Haldor Topsoe A/s

Haldor Topse A/s

Topsoe A/s

Niklas Bengt Jakobsson

Claus Friis Pedersen

Rasmus Trane-Restrup

Janus Emil Münster-Swendsen

Jacob Hjerrild Zeuthen

Kresten Egeblad

Pat A Han

Anders Helbo Hansen

Peter Bo Olsen

John Bøgild Hansen

Joakim Reimer Thøgersen

Francesco Castellino

Thomas Heiredal-Clausen

Niels Christian Schjødt

Kurt Agerbæk Christensen

Bengt Peter Gustav Blennow

Jesper Norsk

Per Aggerholm Sørensen

Lived J Lemus-Yegres

Troels Dahlgaard Stummann

Esben Lauge Sørensen

Berit Hinnemann

Anders Theilgaard Madsen

Tommy Bian Xiang

Souheil Saadi

Lone Bech

Friis Claus Pedersen

Artem Tarasenko

Casper Hadsbjerg

Hans Qiongxiao Wu

Bengt Peter Blennow

Joakim Reimer THØGERSEN

John BØGILD Hansen

Berit Hiinnemann

Niels Christian Schjodt

The content of oxygen in molten metallic copper is reduced during the copper refining process by adding pure carbon monoxide, produced by electrolysis of carbon dioxide in a solid oxide electrolysis cell (SOEC), thereby removing oxygen through the reduction of CuO to Cu. This way, the purity of the metallic copper is increased.

Process for reducing the content of oxygen in metallic copper

A method for cleaning an off-gas from viscose production, essentially containing HS and CS, comprises passing the gas through a catalytic reactor containing a direct oxidation type catalyst, such as VOon silica, to convert HS in the gas to elemental sulfur, SOor mixtures thereof, either via the oxygen present in the gas or via oxygen added to the gas stream. Elemental sulfur and SOare removed from the effluent gas from the catalytic reactor, and the unconverted CSis recycled to the viscose production process.

Method for cleaning viscose production off-gases and catalysts for use in the method

A process for the removal of nitrous oxide (NO) 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.

Process for the removal of dinitrogen oxide in process off-gas

The invention relates to a gas treatment monolith article, said gas treatment article comprising: a full body porous material comprising a porous substrate and an aluminium oxide coating homogeneously distributed throughout said porous substrate, wherein said porous substrate is a fibrous material; and at least one acid gas absorption active component or a precursor thereof impregnated into said porous aluminium oxide coated substrate. The invention further relates to uses of the gas treatment monolith article of the invention.

Gas treatment monolith article

The present application relates to a process for treating the off gas from a carbon black process, said process comprising the steps of: providing an off gas from a carbon black process, reacting said off gas in a first reaction step forming water and S, and condensing the S at a temperature Tcon where S is in a liquid phase and the water is in gas form thereby achieving a gaseous stream comprising water and a liquid stream comprising S, and wherein the first reaction step is carried out over a monolith catalyst.

Process for treating the off gas from a carbon black plant to recover sulphur

Oxygen is removed from a gas feed such as a landfill gas, a digester gas or an industrial COoff-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 H, CO, ammonia, urea, methanol, ethanol and dimethyl ether (DME).

Method for the removal of oxygen from an industrial gas feed

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 TiO.

Process for low temperature gas cleaning with ozone and a catalytic bag filter for use in the process

The present invention relates to a method and a system for catalytic oxidation of a lean HS stream. More specifically, the invention concerns a novel way of removing sulfur dioxide (SO) formed by catalytic oxidation of hydrogen sulfide (HS) with the purpose of removing HS from a gas. This catalytic oxidation of HS yields sulfur dioxide (SO) through the use of known catalysts, so-called SMC catalysts.

Method and system for catalytic oxidation of a lean HS stream

A combustible gas from carbon black production is utilized in a gas engine by adding an oxygen-containing gas to the combustible gas, passing said mixed gas over a selective catalyst, which is active for oxidizing HS to SObut substantially inactive for oxidation of CO, Hand other hydrocarbons with less than 4 C-atoms, passing the converted gas through an SOremoval step, and passing the cleaned gas to a gas engine or to an energy recovery boiler. This way, the tail gas from carbon black production, which is normally combusted in a CO boiler or incinerated, can be utilized to good effect.

Process for energy recovery in carbon black production

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.

Process for the combined removal of siloxanes and sulfur-containing compounds from biogas streams

Oxygen is removed from a gas feed such as a landfill gas, a digester gas or an industrial COoff-gas by removing sulfur-containing compounds and siloxanes from the feed gas, heating the feed gas, injecting one or more reactants for oxygen conversion into the heated feed gas, carrying out a selective catalytic oxygen conversion in at least onesuitable reactor and cleaning the resulting oxygen-depleted gas. The reactants to be injected comprise one or more of H, CO, ammonia, urea, methanol, ethanol and dimethylether (DME).

Method for the removal of oxygen from an industrial gas

A method for the purification of a raw gas stream by selective catalytic oxidation, in which organic and inorganic sulfur compounds, halogenated and non-halogenated volatile organic compounds are selectively oxidized without substantially oxidizing the lower hydrocarbons and the sulfur containing compounds present in the gas to sulfur trioxide and excess of oxygen is removed by oxidation of lower alcohols, ethers or hydrogen added to the raw gas stream upstream the catalytic oxidation.

Process for the purifying of a raw gas stream containing mainly C1-C5 hydrocarbons and carbon dioxide, and impurities of organic and inorganic sulfur compounds, halogenated and non-halogenated volatile organic compounds and oxygen

The invention concerns a process for producing carbon monoxide (CO) from carbon dioxide (CO) in a solid oxide electrolysis cell (SOEC) or SOEC stack, wherein COis 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 CO, 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&#xb0; C., preferably at least equal to the operation temperature of the cell stack.

Process for producing CO from COin a solid oxide electrolysis cell

In a process for safe production of phosgene (COCI) from carbon monoxide and chlorine according to the reaction scheme CO (g)+Cl(g)&#x2212;&#x3e;COCI(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 CO. 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.

Process for safe production of phosgene

A method for removing hydrogen sulfide (HS) from an acid gas comprises feeding the gas to a membrane separation unit, collecting the product gas from the membrane unit, heating the permeate stream to the necessary inlet temperature for catalytic oxidation of HS and feeding the heated permeate stream to a catalytic oxidation unit, where HS is oxidized to SO. The heating of the permeate stream is accomplished by using a fraction of the feed gas to heat the permeate stream in a separate heater or by using a steam-fired heater. The method is especially suited for use on an off-shore facility.

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Kågeröd, Sweden

Niklas Bengt Jakobsson