Patents Assigned to Braunschweigische Maschinenbauanstalt
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Patent number: 11981968Abstract: The invention relates to a continuous method for obtaining a crystalline monosaccharide, comprising: continuous crystallization of the monosaccharide in a main crystallizer (10), wherein crystallization by evaporation and/or crystallization by cooling is carried out continuously on a crystal suspension in the main crystallizer in order to allow crystals of the monosaccharide to grow in the crystal suspension; separation of crystals of the monosaccharide out of the crystal suspension to obtain crystalline monosaccharide; continuous formation of a mass of crystallization magma for the main crystallizer (10) in a cascade, wherein the cascade comprises at least one first stage (13) and a final stage (15) connected in series and each stage comprises at least one pre-crystallizer (13A, 15A), wherein, in the at least one pre-crystallizer (13A) of the first stage (13), a solution is seeded with monosaccharide by means of monosaccharide seed crystals in order to obtain a pre-crystallization magma, and a mass of crystaType: GrantFiled: November 27, 2019Date of Patent: May 14, 2024Assignee: BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AGInventors: Mirko Löhn, Holger Fersterra
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Patent number: 11697854Abstract: A method for controlling the operation of a continuously or periodically operating centrifuge can be employed in the sugar industry for separating crystalline carbohydrates or sugar alcohols from a crystal suspension called a magma or a mother liquor. The magma has a varying content of fine grain that is dependent on the properties of the pretreatment and of the raw material. Variable control values are provided in a control device of the centrifuge. One or plurality of sensors are provided that carry out the measurements in electromagnetic, optical, acoustic, and/or conductive ways. These measurements that are conducted serve for determining the fine grain fraction of the magma. The measurements are supplied as measurement signals to the control device of the centrifuge. The control device automatically analyzes the measurement signals supplied to it and evaluates them with respect to the fine grain content of the magma.Type: GrantFiled: March 13, 2020Date of Patent: July 11, 2023Assignee: BMA Braunschweigische Maschinenbauanstalt AGInventors: Jens Mahrholz, Uwe Schwanke, Dirk Spangenberg
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Patent number: 11320199Abstract: The invention relates to an evaporation dryer (1) for drying particles, having—a process chamber (10) with at least one product inlet (11) for supplying the particles to be dried into the process chamber (10) and a product outlet (12) for discharging dried particles from the process chamber (10), —a heat exchanger (20) arranged within the process chamber (10), —having at least one inlet (21, 211) into the heat exchanger (20) for pressurized steam as process steam and at least one condensate outlet (22, 222) from the heat exchanger (20), wherein—the at least one condensate outlet (22, 222) is connected to an expansion tank (30), wherein at least one pump (40) is connected to the expansion tank (30), and the expanding steam is pumped out of the expansion tank (30) and supplied to the process steam.Type: GrantFiled: May 14, 2018Date of Patent: May 3, 2022Assignee: BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AGInventors: Gerald Caspers, Hartmut Hafemann
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Patent number: 10822666Abstract: A method for obtaining crystals from a mother solution operates such that mother solution is fed into a crystallisation device. Supersaturation of the mother solution is brought about by open and/or closed-loop control of the temperature (?). Seed crystals are added to the mother solution at a seeding point (Sp). The seed crystals are grown as nuclei by continuous closed-loop process control and are finally removed from the method as crystals. They form the product yield. The formation of crystal nuclei in the mother solution is countered by steps in the closed-loop process control. During the closed-loop process control and the crystallisation procedure, the position of the limit (M) of the formation of secondary nuclei is determined using sensors that detect data currently, wherein the position of the limit (M) is established as a value of the concentration (c) and the temperature (?) from these data.Type: GrantFiled: January 25, 2017Date of Patent: November 3, 2020Assignee: BMA Braunschweigische Maschinenbauanstalt AGInventors: Jens Mahrholz, Andreas Lehnberger
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Publication number: 20200299790Abstract: A method for controlling the operation of a continuously or periodically operating centrifuge can be employed in the sugar industry for separating crystalline carbohydrates or sugar alcohols from a crystal suspension called a magma or a mother liquor. The magma has a varying content of fine grain that is dependent on the properties of the pretreatment and of the raw material. Variable control values are provided in a control device of the centrifuge. One or plurality of sensors are provided that carry out the measurements in electromagnetic, optical, acoustic, and/or conductive ways. These measurements that are conducted serve for determining the fine grain fraction of the magma. The measurements are supplied as measurement signals to the control device of the centrifuge. The control device automatically analyzes the measurement signals supplied to it and evaluates them with respect to the fine grain content of the magma.Type: ApplicationFiled: March 13, 2020Publication date: September 24, 2020Applicant: BMA Braunschweigische Maschinenbauanstalt AGInventors: Jens Mahrholz, Uwe Schwanke, Dirk Spangenberg
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Patent number: 10549288Abstract: A device having a centrifuge operating discontinuously in batch-type manner for separating syrup from sugar massecuites including a centrifuge housing having a wall and a base, as well as a cylindrical centrifuge drum in a centrifuge housing having discharge openings. A first receiving container serves for the reception of a green discharge. A second receiving serves for the reception of a white discharge. A control device and valve or shut-off assemblies controllable by the control device are provided at or in the discharge opening or in connecting lines for the purposes of separating the green discharge and the white discharge. At least one sensor is provided in the transport path of the syrup. The sensor includes a measuring device for the measurement of a physical value which is representative of the difference between green discharge and white discharge. The control device controls the valve or shut-off assemblies in dependence on the measured values of the physical value transmitted by the sensor.Type: GrantFiled: March 13, 2013Date of Patent: February 4, 2020Assignee: BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AGInventors: Andreas Lehnberger, Dirk Spangenberg, Igor Djoukwe
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Patent number: 10330385Abstract: The present invention relates to a device for removing fluids and/or solid substances from a mixture of particle-shaped materials with a container which forms a ring-shaped process chamber with a plurality of cells separated from each other by walls, comprising an inlet cell, intermediate cells and an outlet cell, a feeding installation for conveying the mixture to be treated into the inlet cell of the process chamber, a discharge installation for discharging the mixture treated from the outlet cell of the process chamber, a ventilation installation for feeding in a first fluidisation agent, in particular in the form of overheated vapour, from below into the process chamber through an inflow floor for generating a fluidised bed in the process chamber, a heating installation for preparing the first fluidisation agent in the flow direction before the ventilation installation, swirl impellers for conditioning the flow in the container from the process chamber to the heating installation and which in part also leType: GrantFiled: March 9, 2015Date of Patent: June 25, 2019Assignee: BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AGInventors: Gerald Caspers, Hartmut Hafemann, Carsten Bonath, Holger Fersterra
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Patent number: 9764337Abstract: A discontinuous centrifuge consists of a rotatable centrifuge drum incorporating a drive spindle, a casing and a base. A hub of the centrifuge drum comprises a plurality of arms for the indirect or direct connection of the casing of the centrifuge drum to the drive spindle of the centrifuge drum. A scraper serves for scraping a product off the inner wall of the casing of the rotatable centrifuge drum. The scraper comprises an element which is pivotal about an axis, which axis extends in parallel with the axis of rotation of the centrifuge drum. The element comprises a blade which extends over almost the entire height of the centrifuge drum and makes contact with the product after the pivotal movement. The scraper is not moveable vertically. The arms of the hub have upper surfaces which are located below the drum base. The scraper is mounted independently of the swinging suspension of the centrifuge drum.Type: GrantFiled: November 20, 2012Date of Patent: September 19, 2017Assignee: BMA Braunschweigische Maschinenbauanstalt AGInventors: Hans-Heinrich Westendarp, Dirk Spangenberg
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Publication number: 20170045293Abstract: The present invention relates to a device for removing fluids and/or solid substances from a mixture of particle-shaped materials with a container which forms a ring-shaped process chamber with a plurality of cells separated from each other by walls, comprising an inlet cell, intermediate cells and an outlet cell, a feeding installation for conveying the mixture to be treated into the inlet cell of the process chamber, a discharge installation for discharging the mixture treated from the outlet cell of the process chamber, a ventilation installation for feeding in a first fluidisation agent, in particular in the form of overheated vapour, from below into the process chamber through an inflow floor for generating a fluidised bed in the process chamber, a heating installation for preparing the first fluidisation agent in the flow direction before the ventilation installation, swirl impellers for conditioning the flow in the container from the process chamber to the heating installation and which in part also leType: ApplicationFiled: March 9, 2015Publication date: February 16, 2017Applicant: BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AGInventors: Gerald Caspers, Hartmut Hafemann, Carsten Bonath, Holger Fersterra
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Patent number: 9463475Abstract: A discontinuous centrifuge has a rotatable centrifuge drum with a casing. The cylindrical centrifuge casing is provided with holes to discharge a liquid produced during the centrifugation. The holes have a cross-section with an elliptical shape. The cross-section of the holes is widened from the inside to the outside. The hole wall is continuous in this case. The diameter of the cross-sections of the holes parallel to the drum axis on the inside of the casing is equal to the diameter of the cross-sections of the holes parallel to the drum axis on the outside of the casing. The diameter of the cross-sections of the holes in the peripheral direction, on the other hand, on the inside of the casing is smaller than the diameter of the cross-sections of the holes in the peripheral direction on the outside of the casing. The area of the elliptical holes may be additionally also divided by webs.Type: GrantFiled: November 23, 2012Date of Patent: October 11, 2016Assignee: BMA Braunschweigische Maschinenbauanstalt AGInventors: Hans-Heinrich Westendarp, Dirk Spangenberg
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Patent number: 9180467Abstract: A continuously operating centrifuge for centrifuging sugar massecuites has an upwardly flaring conical sieve basket (20) which rotates about a vertical axis (16). A product distributor (40) flares downwardly and extends into the bottom region of the sieve basket (20). The product distributor (40) is substantially coaxial with respect to the sieve basket (20), has a discharge rim and rotates about the same vertical axis (16) as the sieve basket (20). Within and in the upper region of the product distributor (40), there is provided a distributor pot (30) which serves as a feeding device for the sugar massecuites in the axial region of the centrifuge. The peripheral wall of the product distributor (40) is divided up into a plurality of ring elements (41, 42, 43) which overlap in the direction of the axis (16) and the internal diameters of which differ from each other. A bell (50) surrounds the product distributor (40) and flares conically downwardly.Type: GrantFiled: May 14, 2010Date of Patent: November 10, 2015Assignee: BMA Braunschweigische Maschinenbauanstalt AGInventors: Eckhard Bartsch, Hans-Heinrich Westendarp
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Patent number: 9174224Abstract: A continuously operating centrifuge serves for centrifuging sugar massecuites. It has elements (20, 30, 40, 50) which rotate about a common axis (16). Furthermore, there is provided a drive unit (70), an outer housing incorporating a framework (10) having a base (11) and side walls (12) and vibration damping elements (82). An inner housing (80) is provided around the elements (20, 30, 40, 50) rotating about the common axis (16). The vibration damping elements (82) are arranged between the inner housing (80) and the base (11) of the framework (10) of the outer housing.Type: GrantFiled: May 14, 2010Date of Patent: November 3, 2015Assignee: BMA Braunschweigische Maschinenbauanstalt AGInventors: Eckhard Bartsch, Hans-Heinrich Westendarp
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Publication number: 20150290662Abstract: A device having a centrifuge operating discontinuously in batch-type manner for separating syrup from sugar massecuites including a centrifuge housing having a wall and a base, as well as a cylindrical centrifuge drum in a centrifuge housing having discharge openings. A first receiving container serves for the reception of a green discharge. A second receiving serves for the reception of a white discharge. A control device and valve or shut-off assemblies controllable by the control device are provided at or in the discharge opening or in connecting lines for the purposes of separating the green discharge and the white discharge. At least one sensor is provided in the transport path of the syrup. The sensor includes a measuring device for the measurement of a physical value which is representative of the difference between green discharge and white discharge. The control device controls the valve or shut-off assemblies in dependence on the measured values of the physical value transmitted by the sensor.Type: ApplicationFiled: March 13, 2013Publication date: October 15, 2015Applicant: BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AGInventors: Andreas Lehnberger, Dirk Spangenberg, Igor Djoukwe
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Patent number: 8844162Abstract: A device for removing fluids from particulate materials, including a container having a circular process chamber with a cylindrical external contour, an input device for inputting the materials into the process chamber, a discharge device for discharging the particulate materials freed of the fluid from the process chamber, a feed device for feeding a fluidizing agent from below into the process chamber, and at least one conditioning device for conditioning the fluidization agent in the direction of flow prior to the feed device.Type: GrantFiled: July 14, 2009Date of Patent: September 30, 2014Assignee: BMA Braunschweigische Maschinenbauanstalt AGInventors: Lothar Krell, Gerald Caspers
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Publication number: 20140256528Abstract: A discontinuous centrifuge consists of a rotatable centrifuge drum incorporating a drive spindle, a casing and a base. A hub of the centrifuge drum comprises a plurality of arms for the indirect or direct connection of the casing of the centrifuge drum to the drive spindle of the centrifuge drum. A scraper serves for scraping a product off the inner wall of the casing of the rotatable centrifuge drum. The scraper comprises an element which is pivotal about an axis, which axis extends in parallel with the axis of rotation of the centrifuge drum. The element comprises a blade which extends over almost the entire height of the centrifuge drum and makes contact with the product after the pivotal movement. The scraper is not moveable vertically. The arms of the hub have upper surfaces which are located below the drum base. The scraper is mounted independently of the swinging suspension of the centrifuge drum.Type: ApplicationFiled: November 20, 2012Publication date: September 11, 2014Applicant: BMA Braunschweigische Maschinenbauanstalt AGInventors: Hans-Heinrich Westendarp, Dirk Spangenberg
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Publication number: 20120142513Abstract: A continuously operating centrifuge for centrifuging sugar massecuites has an upwardly flaring conical sieve basket (20) which rotates about a vertical axis (16). A product distributor (40) flares downwardly and extends into the bottom region of the sieve basket (20). The product distributor (40) is substantially coaxial with respect to the sieve basket (20), has a discharge rim and rotates about the same vertical axis (16) as the sieve basket (20). Within and in the upper region of the product distributor (40), there is provided a distributor pot (30) which serves as a feeding device for the sugar massecuites in the axial region of the centrifuge. The peripheral wall of the product distributor (40) is divided up into a plurality of ring elements (41, 42, 43) which overlap in the direction of the axis (16) and the internal diameters of which differ from each other. A bell (50) surrounds the product distributor (40) and flares conically downwardly.Type: ApplicationFiled: May 14, 2010Publication date: June 7, 2012Applicant: BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AGInventors: Eckhard Bartsch, Hans-Heinrich Westendarp
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Publication number: 20120122650Abstract: A continuously operating centrifuge serves for centrifuging sugar massecuites. it has elements (20, 30, 40, 50) which rotate about a common axis (16). Furthermore, there is provided a drive unit (70), an outer housing incorporating a framework (10) having a base (11) and side walls (12) and vibration damping elements (82). An inner housing (80) is provided around the elements (20, 30, 40, 50) rotating about the common axis (16). The vibration damping elements (82) are arranged between the inner housing (80) and the base (11) of the framework (10) of the outer housing.Type: ApplicationFiled: May 14, 2010Publication date: May 17, 2012Applicant: BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AGInventors: Eckhard Bartsch, Hans-Heinrich Westendarp
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Publication number: 20110162229Abstract: A device for removing fluids from particulate materials, including a container having a circular process chamber with a cylindrical external contour, an input device for inputting the materials into the process chamber, a discharge device for discharging the particulate materials freed of the fluid from the process chamber, a feed device for feeding a fluidizing agent from below into the process chamber, and at least one conditioning device for conditioning the fluidization agent in the direction of flow prior to the feed device.Type: ApplicationFiled: July 14, 2009Publication date: July 7, 2011Applicant: Braunschweigische Maschinenbauanstalt AGInventors: Lothar Krell, Gerald Caspers
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Patent number: 7578073Abstract: This invention relates to an appliance (1) for the removal of fluids and/or solids from a mixture of particulate materials with a container (2) that constitutes a ring-shaped processing space (20) with a cylindrical outer contour with devices for the charging and discharging of the particulate material into and out of the processing space (20) and with a fan device (5) for supplying a fluidization agent from underneath into the processing space (20) as well as devices (6) for the processing of the fluidization agent in the flow direction in front of the fan device, whereby in the processing space (20), cells (15, 16, 17) are formed extending in the vertical direction where one cell constitutes a discharge cell (17) through which there is no fluidization agent flow from underneath where at the lower end of the discharge cell the discharge device is arranged and where another cell (15) is provided with a charge device and where the cells (15, 16, 17) are open at their upper ends in order to facilitate transportType: GrantFiled: May 14, 2007Date of Patent: August 25, 2009Assignee: Braunschweigische Maschinenbauanstalt AGInventors: Lothar Krell, Gerald Caspers
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Patent number: 7335302Abstract: A centrifuge basket having a basket casing, on the inside of which is formed a working screen for separating off suspension liquid. The basket casing has openings of elliptical design. The openings are offset in relation to one another in the axial direction and in the circumferential direction of the basket casing. The contours of the openings overlap in the axial direction such that the basket circumference is covered by openings.Type: GrantFiled: February 10, 2006Date of Patent: February 26, 2008Assignee: Braunschweigische Maschinenbauanstalt AGInventors: Eckhard Bartsch, Hans-Heinrich Westendarp