Abstract: A process for the hydrotreatment of a fuel gas stream containing up to 15% olefins comprises the steps of introducing the fuel gas stream into at least one co-current reactor, where the stream is split into two flow fractions, of which one fraction is routed through an olefin treatment section, while the other fraction is routed through another section, subjecting the sections to heat exchange, combining the two flows, thereby equalizing temperatures and compositions, cooling the combined flow over a heat exchanger and reacting the combined flow to equilibrium in an adiabatic hydrotreatment reactor. A second co-current reactor with intercooling arranged in series after the first cocurrent reactor and before the final adiabatic reactor is used if the fuel gas stream contains more than 8% olefins.
Type:
Grant
Filed:
September 11, 2017
Date of Patent:
March 24, 2020
Assignee:
Haldor Topsoe A/S
Inventors:
Jens Michael Poulsen, Lene Boas, Max Thorhauge
Abstract: Process for the co-production of methanol and ammonia together with urea production from a hydrocarbon feed without venting to the atmosphere carbon dioxide captured from the methanol or ammonia synthesis gas and without using expensive air separation units and water gas shift. Carbon dioxide removal from flue gas from reforming section to convert partially or fully all ammonia into urea. Synergi of having methanol, ammonia and urea production to produce coating material for the urea production.
Abstract: The invention relates to a catalytic reactor suited for exothermal reactions with a radial process fluid flow and process fluid flow guides which ensures an extended fluid flow path and higher flow velocity and thereby enhanced cooling of the catalyst bed in the reactor.
Type:
Grant
Filed:
June 30, 2016
Date of Patent:
March 17, 2020
Assignee:
Haldor Topsoe A/S
Inventors:
Anders Lindhard Christensen, Emil Andreas Tjärnehov
Abstract: A catalytic reactor comprises a floating tray fluid distributor and optionally also an integrated particle separator which is modular build to be assembled inside the reactor and which has support members enabling the floating tray to be floating supported by the catalyst bed inside the reactor.
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:
Application
Filed:
November 3, 2017
Publication date:
February 6, 2020
Applicant:
Haldor Topsøe A/S
Inventors:
Olav Holm-Christensen, Karthik Gopal Manoharan, Klaus Risbjerg Jarlkov, Jacob Brix
Abstract: In a novel process for methanol production from low quality synthesis gas, in which relatively smaller adiabatic reactors can be operated more efficiently, some of the inherent disadvantages of adiabatic reactors for methanol production are avoided. This is done by controlling the outlet temperature in the pre-converter by rapid adjustment of the recycle gas, i.e. by manipulating the gas hourly space velocity in the pre-converter.
Abstract: A plant for the production of sulfur trioxide from a feed stream containing sulfur-containing compounds and dissolved metals and alkali metals by a process, which involves gas quenching, comprises an incineration furnace, a mixing device and/or a dilution air heater, a dust removal device and an SO2 converter. The plant may further comprise a condenser for the purpose of producing sulfuric acid.
Abstract: A method and a system to assemble a plurality of filter bags within one another using a pole and a pulling guide, and a filter bag unit which includes a plurality of assembled filter bags with creases and stitches oriented relative to each other.
Abstract: Process for the co-production of methanol and ammonia from a hydrocarbon feed without venting to the atmosphere carbon dioxide captured from the methanol or ammonia synthesis gas and without using expensive air separation units and water gas shift.
Abstract: The invention relates to a boiling water reactor for an exothermal reaction. The reactor comprises reactant by-pass inserts arranged on top of the upper tube sheet to provide for a catalyst layer on top of the upper tube sheet and also a cooling stream of reactant by-passing the upper layer of catalyst and cooling the upper tube sheet from the temperature rise due to the exothermal reaction taking place in the upper layer of catalyst.
Abstract: A process for producing an ammonia synthesis gas, said process comprising the steps of: —Reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O, —Shifting the synthesis gas in one in or more shift steps in series, —Optionally wash the synthesis gas leaving the shift section with water, —Sending the process condensate originating from cooling and washing the synthesis gas leaving the shift section to a process condensate stripper wherein the dissolved shift byproducts and dissolved gases are stripped out of the process condensate using steam resulting in a steam stream containing more than 99% of the dissolved methanol in process condensate. —Adding all or part of said steam stream from the process condensate stripper to the synthesis gas downstream the reforming step, prior to the last shift step, wherein —The steam/carbon ratio in the reforming step and the shift step is less than 2.6.
Type:
Application
Filed:
March 7, 2018
Publication date:
December 19, 2019
Applicant:
Haldor Topsøe A/S
Inventors:
Christian Henrik Speth, Per Juul Dahl, Annette E. Krøll Jensen, Niels Christian Schjødt, Marcus Symreng
Abstract: The invention concerns a process for producing carbon monoxide (CO) from carbon dioxide (CO2) in a solid oxide electrolysis cell (SOEC) or SOEC stack, wherein CO2 is led to the fuel side of the stack with an applied current and excess oxygen is transported to the oxygen side of the stack, optionally using air or nitrogen to flush the oxygen side, and wherein the product stream from the SOEC, containing CO mixed with CO2, is subjected to a separation process. The process further comprises heating the inlet gas on both the fuel side and the oxygen side by means of separate heating units, so as to supply heat to the SOEC, where the operation temperature of said heating units is at least equal to the operation temperature of the cell stack minus 50° C., preferably at least equal to the operation temperature of the cell stack.
Type:
Grant
Filed:
March 26, 2013
Date of Patent:
December 3, 2019
Assignee:
Haldor Topsoe A/S
Inventors:
Niklas Bengt Jakobsson, Claus Friis Pedersen, John Bøgild Hansen
Abstract: A method in which flue gas or exhaust gas containing harmful carbon monoxide, organic compounds (VOC) and NOx is contacted with a layered catalyst. A first layer of the catalyst comprises an oxidation catalyst. An underlying layer of the catalyst comprises a NH3-SCR catalyst for the simultaneous removal of the carbon monoxide and NOx.
Type:
Grant
Filed:
May 2, 2018
Date of Patent:
December 3, 2019
Assignee:
Haldor Topsoe A/S
Inventors:
Francesco Castellino, Viggo Lucassen Hansen
Abstract: In a method for the hydroprocessing of renewable feeds in a hydroprocessing unit (unit A), comprising the use of sour waste water from the same or another unit (unit B), which is processing feeds containing sulfur and nitrogen, as wash water in unit A, thereby changing the pH of the waste water from unit A to lower the risk of carbonic acid corrosion of corrodible steel parts in unit A, the renewable material in unit A is directed to contact a material that is catalytically active in hydrogenating the renewable material in the presence of hydrogen, and the effluent is combined with the wash water stream which contains hydrogen sulfide and/or ammonia.
Abstract: In a process for safe production of phosgene (COCI2) from carbon monoxide and chlorine according to the reaction scheme CO (g)+Cl2 (g)?>COCI2 (g) in a plant with a capacity of phosgene below 10 t/hr, the CO is produced on site from a feed stock based mainly on CO2. The plant preferably comprises a solid oxide electrolysis cell (SOEC) stack system producing CO for use together with chlorine in the phosgene synthesis. This way of producing phosgene is based on using primary raw materials for which escape concentrations above 1000 ppm or even above 10000 ppm or 10% will not result in any health risk.
Abstract: A process layout for large scale methanol synthesis comprises one or more boiling water reactors and one or more radial flow reactors in series, the boiling water reactor(s) being fed with approximately fresh make-up syngas. The methanol synthesis loop comprises a make-up gas compressor K1, a recycle gas compressor K2, two or more boiling water converters for methanol synthesis (A1, A2, . . . ), a radial flow converter (B) for methanol synthesis, a steam drum (V1), a high pressure separator (V2), a low pressure separator (V3), feed effluent heat exchangers (E1 and E2), a wash column (C), an air cooler (E3) and a water cooler (E4).
Abstract: Improved contact between interconnect and oxygen electrode material in solid oxide cell (SOC) stacks is achieved through a contact point between the oxygen electrode or an oxygen-side contact layer of the SOC and a coated ferritic stainless steel interconnect in the SOC stack, where the coating on the metallic interconnect comprises Cu.
Type:
Application
Filed:
December 1, 2017
Publication date:
November 14, 2019
Applicant:
Haldor Topsøe A/S
Inventors:
Tobias Holt Nørby, Bengt Peter Gustav Blennow, Rainer Küngas, Jeppe Rass-Hansen, Thomas Heiredal-Clausen
Abstract: A process for combined removal of siloxanes and sulfur-containing compounds from biogas streams, such as streams from landfills or anaerobic digesters, comprises heating the biogas stream and optionally mixing it with air, feeding the gas to a first filter unit with high temperature resistance, injecting a dry sorbent into the first filter unit to capture siloxanes present in the gas, recycling part of the exit gas from the first filter unit to the inlet thereof for the sulfur-containing compounds to be captured by the dry sorbent or optionally to a second filter unit inlet for the sulfur-containing compounds to be captured by a sulfur-specific sorbent and recovering clean gas from the first or optionally from the second filter unit.
Type:
Application
Filed:
June 13, 2017
Publication date:
November 14, 2019
Applicant:
Haldor Topsøe A/S
Inventors:
Niklas Bengt Jakobsson, Janus Emil Münster-Swendsen
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:
Application
Filed:
November 22, 2017
Publication date:
November 14, 2019
Applicant:
Haldor Topsøe A/S
Inventors:
Tobias Holt Nørby, Bengt Peter Gustav Blennow, Rainer Küngas, Jeppe Rass-Hansen, Thomas Heiredal-Clausen