reactor from a synthesis gas comprising of hydrogen, carbon dioxide and carbon monoxide. The liquid phase reactor contains a solid catalyst suspended in methanol. In this innovation, methanol acts both as a product and as a suspension medium for the catalyst. The new innovation exploits the condensing conditions for methanol production. By operating at condensing conditions, the methanol partial pressure at equilibrium is higher than the boiling pressure of methanol at the given temperature. Hence the produced methanol of the equilibrium composition condenses creating the potential of more gas to be converted. Since equilibrium is not a limiting factor, high conversions can be obtained.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: April 19, 2005
    Assignee: Haldor Topsoe A/S
    Inventors: Poul Erik Højlund Nielsen, Cecilia Jaksland, Jens Perregaard
  • Process for the production of iron oxide containing catalysts
    Patent number: 6875723
    Abstract: A process for the production mixed metal oxide containing catalysts comprising the steps of: dissolution of metals Me=Fe, Ni, Al, Cu, Co, Zn, Cr, in nitric acid providing an acid solution of metal mixed nitrate products, aluminium can be added either as nitrate or hydroxide; addition of a carbonhydrate, an amino acid and/or a carboxylic acid; decomposition at 250-700° C. with free air supply of the acid solution by spraying onto the inner surface of one or more rotary kilns, into a spray calcination fluid bed, into a tower kiln or into a steel band conveyor furnace to iron oxide and NOx; and optionally regeneration of the formed NOx to concentrated nitric acid and recycling of produced nitric acid to the first step.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: April 5, 2005
    Assignee: Haldor Topsoe A/S
    Inventors: Keld Johansen, Petru Gordes
  • High temperature sealing material
    Patent number: 6828263
    Abstract: Glass composition for use as sealing material in fuel cells, comprising a glass matrix with main components consisting of SiO2, Al2O3, and one or more compounds from group I metal oxides and/or group II metal oxides, and a filler material evenly dispersed in the matrix, wherein the filler material consists of particles of one or more refractive compounds from the group: MgO—MgAl2O4, stabilized zirconia, rare earth oxides, (Mg,Ca)SiO3, Mg2SiO4, MgSiO3, CaSiO3, CaZrO3, ThO2, TiO2, MIIAlSi2O8, where MII=Ca, Sr or Ba.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: December 7, 2004
    Assignee: Haldor Topsoe A/S
    Inventors: Jørgen Gutzon Larsen, Peter Halvor Larsen, Carsten Bagger
  • Method of making solid oxide fuel cells and stacks
    Patent number: 6822193
    Abstract: The invention concerns a method for making Solid Oxide Fuel Cells (SOFC) and stacks. The method concerns assembling the layers required for the formation of a fuel cell, sintering the fuel cell and thereafter shaping the cell. When making a fuel cell stack, the sintered fuel cells are assembled with the interconnect, spacing and sealing material to form a stack of at least one stack element, followed by shaping the stack. Shaping is carried out in various ways and maximum tolerances of 1% are obtained.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: November 23, 2004
    Assignee: Haldor Topsoe A/S
    Inventors: Christian Olsen, Jens Christiansen
  • Process of paraffin hydrocarbon isomerisation catalysed by an ionic liquid in the presence of a cyclic hydrocarbon additive
    Patent number: 6797853
    Abstract: A process for the conversion of linear and/or branched paraffins hydrocarbons, catalysed by an ionic liquid catalyst, in the presence of a cyclic hydrocarbon additive containing a tertiary carbon atom. The presence of the specific hydrocarbon additives influences the reaction mechanism by increasing the selectivity towards the formation of paraffin hydrocarbons with a higher degree of branching.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: September 28, 2004
    Assignee: Haldor Topsoe A/S
    Inventors: Jindrich Houzvicka, John Zavilla, Konrad Herbst
  • Porous planar electrode support in a solid oxide fuel cell
    Patent number: 6783880
    Abstract: Solid oxide fuel cell with a planar support in form of a porous plate structure supporting on one planar surface a layer of electrode active material and with internally elongated gas supply channels formed inside the structure.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: August 31, 2004
    Assignee: Haldor Topsoe A/S
    Inventor: Niels Christiansen
  • Process for the preparation of ammonia
    Patent number: 6780387
    Abstract: Process for the preparation of ammonia by contacting an ammonia synthesis gas with ammonia catalyst particles arranged in a fixed bed, wherein the fixed bed comprises catalyst particles of the ammonia catalyst with a particle size being in the range of <1.5 mm and ≧2.2 mm.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: August 24, 2004
    Assignee: Haldor Topsoe A/S
    Inventors: Claus J. H. Jacobsen, Michael Boe
  • Method for the removal of particulate matter from aqueous suspension
    Patent number: 6773601
    Abstract: Method for the removal of particulate matter from aqueous suspension comprising steps of establishing value of pH and of Zeta potential of particles in the suspension; providing a porous filter having a membrane layer consisting of at least a metal-oxide with a Zeta potential at the pH value of the suspension having same polarity of the Zeta potential as the particles in the suspension; passing the suspension through the porous filter; and withdrawing a filtrate.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: August 10, 2004
    Assignee: Haldor Topsoe A/S
    Inventor: Niels Christiansen