Abstract: The reductive removal of nitrogen oxides from the exhaust gas from internal combustion engines operated predominantly under lean conditions takes place in a selective catalytic reduction (SCR) of the nitrogen oxides by means of ammonia or a compound which can be decomposed into ammonia as reducing agent. Conventional SCR catalysts typically have a relatively narrow working temperature window, usually 350° C. to 520° C., in which good nitrogen oxide conversions can be achieved with sufficient selectivity. SCR catalyst formulations whose working window is in the temperature range from 150° C. to 350° C. generally not be used at higher temperatures since they oxidize the ammonia required as reducing 18 agent to nitrogen oxides at above 350° C. To cover the entire exhaust gas temperature range typical of vehicles having been operating internal combustion engines extending from 200° C. to 600° C.

Abstract: A process for purifying removal of a chemical target compound from a suspension of crystals thereof in mother liquor in a wash column with forced transport of the crystal bed from the top downward, in which crystals are removed from the lower end of the crystal bed with a rotating removal device and melted, and a portion of the crystal melt is conducted back toward the crystal bed as wash melt, the removal device being secured with a drive shaft conducted into the wash column from the bottom through an inlet having a seal, said drive shaft being driven about its longitudinal axis by a drive unit for rotation and being mounted so as to be rotatable about its longitudinal axis in more than one bearing, such that the mounting in one of the bearings absorbs the downward force acting on the drive shaft, the mounting in two or more bearings absorbs forces acting radially outward from the drive shaft, and the mounting in one bearing is additionally capable of absorbing an upward force acting on the drive shaft.

Abstract: In order to produce a packaging for a sink which has particularly good absorption properties and a low rate of transportation damage there is proposed a packaging for a sink which comprises at least one supporting body that is formed at least partly from a foamed plastic material and comprises at least one seating element incorporating a seating channel for an edge section of the sink, and an outer packaging whose interior accommodates the sink and the at least one supporting body, wherein the at least one supporting body extends over substantially the entire internal height of the interior of the outer packaging.

Abstract: In exhaust gas purification units for decreasing nitrogen oxides in lean-burn exhaust gas of internal combustion engines by selective catalytic reduction by means of ammonia, introduction of excess ammonia leads to undesirable emissions of unused ammonia. These emissions can be decreased by means of ammonia barrier catalysts. In the ideal case, ammonia is oxidized to nitrogen and water by these catalysts. These require additional space in the exhaust gas purification unit which may have to be taken away from the space provided for the SCR main catalyst. In addition, the use of such ammonia barrier catalysts can result in overoxidation of the ammonia to nitrogen oxides. To overcome these disadvantages, a catalyst containing two superposed layers is proposed for the removal of nitrogen-containing pollutant gases from diesel exhaust gas. The lower layer contains an oxidation catalyst and the upper layer can store at least 20 milliliters of ammonia per gram of catalyst material.

Abstract: A catalytically active diesel particulate filter with ammonia trap action is presented, which, in addition to an oxidation-active coating (2), comprises a coating (1) which is catalytically active in the SCR reaction. By means of this inventive diesel particulate filter, it is possible to make exhaust gas aftertreatment systems for removing nitrogen oxides and particulates from the exhaust gas of lean engines considerably simpler and less expensive.

Abstract: An apparatus to clean a continuously running conveyor belt for a machine to produce or refine paper, cardboard or other layers of fibrous material including a cleaning device and at least one supplementary device. The cleaning device is configured to dispense at least one cleansing stream to the conveyor belt in at least one cleaning stage. The supplementary device is configured to dispense a chemically active medium and/or a physically active medium in a preparation process. The preparation process is configured to support and/or enhance the cleaning effectiveness and conditioning of a surface of the conveyor belt for a cleaning process.

Abstract: The invention relates to a transponder unit (10), in particular for transponder cards, identification documents or suchlike, having at least one chip (15) and at least one antenna (11), wherein the antenna is formed from a metal conductor which is arranged on an antenna substrate (14) and is permanently connected to the latter, and wherein said conductor is provided with a structure device which is integrally connected to the conductor and is intended to form a composite conductor (12) such that the composite conductor has a higher tensile stress or a higher elongation break than the conductor.

Abstract: In order to provide a sink, comprising at least one basin, which is provided with a basin flange at its upper edge, a cover, which is fixed to the basin and at least partially covers the basin flange, and at least one holding element on the sink side, which cooperates with a holding element on the worktop side when the sink is fitted, in order to hold the sink on a worktop, in the production of which no after-treatment of visible faces of the sink is necessary and in which the cover can be freely designed and, in particular, can be configured without a dent, it is proposed that the holding element on the sink side is connected to the basin flange.

Abstract: In order to produce a packaging for a sink which has particularly good absorption properties and a low rate of transportation damage there is proposed a packaging for a sink which comprises at least one supporting body that is formed at least partly from a foamed plastic material and comprises at least one seating element incorporating a seating channel for an edge section of the sink, and an outer packaging whose interior accommodates the sink and the at least one supporting body, wherein the at least one supporting body extends over substantially the entire internal height of the interior of the outer packaging.

Abstract: A process for heterogeneously catalyzed partial dehydrogenation of a hydrocarbon, in which a reaction gas mixture input stream comprising the hydrocarbon to be dehydrogenated is conducted through a fixed catalyst bed disposed in a shaft and the reaction gas mixture input stream is obtained in the shaft by metering an input gas II comprising molecular oxygen upstream of the fixed catalyst bed into an input gas stream I which comprises molecular hydrogen and the hydrocarbon to be dehydrogenated and is flowing within the shaft toward the fixed catalyst bed.

Abstract: Structured automotive catalysts which comprise a plurality of different catalytically active coatings arranged above one another on a support body and whose coatings contain transition metals and porous support materials are well known. Structured automotive catalysts of this type which do not belong to the group of three-way catalysts, in particular, frequently display large selectivity losses after thermal aging processes which can be attributed to the thermally induced migration of transition metal atoms from one layer into the neighbouring coating.

Abstract: A tray column is proposed which includes column trays, two or more supports which are arranged on the underside of the column trays and support them and a bearing ring for the column trays on the inner wall of the tray column, wherein three-way joints of inner column wall, bearing ring and support are prevented by cutouts in the bearing ring.

Abstract: A driving mechanism for operating a shaping die to join stacked plates by a deep-drawing and swaging operation is implemented as an electric drive, such as a linear motor or a rotary motor, which is operatively connected to the shaping die.

Abstract: A stand allows a user to quickly and easily set the angular orientation of a telephone or other piece of equipment relative to a support surface (e.g. a desktop). The stand is fastened to, and removed from, the equipment without the use of tools by a magnetic attraction. The stand allows a user to tilt the equipment at one of two user-selected angles, to improve access to keys of the equipment and/or to reduce glare on the equipment's display. The display may also be tiltable. The stand provides for at least two course angle adjustments of the tilt of the equipment by the selected orientation of the stand and/or the selected attachment position of the stand relative to the equipment.

Abstract: A drive system includes a rotary drive unit for rotating a shaft and a linear drive unit for moving the shaft in a linear direction. To improve efficiency and shelf life, an energy storage is mechanically connected to the shaft for biasing the shaft to seek a linear movement in opposition to the linear direction. The energy storage absorbs the kinetic energy of the shaft and releases it again subsequently.