Abstract: The following invention regards a process of demethylating a methyl ester of methionine or its hydroxy analog and producing methane thiol as a side-product. The methionine and its hydroxy analog are suitable as an animal feed additive and as a food additive. The methane thiol may be consumed in a hydrothiolation step such as in a step of preparing the methyl ester of methionine or its hydroxy analog from from methyl vinyl glycolate.
Abstract: The present invention relates to multi-bed catalytic reactor with a cylindrical shape comprising a mixing device mounted between two catalyst beds in the reactor, said mixing device has a circular outer rim which corresponds to the inner wall of the reactor, the mixing device comprises; collecting means disposed in a collecting section for collecting fluid from an up¬stream catalytic bed, mixing means disposed in a mixing section for mixing the collected fluid comprising guide vanes and guide ramps, and discharging means disposed in a discharging section for discharging the mixed fluid to a down-stream catalytic bed; wherein the collecting section, the mixing section and the discharging section are disposed outside the center of the circular cross-section of the reactor, as well as associated methods for mixing and the use of such a mixing device in catalytic reactors.
Type:
Grant
Filed:
November 3, 2017
Date of Patent:
March 9, 2021
Assignee:
Haldor Topsoe A/S
Inventors:
Olav Holm-Christensen, Karthik Gopal Manoharan, Klaus Risbjerg Jarlkov, Jacob Brix
Abstract: Oxygen is removed from a gas feed such as a landfill gas, a digester gas or an industrial CO2 off-gas by heating the feed gas, optionally removing siloxanes and silanols from the heated feed gas, optionally removing part of the sulfur-containing compounds in the heated feed gas, injecting one or more reactants for oxygen conversion into the heated feed gas, carrying out a selective catalytic conversion of any or all of the volatile organic compounds (VOCs) present in the gas, including sulfur-containing compounds, chlorine-containing compounds and any of the reactants injected, in at least one suitable reactor, and cleaning the resulting oxygen-depleted gas. The reactants to be injected comprise one or more of H2, CO, ammonia, urea, methanol, ethanol and dimethyl ether (DME).
Abstract: A method for coating an interconnect for a solid oxide cell (SOC) stack comprises providing an interconnect substrate comprising Cr and Fe, coating the interconnect substrate with a first metallic layer by electrodeposition, coating the resulting structure with a second layer of metallic cobalt by electrodeposition and coating the resulting structure with a layer of metallic copper by ion-exchange plating. This way, a metallic copper-cobalt coating is formed on the interconnect.
Type:
Grant
Filed:
November 22, 2017
Date of Patent:
February 2, 2021
Assignee:
Haldor Topsoe A/S
Inventors:
Tobias Holt Nørby, Bengt Peter Gustav Blennow, Rainer Küngas, Jeppe Rass-Hansen, Thomas Heiredal-Clausen
Abstract: Method for the preparation of synthesis gas by combining electrolysis of water, autothermal reforming and heat exchange reforming of a hydrocarbon feed stock.
Type:
Grant
Filed:
July 20, 2018
Date of Patent:
January 12, 2021
Assignee:
Haldor Topsoe A/S
Inventors:
Kim Aasberg-Petersen, Pat A. Han, Peter Mølgaard Mortensen
Abstract: A bifunctional catalyst for conversion of oxygenates, said bifunctional catalyst comprising zeolite, alumina binder, Zn and P, wherein P is evenly distributed across the catalyst.
Abstract: Process for the conversion of oxygenates to C5+ hydrocarbons boiling in the gasoline boiling range, comprising the steps of continuously a) providing one or more feed streams of one or more oxygenate compounds; b) heating the one or more feed streams to an inlet temperature of one or more downstream conversion reactors; c) introducing the one or more heated feed stream into inlet of the one or more conversion reactors; d) converting in the one or more conversion reactors the one or more heated feed stream in presence of catalyst to a converted oxygenate product comprising C5+ hydrocarbons; e) withdrawing from the one or more conversion reactors the converted oxygenate product; f) determining at outlet of the one or more conversion reactors amount of the one or more unconverted oxygenate compounds in the withdrawn converted oxygenate product; g) separating the converted oxygenate product into a C4? hydrocarbon fraction, a fraction with the C5+ hydrocarbons boiling in the gasoline boiling range and a fraction c
Abstract: In an adiabatic axial flow converter, in which process gas passes from an outer annulus via a catalyst bed, wherein the process gas is converted to a product, to an inner centre tube, the catalyst bed comprises at least one module comprising one or more catalyst layers. Feed means are arranged to provide a flow of process gas from the outer annulus to an inlet part of one or more modules, and collector means are arranged to provide a flow of product stream of converted process gas which passes axially through the catalyst bed of one or more of the modules to the centre tube.
Abstract: A fuel cell reactor, preferably a solid oxide fuel cell (SOFC) reactor, for performing direct conversion of a hydrocarbon-containing gas to a higher hydrocarbons product is confined by walls, where reactants are flown in the anode compartments and air is introduced to the cathode compartments, and where oxygen is transferred from one side of the walls to the other side to promote or inhibit a chemical reaction. The process for direct conversion of a hydrocarbon-containing gas to a higher hydrocarbons product takes place in the anode compartment of the reactor, in which produced hydrogen, limiting the conversion to the equilibrium, is reacted in situ with oxygen ions transferred from the cathode compartment to produce steam, thereby removing the equilibrium-limiting hydrogen from the reaction.
Abstract: A method and reactor for performing exothermic reactions with parallel operated catalyst modules arranged in stacked order within a pressure shell and adapted to axial flow of process gas through one or more catalyst layers and at least one catalyst layer cooled by an intrabed heat exchanger.
Type:
Application
Filed:
December 19, 2018
Publication date:
November 26, 2020
Applicant:
Haldor Topsøe A/S
Inventors:
Christian Henrik Speth, Tommy Lykke Wind, Uffe Bach Thomsen, Anders Helbo Hansen
Abstract: A process for the removal of nitrous oxide (N2O) contained in a process off-gas in an axial flow reactor. The process includes the steps of (a) adding an amount of reducing agent into the process off-gas; (b) in a first stage passing in axial flow direction the process off-gas admixed with the reducing agent through a first monolithic shaped catalyst active in decomposing nitrous oxide by reaction with the reducing agent to provide a gas with a reduced amount of nitrous oxide and residual amounts of reducing agent; and (c) in a second stage passing the gas with a reduced amount of nitrous oxide and residual amounts of the reducing agent in axial flow direction through a second monolithic shaped catalyst active in oxidation of the residual amounts of the reducing agent.
Type:
Application
Filed:
May 12, 2020
Publication date:
November 26, 2020
Applicant:
Haldor Topsøe A/S
Inventors:
Janus Emil Münster-Swendsen, Niklas Bengt Jakobsson
Abstract: A process for the cleaning of a lean gas stream contaminated with volatile organic compounds (VOCs) and/or sulfur-containing compounds comprises the steps of adding ozone to the contaminated lean gas stream, subjecting the ozone-containing lean gas stream to ultraviolet irradiation, thereby transforming VOCs to particles, maintaining the irradiated gas stream in a stay zone for a sufficient time to allow aerosol particle growth, and passing the gas stream through a catalytic bag filter at a temperature down to room temperature to remove the formed particles and eliminate any remaining ozone. The bag filter has been made catalytic by impregnation with one or more metal oxides in which the metals are selected from V, W, Pd and Pt, supported on TiO2.
Type:
Grant
Filed:
September 11, 2017
Date of Patent:
November 17, 2020
Assignee:
Haldor Topsoe A/S
Inventors:
Janus Emil Münster-Swendsen, Niklas Bengt Jakobsson
Abstract: A catalytic reactor comprises a filter unit which extracts and collects particles from the fluid flow stream above the reactor internals, the filter unit comprises elements which are safely, easily and quickly handled without the need for tools.
Abstract: In a novel method for start-up heating of a converting re-actor in an ammonia synthesis plant, the conventional use of a gas fired heater is replaced by inductive heating. The inductive heating is obtained using an alternating high frequency current, which is passed through an inductive coil located inside the reactor, especially mounted inside a pressure shell. The method makes it possible to run reactions at high temperatures and high pressures in a very efficient way.
Abstract: The invention provides a method for the production of a supported nickel catalyst, in which an aqueous mixture comprising an alkali metal salt plus other metal salts is sintered to form a support material. A supported nickel catalyst comprising potassium ?-alumina is also provided.
Type:
Grant
Filed:
September 14, 2017
Date of Patent:
September 22, 2020
Assignee:
Haldor Topsoe A/S
Inventors:
Joachim Harteg Jacobsen, Charlotte Vinding Ovesen, Christian Daugaard
Abstract: A u-tube heat exchanger has inlet tubes arranged in a pressure neutral inlet tube plate, a heating medium flows via the inlet tubes into u-tubes arranged in a tube sheet where the medium splits in two and flows from both ends of the u-tubes into a heating medium outlet chamber and exits the heat exchanger via an outlet nozzle.
Abstract: A process for producing UREA, said process comprising the steps of:—purification of a hydrocarbon feed gas removing Sulphur and/or chloride components if present, —reforming the hydrocarbon feed gas in a reforming step where the steam/carbon ratio is less than 2.6 thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O, —optionally adding H2O to the synthesis gas from the reforming step maintaining an overall steam/carbon less than 2.
Type:
Application
Filed:
March 7, 2018
Publication date:
July 23, 2020
Applicant:
Haldor Topsøe A/S
Inventors:
Christian Henrik Speth, Per Juul Dahl, Annette E. Kroll Jensen, Niels Christian Schjødt, Marcus Symreng
Abstract: Method for the preparation of a monolithic catalyst for the reduction of nitrogen oxides VOC and carbon monoxide in an off-gas, the catalyst comprises at least one platinum group metal, vanadium, titania and optionally tungsten oxide.
Type:
Grant
Filed:
June 19, 2017
Date of Patent:
July 21, 2020
Assignee:
Haldor Topsoe A/S
Inventors:
Kim Hougaard Pedersen, Viggo Lucassen Hansen, Francesco Castellino
Abstract: The invention relates to a catalyst material comprising a support, a first metal and a second metal on said support. The first and second metals are in the form of a chemical compound. The first metal is Fe, Co or Ni, and the second metal is selected from the group consisting of Sn, Zn and In. The invention also relates to a process for the preparation of hydrogen cyanide (HCN) from methane (CH4) and ammonia (NH3), wherein the methane and ammonia are contacted with a catalyst according to the invention.
Type:
Grant
Filed:
November 30, 2018
Date of Patent:
July 14, 2020
Assignee:
Haldor Topsoe A/S
Inventors:
Burcin Temel McKenna, Poul Erik Højlund Nielsen