Abstract: A valve having a valve housing and a shut-off element, the valve housing having a cavity for receiving the shut-off element, at least one inlet opening for a fluid to flow into the cavity and at least three outlet openings for the fluid to flow out of the cavity, the shut-off element having a guide body and being arranged in a movable manner at least partially in the cavity of the valve housing, the shut-off element having at least one shut-off projection for shutting off at least one of the outlet openings.

Abstract: A thin-film treatment apparatus for treating viscous material includes a process housing oriented at an incline of at most 20° with a heatable and/or coolable housing casing, which surrounds a housing interior forming a material treatment space, an inlet nozzle arranged in an inlet zone of the process housing to introduce the material to be treated into the material treatment space, an outlet nozzle arranged in an outlet zone of the process housing to discharge the treated material from the material treatment space, and a drivable rotor shaft arranged in the material treatment space and extending coaxially for producing a material film on the inner surface of the housing casing and for conveying the material in the direction of an outlet zone. The rotor shaft includes at least one lift element arranged on the rotor shaft body, for producing a lifting force in the direction of the rotating rotor shaft body.

Abstract: A method for producing a cellulose solution with a solvent from a cellulose suspension in the solvent and a volatile non-solvent, including the introduction of the suspension into an inlet of a thin-film treatment apparatus, application and distribution of the suspension in a film-like form on a housing casing, temperature-controlled using a heat exchanger, by sweeper elements rotating about a common axis in a process housing of the treatment apparatus, evaporation of volatile non-solvent so that the cellulose is dissolved, and output of the solution of cellulose from the treatment apparatus through an outlet, wherein at least a part of the sweeper elements cause the cellulose to be advanced in the direction of the outlet so that the discharge at the outlet is between 300 kg/h and 600 kg/h cellulose solution per m2 of the temperature-controlled surface of the housing casing.

Abstract: A valve having a valve housing and a shut-off element, the valve housing having a cavity for receiving the shut-off element, at least one inlet opening for a fluid to flow into the cavity and at least three outlet openings for the fluid to flow out of the cavity, the shut-off element having a guide body and being arranged in a movable manner at least partially in the cavity of the valve housing, the shut-off element having at least one shut-off projection for shutting off at least one of the outlet openings.

Abstract: A valve having a valve housing and a blocking element, wherein the valve housing has a hollow space for receiving the blocking element, an inlet opening for allowing a fluid to flow into the hollow space and an outlet opening for allowing the fluid to flow out of the hollow space, wherein the blocking element has a guide body and is arranged linearly moveably and at least partially in the hollow space of the valve housing between the inlet opening and the outlet opening, wherein the blocking element has at least one opening for allowing the fluid to flow from the inlet opening to the outlet opening via the opening.

Abstract: A thin-film treatment apparatus for treating viscous material includes a process housing oriented at an incline of at most 20° with a heatable and/or coolable housing casing, which surrounds a housing interior forming a material treatment space, an inlet nozzle arranged in an inlet zone of the process housing to introduce the material to be treated into the material treatment space, an outlet nozzle arranged in an outlet zone of the process housing to discharge the treated material from the material treatment space, and a drivable rotor shaft arranged in the material treatment space and extending coaxially for producing a material film on the inner surface of the housing casing and for conveying the material in the direction of an outlet zone. The rotor shaft includes at least one lift element arranged on the rotor shaft body, for producing a lifting force in the direction of the rotating rotor shaft body.

Abstract: A method and a device for cleaning a fluid is provided, the device including a housing having at least one inlet and at least one outlet, and a slide mechanism which is movable in the housing and has at least one passage having at least two filters lying substantially symmetrically opposite each other, wherein starting from the housing inlet the fluid flows symmetrically onto the filters in the passage and downstream of the filters is directed to the outlet of the housing, wherein a part of the fluid that does not flow through the passage forms a hydrodynamic buffer in a gap between the slide mechanism and the housing, wherein the passage opens out into at least two symmetrically opposite sub-channels of the outlet and at least four flushing flows are generated in the gap between at least two inlet mouths and at least two outlet mouths of the passage.

Abstract: A method and a device for cleaning a fluid is provided, the device including a housing having at least one inlet and at least one outlet, and a slide mechanism which is movable in the housing and has at least one passage having at least two filters lying substantially symmetrically opposite each other, wherein starting from the housing inlet the fluid flows symmetrically onto the filters in the passage and downstream of the filters is directed to the outlet of the housing, wherein a part of the fluid that does not flow through the passage forms a hydrodynamic buffer in a gap between the slide mechanism and the housing, wherein the passage opens out into at least two symmetrically opposite sub-channels of the outlet and at least four flushing flows are generated in the gap between at least two inlet mouths and at least two outlet mouths of the passage.

Abstract: A shut-off member is provided having a valve housing with an interior and with at least one inlet and at least one outlet, and a closure element which is mounted in the interior so as to be rotatable about an axis, wherein a free space for through-flow of a fluid between inlet and outlet is present between the closure element and the valve housing, and a pair of sealing surfaces is provided on the at least one inlet between valve housing and closure element, and wherein the sealing surface of the closure element is pivotable by rotation of the closure element and, in the locked position of the shut-off member, blocks the inlet by bearing in a fluid-tight manner on the sealing surface of the valve housing, wherein a gap or free space is provided around the closure element.

Abstract: Modular microreactors are provided composed of microreactor parts including a plate body which has, on one plate side, a groove-shaped depression in which a reactor tube is accommodated, and the reaction tube has connection ends on the outer sides of the plate body. Also disclosed are reaction tubes for turbulent mixing, kits for producing the reactors and the use thereof for commencing chemical reactions.

Abstract: The invention relates to a method and a device for producing Lyocell fibers which are extruded from a cellulose solution of water, cellulose and tertiary amine oxide in a spinning head (25). The cellulose solution is obtained in a number of process steps directly from the cellulose (3, 4) or with the formation of a cellulose suspension. Since the degree of polymerization decreases in the course of processing the cellulose through to its extrusion in the cellulose solution, with the processing of celluloses with a low degree of polymerization there is the risk that the endless molded bodies (2) extruded in the spinning head (25) exhibit defective quality.

Abstract: A device for producing Lyocell fibers which are extruded from a cellulose solution of water, cellulose and tertiary amine oxide in a spinning head (25). The cellulose solution is obtained in a number of process steps directly from the cellulose (3, 4) or with the formation of a cellulose suspension. Since the degree of polymerization decreases in the course of processing the cellulose through to its extrusion in the cellulose solution, with the processing of celluloses with a low degree of polymerization there is the risk that the endless molded bodies (2) extruded in the spinning head (25) exhibit defective quality.

Abstract: Modular microreactors are provided composed of microreactor parts including a plate body which has, on one plate side, a groove-shaped depression in which a reactor tube is accommodated, and the reaction tube has connection ends on the outer sides of the plate body. Also disclosed are reaction tubes for turbulent mixing, kits for producing the reactors and the use thereof for commencing chemical reactions.

Abstract: The invention relates to a method and a device for producing Lyocell fibres which are extruded from a cellulose solution of water, cellulose and tertiary amine oxide in a spinning head (25). The cellulose solution is obtained in a number of process steps directly from the cellulose (3, 4) or with the formation of a cellulose suspension. Since the degree of polymerisation decreases in the course of processing the cellulose through to its extrusion in the cellulose solution, with the processing of celluloses with a low degree of polymerisation there is the risk that the endless moulded bodies (2) extruded in the spinning head (25) exhibit defective quality.

Abstract: The invention relates to a method and a device for producing Lyocell fibres which are extruded from a cellulose solution of water, cellulose and tertiary amine oxide in a spinning head (25). The cellulose solution is obtained in a number of process steps directly from the cellulose (3, 4) or with the formation of a cellulose suspension. Since the degree of polymerisation decreases in the course of processing the cellulose through to its extrusion in the cellulose solution, with the processing of celluloses with a low degree of polymerisation there is the risk that the endless moulded bodies (2) extruded in the spinning head (25) exhibit defective quality.

Abstract: The invention relates to a method and a device (1) for the production of a cellulose solution, from which endless moulded bodies (2) can be extruded. First, a cellulose suspension is produced from cellulose (3, 4) and water (6) in a pulper (5). The cellulose suspension is then expressed by a press device (10). After expressing, a tertiary amine oxide, in particular N-methylmorpholine-N-oxide, is fed as a solvent to the cellulose suspension, thus producing a cellulose solution. The efficiency of the method and the device and their environmental compatibility can be improved in that the press water (11) expressed by the press device (10) is at least in part fed back to the pulper (5). In a further development the proportion of the press water (15) in the water (6) is varied depending on the metal content of the cellulose (3, 4) and/or of the cellulose solution.

Abstract: The invention relates to a method and a device for producing Lyocell fibers, which are extruded from a spinning mass containing water, cellulose and tertiary amine oxide. The spinning mass is obtained from cellulose in a number of process steps, wherein a treatment medium is added to the cellulose, cellulose suspension and/or cellulose solution. In order to be able to implement a stable and environmentally compatible spinning method irrespective of the type of cellulose used, according to the invention, provision is made that the content of at least one type of metal ion destabilising the cellulose suspension and/or cellulose solution is monitored in the cellulose, cellulose suspension and/or cellulose solution and adjusted below a stability limit. With the device according to the invention, the metal ion content is measured via sensors (23, 23?) and the metal ion content is adjusted using a control device (17).

Abstract: The present invention relates to a buffer tank as is substantially used for ensuring a constant supply of the spinning machine with a polymer melt in spinning machines. To this end the buffer tank is provided with a compensation chamber whose volume is variable in response to a pressure prevailing in the polymer melt and to a volume flow variation. The polymer melt flows from a polymer melt entry opening to a polymer melt exit opening through the compensation chamber. It is the object of the present invention to make the flow through the compensation chamber uniform. The residence time of the polymer melt in the compensation chamber shall thereby be prevented from having a wide range, the latter resulting in an irregular quality of the yarns produced by the spinning machine because of the time-dependent, mechanical and chemical properties of the polymer melt.

Abstract: A device is disclosed to draw off or store viscous mass which is discharged from a process for example as a result of exothermal events. The device contains at least one unit which has one inlet for the viscous mass and one outlet and is at least partly filled with a non combustible liquid inert to the viscous mass. The unit can be in the form of a pipe or a receptacle. Preferably several units in the form of a pipe can be connected one with the other respectively with a unit in the form of a receptacle. The solution discharged can then be transported via the pipes to the receptacle.

Abstract: Modular microreactors are provided composed of microreactor parts including a plate body which has, on one plate side, a groove-shaped depression in which a reactor tube is accommodated, and the reaction tube has connection ends on the outer sides of the plate body. Also disclosed are reaction tubes for turbulent mixing, kits for producing the reactors and the use thereof for commencing chemical reactions.