Abstract: The present disclosure relates in a broad form to a pseudo-isothermal flow reactor (100) for an exothermal reaction comprising at least two reaction enclosures (108, 114) and a cooling medium enclosure (102) configured to hold a cooling medium under pressure at the boiling point of said cooling medium, said reaction enclosures (108, 114) having an outer surface configured to be in thermal contact with the cooling medium, and each of said reaction enclosures (108, 114) having an inlet and an outlet with the associated benefit of enabling a two-stage pseudo-isothermal operation while only requiring a single cooling medium enclosure (102) and only single cooling medium circuit.
Type:
Application
Filed:
March 31, 2015
Publication date:
January 26, 2017
Applicant:
Haldor Topsøes A/S
Inventors:
Christian Wix, Michael Boe, Anders Helbo Hansen
Abstract: NH3—SCR catalyst, containing iron promoted beta-zeolite, cerium oxide and titanium oxide and optionally further containing at least one of tungsten oxide, neodymium oxide, silicon oxide and diatomaceous earth, and method of preparation thereof.
Type:
Grant
Filed:
August 31, 2012
Date of Patent:
December 27, 2016
Assignee:
Haldor Topsoe A/S
Inventors:
Lived J. Lemus-Yegres, Niklas Bengt Jakobsson
Abstract: The present invention relates to a process for heating an ATR or PDX comprising the steps of heating a process stream by at least one heating means, admitting the heated process stream to an ATR or PDX reactor through a main burner, and heating the ATR or PDX reactor to or above autoignition temperature of the process stream via the heated process stream.
Type:
Application
Filed:
April 8, 2015
Publication date:
December 1, 2016
Applicant:
Haldor Topsøe A/S
Inventors:
Per Juul Dahl, Thomas Sandahl Christensen
Abstract: Process and reaction system for the preparation of methanol comprising two reaction units, wherein a first unit is operated on a mixture of fresh synthesis gas and unconverted synthesis gas and a second unit solely with unconverted synthesis gas.
Type:
Grant
Filed:
November 19, 2012
Date of Patent:
November 29, 2016
Assignee:
Haldor Topsoe A/S
Inventors:
Marcus Almqvist, Christophe Duwig, Per Juul Dahl
Abstract: The present invention relates to a process plant for the oxidation of SO2 to SO3 in a process gas, said process plant comprising a heat exchanger configured for heating the process gas by heat exchange with an oxidized process gas and/or a further oxidized process gas by providing thermal contact between said process gas and said oxidized process gas and/or said further oxidized process gas, a first zone of material catalytically active in oxidation of SO2 to SO3, and a boiler configured for containing steam being heated by the oxidized process gas and/or the further oxidized process after said oxidized process gas has been cooled in the heat exchanger characterized in the cooled oxidized process gas in the boiler being non-condensing with the benefit of providing the possibility for a smaller heat exchanger which may be made with only moderate corrosion resistant materials, compared to a process plant according to the prior art, as well as a related process.
Abstract: A grid module (2a, 2b) for a catalyst support comprising one or more sides arranged with a module connecting part (11) to engage in a tongue/groove connection with a matching receiving connecting part (8a, 8b) on an external structure (7a, 7b).
Abstract: Process for the production of a synthesis gas for use in the production of chemical compounds from a hydrocarbon feed stock containing higher hydrocarbons comprising the steps of: (a) in a pre-reforming stage pre-reforming the feed stock with steam to a pre-reformed gas containing methane, hydrogen, carbon monoxide and carbon dioxide; and (b) cooling the pre-reformed gas to below its dewpoint and removing condensed water; and (c) reducing the amount of carbon dioxide the in the pre-reformed gas from step (b) to obtain a module of (H2—CO2)/(CO+CO2) of between 1.0 and 3.8 in the pre-reformed gas.
Abstract: In a broad form the present invention relates to a method for oxidation of a species comprising sulfur in an oxidation state below +4, such as H2S, CS2, COS and S8 vapor, to SO2 said method comprising the step of contacting the gas and an oxidant with a catalytically active material consisting of one or more elements taken from the group consisting of V, W, Ce, Mo, Fe, Ca, Mg, Si, Ti and Al in elemental, oxide, carbide or sulfide form, optionally with the presence of other elements in a concentration below 1 wt %, at a temperature between 180° C. and 290° C., 330° C., 360° C. or 450° C., with the associated benefit of such a temperature being highly energy effective, and the benefit of said elements having a low tendency to form sulfates under the conditions, with the related benefit of an increased stability of the catalytically active material. The other elements present may be catalytically active noble metals or impurities in the listed materials.
Type:
Application
Filed:
November 28, 2014
Publication date:
October 13, 2016
Applicant:
Haldor Topsoe A/S
Inventors:
Peter Schoubye, Joakim Reimer Thøgersen
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.
Abstract: In a process for the preparation of methanolin parallel reactors, comprising the steps of (a) reacting carbon oxides and hydrogen in the presence of a methanol catalyst in a first methanol reactor to obtain a first methanol-containing effluent, (b) introducing and reacting unconverted synthesis gas in a second methanol reactor in the presence of a methanol catalyst to obtain a second methanol-containing effluent, the first methanol reactor and the second methanol reactor being connected in parallel, (c) combining the first and second effluent, and (d) cooling and separating the combined and cooled effluent into a methanol-containing liquid phase and unconverted synthesis gas, the methanol catalyst in the first methanol reactor is indirectly cooled by boiling water and the methanol catalyst in the second methanol reactor is either directly or indirectly cooled by the unconverted synthesis gas prior to conversion into the second effluent.
Abstract: A method for cleaning a sulphur dioxide containing off-gas by selective oxidation of carbon monoxide and volatile organic compounds in the off-gas with reduced formation of sulphur trioxide comprising the step of contacting the off-gas with an oxidation catalyst consisting of palladium and vanadium oxide supported on a carrier.
Type:
Grant
Filed:
October 25, 2012
Date of Patent:
October 11, 2016
Assignee:
Haldor Topsoe A/S
Inventors:
Francesco Castellino, Niklas B. Jakobsson
Abstract: Process for the direct synthesis of Cu-SSZ-13 from a synthesis mixture comprising water, at least one silicon source, at least one Al source, at least one Cu source, at least one polyamine for complexing with Cu, and a single organic structure directing agent. A Cu containing molecular sieve having the framework structure of SSZ-13, obtainable by the process and use of the Cu containing molecular sieve.
Abstract: The invention relates to the production of synthesis gas by means of particularly a series arrangement of heat exchange reforming and autothermal reforming stages, in which the heat required for the reforming reactions in the heat exchange reforming stage, is provided by hot effluent synthesis gas from the autothermal reforming stage. More particularly, the invention relates to optimisation of the operation and control of an arrangement of heat exchange reforming and autothermal reforming stages and introduction of an additional waste heat boiler.
Type:
Grant
Filed:
June 12, 2013
Date of Patent:
September 6, 2016
Assignee:
Haldor Topsoe A/S
Inventors:
Lari Bjerg Knudsen, Martin Frahm Jensen
Abstract: The invention relates to a process for the production of synthesis gas by the use of autothermal reforming or catalytic partial oxidation in which, after removal of water, effluent gas from the ATR or CPO is recycled to the feed of the ATR or CPO.
Abstract: A burner with a central oxidizer supply tube and an outer concentric fuel supply tube has a recycle gas duct arranged between the central oxidizer supply tube and the outer concentric fuel supply tube.
Abstract: An egg-shell catalyst consisting of an active compound in the form of an alloy of nickel and one of iridium, rhodium and ruthenium, on a support comprising alumina, zirconia, magnesia, titania or combinations thereof. The catalyst is used in a process for the steam reforming of hydrocarbons.
Type:
Grant
Filed:
November 25, 2014
Date of Patent:
July 19, 2016
Assignee:
Haldor Topsoe A/S
Inventors:
Martin Skov Skjøth-Rasmussen, Fernando Morales Cano, Jens-Henrik Bak Hansen, Martin Østberg, Thomas Sandahl Christensen
Abstract: A process for the preparation of lactic acid and 2-hydroxy-3-butenoic acid or esters thereof from a sugar in the presence of a metallo-silicate material, a metal ion and a solvent, wherein the metal ion is selected from one or more of the group consisting of potassium ions, sodium ions, lithium ions, rubidium ions and caesium ions.
Type:
Application
Filed:
August 15, 2014
Publication date:
June 23, 2016
Applicant:
Haldor Topsøe A/S
Inventors:
Martin Spangsberg Holm, Irantzu Sadaba Zubiri, Søren Tolborg, Christian Mårup Osmundsen, Esben Taarning
Abstract: The present invention provides a method for recovering hydrogen from hydrogen sulfide using a supported silver catalyst, and a method for purifying a gas stream containing hydrogen sulfide using such a catalyst.
Abstract: A process for producing high purity carbon monoxide (CO) by membrane purification of CO produced in a solid oxide electrolysis cell (SOEC) comprises the steps of generating a gaseous mixture of CO and CO2 by SOEC electrolysis of CO2, applying a moderate pressure on the retentate side of the membrane in one or more membrane units connected to the exit of the SOEC via a compressor or an ejector, applying a lower pressure than the moderate pressure on the permeate side of the membrane, splitting the retentate stream, which is now enriched in CO, into two separate parts, expanding the first part of the retentate stream to reach the permeate low pressure conditions, leading the above-mentioned part of the retentate to the permeate side of the membrane to lower the partial pressure of CO2 on this side, and recycling the outlet permeate stream back to the SOEC as a feed gas together with fresh CO2.
Abstract: A process for the conversion of natural gas to hydrocarbon products by (a) mixing natural gas with a small amount of hydrogen, (b) purifying the mixture from (a) to obtain purified natural gas, (c) mixing the purified natural gas from (b) with steam to obtain the desired steam-to-carbon (S/C) ratio, (d) mixing the natural gas/steam mixture from (c) with tail gas from the downstream Fischer-Tropsch synthesis and converting the mixture into a synthesis gas, (e) cooling the synthesis gas from (d) and condensing out the process water from it, (f) leading the dry synthesis gas from (e) to a carbon dioxide removal section, and (g) sending the CO2-deprived synthesis gas to the downstream Fischer-Tropsch synthesis unit as a make-up gas. The carbon dioxide removed from the syngas in step (f) is either vented or kept for other use without any part of it being recycled.
Type:
Grant
Filed:
December 1, 2014
Date of Patent:
May 31, 2016
Assignee:
Haldor Topsoe A/S
Inventors:
Kristian Lindell, Thomas Sandahl Christensen, Michael Hultqvist, Kim Aasberg-Petersen