Haldor Topsoe A/s

Umicore Ag & Co Kg

Haldor Topse A/s

Ecospray Technologies S.r.l.

Halder Topsoe A/s

Keld Johansen

Ton V W Janssens

Viggo Lucassen Hansen

Maurizio Archetti

Poul E Nielsen

Jesper Norsk

Ioannis Gekas

Bent Sarup

Søren Dahl

Haldor F Topsoe

Gurli Mogensen

Niels Poul Dalskov

Petru Gordes

Erik Pedersen

Søren Pehrson

Soren Pehrson

Ton VW Janssens

Soren Dahl

System for the removal of noxious compounds and particulate matter from exhaust gas of a compression ignition engine comprising a three way catalyst unit having an NH-SCR activity, an ammonia oxidation activity and an adsorption activity of volatile vanadium and tungsten compounds volatilized off an upstream SCR active catalyst.

System for the removal of particulate matter and noxious compounds from engine exhaust gas

A method for the preparation of a catalyzed monolithic body or a catalyzed particular filter. The method includes the step of suctioning a sol-solution containing catalytically active material and metal oxide catalyst carriers or precursors thereof into pores of a monolithic substrate, solely by capillary forces and without the application of vacuum or pressure.

Method for the preparation of a catalysed monolith

Method for removal of soot, ash and metals or metal compounds, together with removal of NOx and SOx being present in process off-gasses or engine exhaust gasses.

Method for cleaning process off- or engine exhaust gas

Method and system for removal of soot, ash and heavy metals, and optionally additionally NOand SObeing present in exhaust gas from an engine operated on heavy fuel oil with sulphur content 0.1%-4.0 wt % and a heavy metal element content of 5 mg/kg to 1000 mg/kg.

Method and system for the removal of particulate matter soot, ash and heavy metals from engine exhaust gas

The invention pertains to a catalyzed particulate filter provided in its entire dispersion side and within its partition walls with a first catalyst being active in selective catalytic reduction of nitrogen oxides, and in its entire permeate side with a second catalyst combination with a catalyst being active in oxidation of ammonia mixed with a catalyst being active in oxidation of carbon monoxide and hydrocarbons and a method for its preparation. The mean particle size of the first catalyst is smaller than the mean pore diameter of the longitudinal porous walls, and the mean particle size of the second catalyst combination is larger than the mean pore diameter of the longitudinal walls. In the example, the first catalyst is a silica aluminum phosphate SAPO-34 promoted with 2% copper and the second catalyst is a mixture of platinum and palladium (molar ratio 3:1) supported on alumina particles and beta zeolite powder with 1.0% copper.

Method for the preparation of a catalysed particulate filter and catalysed particulate filter

Method for the preparation of a catalysed particulate filter and a particulate filter prepared by the method.

Method for the preparation of a catalysed particulate filter and a particulate filter. The method comprises the steps of a) providing a catalyst wash coat with a first catalyst active in burning off of soot and a second catalyst active in selective catalytic reduction of nitrogen oxides; b) coating a particulate filter body with the catalyst wash coat on the dispersion side and the permeate side of the filter body and within partition walls of the filter body; and c) drying and heat treating the coated filter body to obtain the catalysed particulate filter.

The invention provides a method for purification of exhaust gas from a diesel engine in a system, which comprises a device for selective catalytic reduction and a diesel particulate filter preferably at least partially covered by a catalytic layer installed downstream of the device for selective catalytic reduction. A device for catalytic oxidation is installed upstream of the device for selective catalytic reduction and/or between the device for selective catalytic reduction and the diesel particulate filter. A device for injection of a controlled amount of reductant is installed inlet of the device for selective catalytic reduction, and a device for injection of a controlled amount of hydrocarbon is installed inlet of the catalytic oxidation.

Method for purification of exhaust gas from a diesel engine

A method and apparatus for the removal of NOemission from a lean burn compression ignition engine, wherein NOcontaining engine exhaust gas is brought in contact with a catalyst being active in the reduction of NOto NO and comprising at least one platinum group metal with the proviso that the platinum metal is not platinum and at least one redox active metal oxide and thereby reducing NOcontained in the exhaust gas to NO by reaction with CO, hydrocarbons and/or soot being present in the exhaust gas.

Method and apparatus for the purification of exhaust gas from a compression ignition engine

The invention provides a process for purification of an exhaust gas comprising nitrogen oxides, carbon monoxide, hydrocarbons and particulate matters from an internal combustion engine comprising the step of contacting the exhaust gas with one or more catalysts on one or more cross corrugated wire mesh sheets () being arranged between two or more gas impermeable cross corrugated sheets (). The exhaust gas is contacted with one or more catalysts being coated in different zones on the one or more cross corrugated wire mesh sheets (). Particulate matters in the exhaust gas are retained in a zone of the gas impermeable sheets (), where the zone is porous and optionally coated with an oxidation catalyst. The exhaust gas from the combustion engine can be heated by the purified exhaust gas. The invention further comprises an apparatus for the purification process of an exhaust gas from an internal combustion engine.

Process and apparatus for purification of an exhaust gas from an internal combustion engine

The invention provides a method and system for purification of a carbon monoxide, nitrogen oxides, incompletely combusted hydrocarbons and soot containing exhaust gas from a combustion engine comprising the steps of catalytically oxidizing the carbon monoxide in the exhaust gas, retaining soot and remaining amounts of hydrocarbons in the oxidised exhaust gas in a filter, addition of a reducing agent to gas and catalytically reducing nitrogen oxides, and obtaining a purified exhaust gas. The invention further comprises the steps of controlling a temperature in the oxidising catalyst by passing at least a part of the gas from the engine through a first side of a heat exchanger, and passing at least a part of the purified exhaust gas through a second side of the heat exchanger, and leading the remaining amount of the gas from the engine through a by-pass across the first side of the heat exchanger and leading the remaining amount of the purified exhaust gas through a by-pass across the second side of the heat exchanger.

Method and system for purification of exhaust gas from diesel engines

The invention provides a process and system for purification of an exhaust gas stream from a combustion engine containing hydrocarbons, soot, carbon monoxide and sulphur dioxide. The process comprises the steps of oxidising the hydrocarbons and part of the soot in a first reactor in the presence of a first catalyst active in oxidising hydrocarbons and soot without oxidising sulphur dioxide and forming a partly purified exhaust gas stream, of cooling of the partly purified exhaust gas stream, of converting the carbon monoxide of the partly purified exhaust gas stream in a second reactor in presence of a second catalyst active in oxidising carbon monoxide without oxidising sulphur dioxide and of withdrawing a purified exhaust gas stream.

Process for purification of sulphur-containing exhaust gas

A process for the production mixed metal oxide containing catalysts comprising the steps of:

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Frederikssund, Denmark

Keld Johansen