Patents by Inventor Herbert Britz
Herbert Britz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9096973Abstract: A method regulating the formation of a fibrous web, such as a paper, cardboard, or tissue web, in which method the formation of the fibrous web is measured online as a controlled variable and is held at a predefinable setpoint level via automatic formation regulation. In addition to the formation, the charge concentration of the suspension is measured as a controlled variable and is taken into consideration during the formation regulation.Type: GrantFiled: March 20, 2013Date of Patent: August 4, 2015Assignee: Voith Patent GmbHInventors: Armin Bauer, Jürgen Käser, Alexander Wohlmuth, Jens Haag, Christian Naydowski, Martin Staiger, Günther Kriechbaum, Herbert Britz
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Patent number: 8925728Abstract: The invention relates to a method for removing solid matter, in particular impurities, by means of flotation from a fibrous material suspension (S), wherein the fibrous material suspension (S) is mixed with gas (L), and wherein in at least two flotation chambers (1, 2, 2?, 2?, 2??, 2??) flotation foam (3, 4) is formed that collects solid matter and removes it from the flotation chamber. The flotation foam (4) of at least one flotation chamber (1, 2, 2?, 2?, 2??, 2??) is at least partially conducted into at least one other flotation chamber (1), in particular in the flotation foam (3) formed therein. According to the method, the complexity can be reduced, even with high requirements regarding effect and yield.Type: GrantFiled: April 23, 2012Date of Patent: January 6, 2015Assignee: Voith Patent GmbHInventors: Herbert Britz, Delphine Delmas
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Publication number: 20130105366Abstract: The invention relates to a method for removing solid matter, in particular impurities, by means of flotation from a fibrous material suspension (S), wherein the fibrous material suspension (S) is mixed with gas (L), and wherein in at least two flotation chambers (1, 2, 2?, 2?, 2??, 2??) flotation foam (3, 4) is formed that collects solid matter and removes it from the flotation chamber. The flotation foam (4) of at least one flotation chamber (1, 2, 2?, 2?, 2??, 2??) is at least partially conducted into at least one other flotation chamber (1), in particular in the flotation foam (3) formed therein. According to the method, the complexity can be reduced, even with high requirements regarding effect and yield.Type: ApplicationFiled: April 23, 2012Publication date: May 2, 2013Inventors: Herbert Britz, Delphine Delmas
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Publication number: 20060021916Abstract: Method and flotation vessel for removing contaminants from aqueous fibrous suspension. Method includes damming up fibrous suspension at head level above base of flotation vessel, forming a bubble flow of gas bubbles rising counter to field of gravity in dammed up fibrous suspension, and guiding fibrous suspension crosswise to bubble flow, such that as contaminants are deposited on gas bubbles to form thickened flotation foam, fibrous suspension is cleaned. Method also includes discharging cleaned fibrous suspension as accepts, and discharging thickened flotation foam. A flow cross section of flotation vessel lying crosswise to bubble flow is straight on at least 80% of at least one side wall and a length of side wall is at least 1.5 times as great as that of an end wall. This abstract is neither intended to define invention disclosed in this specification nor intended to limit the scope of the invention in any way.Type: ApplicationFiled: July 5, 2005Publication date: February 2, 2006Applicant: Voith Paper Patent GmbHInventors: Harald Hess, Axel Dreyer, Martin Kemper, Herbert Britz, Anton Selbherr, Dietrich Moeller
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Patent number: 6962618Abstract: Device and process for the removal of air from flotation foam formed during the flotation of a paper-fiber-containing suspension. The device includes a driven rotor that includes a shaft and at least one rotor blade positioned on the shaft, and a non-rotating wall arranged to surround the rotor in a region of the rotor blade by a non-rotating wall. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.Type: GrantFiled: March 21, 2003Date of Patent: November 8, 2005Assignee: Voith Paper Patent GmbHInventors: Gerhard Gaus, Harald Hess, Herbert Britz
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Publication number: 20040256295Abstract: Method and flotation vessel for removing contaminants from aqueous fibrous suspension. The method includes damming up fibrous suspension at a head level above a bottom of flotation vessel, and forming a bubble flow via gas bubbles rising counter to gravity in dammed fibrous suspension, such that fibrous suspension is carried counter to ascending direction of bubble flow and contaminants are deposited on gas bubbles. Accepts, discharged in cleaned form, are carried counter to bubble flow, and contaminants and bubbles are discharged in thickened flotation foam. A flow cross-section of flotation vessel transverse to bubble flow is formed straight on at least 80% of at least one side wall, and length of side wall is at least 1.5 times greater than width of end wall. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.Type: ApplicationFiled: June 18, 2004Publication date: December 23, 2004Applicant: Voith Paper Patent GmbHInventors: Herbert Britz, Axel Dreyer, Harald Hess, Martin Kemper, Dietrich Moller, Anton Selbherr
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Publication number: 20030183081Abstract: Device and process for the removal of air from flotation foam formed during the flotation of a paper-fiber-containing suspension. The device includes a driven rotor that includes a shaft and at least one rotor blade positioned on the shaft, and a non-rotating wall arranged to surround the rotor in a region of the rotor blade by a non-rotating wall. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.Type: ApplicationFiled: March 21, 2003Publication date: October 2, 2003Applicant: VOITH PAPER PATENT GMBHInventors: Gerhard Gaus, Harald Hess, Herbert Britz
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Publication number: 20020056531Abstract: In a method for the carrying out of a flotation, bleach and/or dispersion process serving for the manufacture of fiber or paper while using one or more method stages in which process steps defined by pre-settable chemical and physical routines are carried out and process optimizations are made in dependence on measured values and characteristic values formed therefrom, optionally while using state models, at least the measured values of at least one method stage, which relevantly affect the target values of the respective end product of the method, are detected online and/or the characteristic values determined from the measured values of at least one method stage are evaluated online and used directly or indirectly for the control or optimization of at least one process, with characteristic values being formed in dependence on the starting materials or raw materials and/or on the chemicals, auxiliary materials, energies and/or materials and emissions to be disposed of, which are added in at least one methodType: ApplicationFiled: September 5, 2001Publication date: May 16, 2002Inventors: Volker Gehr, Boris Reinholdt, Harald Hess, Falk Albrecht, Herbert Britz, Martin Kemper
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Publication number: 20010010294Abstract: The process is designed for the flotation of interfering materials from an aqueous fibrous pulp suspension and is in particular used in the processing of printed or used paper that is otherwise contaminated. The separation of gas bubbles of the suspension occurs in a flotation layer that has a maximum thickness of approximately 100 mm. The process also achieves good flotation results in fibrous pulp suspensions that have a fiber pulp content significantly larger than 1 % by weight, for example around 2% by weight. A flotation apparatus is provided for performing the flotation process. The apparatus includes a flotation vessel, an inlet, an outlet, and a skimmer device.Type: ApplicationFiled: March 19, 2001Publication date: August 2, 2001Applicant: VOITH SULZER PAPIERTECHNIK PATENT GmbHInventors: Herbert Britz, Axel Gommel, Herbert Holik, Martin Kemper, Almut Kriebel, Wolfgang Mannes, Boris Reinholdt, Klaus Steinbild
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Patent number: 6227374Abstract: The process is designed for the flotation of interfering materials from an aqueous fibrous pulp suspension and is in particular used in the processing of printed or used paper that is otherwise contaminated. The separation of gas bubbles of the suspension occurs in a flotation layer that has a maximum thickness of approximately 100 mm. The process also achieves good flotation results in fibrous pulp suspensions that have a fiber pulp content significantly larger than 1% by weight, for example around 2% by weight. A flotation apparatus is provided for performing the flotation process. The apparatus includes a flotation vessel, an inlet, an outlet, and a skimmer device.Type: GrantFiled: July 15, 1998Date of Patent: May 8, 2001Assignee: Voith Sulzer Papiertechnik Patent GmbHInventors: Herbert Britz, Axel Gommel, Herbert Holik, Martin Kemper, Almut Kriebel, Wolfgang Mannes, Boris Reinholdt, Klaus Steinbild
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Patent number: 6183595Abstract: The process targets the removal of interfering materials from an aqueous fibrous material suspension, especially if this is produced from recycled paper. Thereby interfering materials, such as printing ink particles, small synthetic particles, or sticky contamination, are eliminated by flotation in a particularly advantageous manner. In accordance with the invention, the combination of low-intensity and high-intensity flotation is undertaken, whereby the low-intensity flotation generally works in the gravitational field and the high-intensity flotation in a centrifugal field.Type: GrantFiled: July 2, 1998Date of Patent: February 6, 2001Assignee: Voith Sulzer Papiertechnik Patent GmbHInventors: Herbert Britz, Herbert Holik, Martin Kemper, Thomas Martin, Anton Selbherr, Harald Selder
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Patent number: 5916446Abstract: Process and apparatus for the separation of solid matter via flotation. The flotation process for the separation of solid matter from a suspension takes place via the utilization of centrifugal forces wherein the suspension is brought into rotation in a separating zone so that the floated components are particularly effectively routed to and concentrated at the center of the separating space, whereby, when viewed axially, floated components and the remaining portion of the suspension is guided in the same direction and out of the separating zone, with the avoidance of vortexes in the flow stream achieving particularly favorable separation effects. In addition, several apparatuses, for carrying out the process, are also set forth.Type: GrantFiled: April 30, 1997Date of Patent: June 29, 1999Assignee: Sulzer-Escher Wyss GmbHInventors: Herbert Britz, Alexander Peschl
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Patent number: 5690812Abstract: Process and apparatus for the separation of solid matter via flotation. The flotation process for the separation of solid matter from a suspension takes place via the utilization of centrifugal forces wherein the suspension is brought into rotation in a separating zone so that the floated components are particularly effectively routed to and concentrated at the center of the separating space, whereby, when viewed axially, floated components and the remaining portion of the suspension is guided in the same direction and out of the separating zone, with the avoidance of vortexes in the flow stream achieving particularly favorable separation effects. In addition, several apparatuses, for carrying out the process, are also set forth.Type: GrantFiled: November 2, 1995Date of Patent: November 25, 1997Assignee: Sulzer-Escher Wyss GmbHInventors: Herbert Britz, Alexander Peschl
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Patent number: 5279424Abstract: The flotation apparatus removes ink- and contaminant particles from a fiber stock suspension which is produced during the preparation of waste paper. Admixing of air to the fiber stock suspension is accomplished in stepped diffusors. The fiber stock suspension admixed with air, prior to infeed into a flotation container, is guided through a deflection element effective as an impact mixer and followed by a mixing diffusor having a preferred flow direction. This flotation apparatus is especially suited for eliminating disturbing or spurious substances which are present throughout a relatively wide grain size spectrum. A particularly preferred construction uses one or more closed flotation containers, wherein the air effluxing from the flotation foam can be advantageously re-used for aeration of further infed fiber stock suspension.Type: GrantFiled: May 22, 1992Date of Patent: January 18, 1994Assignee: Sulzer Escher Wyss GmbHInventors: Herbert Britz, Erich Linck, Anton Selbherr
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Patent number: 5236090Abstract: The invention relates to a flotation-deinking-device comprising a flotation vessel and at least one inlet for introducing the suspension into the flotation vessel, the inlet being a staged diffusor (12) in which in a region of the stage transition (26) an air inlet opening (20) is arranged. A turbulence generator (28) without an air supply is arranged upstream of the stage transition (26) as seen in the direction of flow.Type: GrantFiled: August 18, 1992Date of Patent: August 17, 1993Assignee: Sulzer-Escher Wyss GmbHInventors: Herbert Britz, Erich Linck