With Beating, Refining, And/or Disintegrating Means Patents (Class 162/261)
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Patent number: 8313616Abstract: A used paper recycling apparatus capable to be installed in small office or general household, friendly to environment and low in running cost, and assuring high confidentiality. A used paper recycling apparatus comprising a pulp making section for crushing and beating used paper and making into pulp, a paper making section for recycling paper by making used paper pulp from the pulp making section, and a control section for driving and controlling by interlocking the pulp making section and paper making section, which are incorporated in a furniture size apparatus case, in which the pulp making section includes a crushing unit for stirring and grinding the used paper, and a beating unit for beating the crushed used paper from the crushing unit, and the crushing unit and beating unit are circulating the used paper pulp.Type: GrantFiled: September 22, 2006Date of Patent: November 20, 2012Assignee: Seed Company LimitedInventors: Shigeru Tamai, Yuji Koyama
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Publication number: 20120273149Abstract: A method and apparatus for pretreating fibre material to be used in manufacturing paper or the like, for example, by precipitating mineral substances to the fibres. During precipitation, fibre material, which is advantageously pretreated in a through-flow mixer operating on the principle of an impact mill, is fed to the precipitation reactor. Gas is led to the precipitation reactor in order to generate a gas space in the reactor. The gas contains a substance, which precipitates the mineral substance such as carbon dioxide (CO2). The fibre material is fed to the gas space of to the precipitation reactor as small liquid and solid substance fractions such as drops and/or particles.Type: ApplicationFiled: June 29, 2012Publication date: November 1, 2012Inventors: Mikko MAIJALA, Bjôrn Lax, Roope Maijala, Matti Sipilä, Päjyi Solismaa
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Patent number: 8262849Abstract: A fiber mass suspension is produced by mixing together a fiber material (FM) and water (W) in a pulper (1). The formed fiber mass suspension is divided into an accept fraction and a reject fraction. The reject fraction is supplied continuously to a first secondary pulper (2) for further screening and defibring. The accept fraction formed in the first secondary pulper (2) is supplied continuously for further processing and the reject fraction formed in the first secondary pulper (2) is supplied continuously to a second secondary pulper (3) for further processing. The accept fraction formed in the second secondary pulper (3) is supplied continuously for further processing.Type: GrantFiled: September 11, 2008Date of Patent: September 11, 2012Assignee: Metso Paper, Inc.Inventor: Timo Vuorinen
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Patent number: 8262861Abstract: A refiner plate for forming accepts and exhaust from a pulp material includes a first side and a second side and defines a channel extending between the first side and the second side. The channel is operable to direct at least some of the exhaust and at least some of the accepts away from the first side.Type: GrantFiled: March 3, 2008Date of Patent: September 11, 2012Assignee: J & L Fiber Services, Inc.Inventor: Ola M. Johansson
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Patent number: 8216423Abstract: The invention combines the step of adding chemicals such as alkaline peroxide to an intermediate line after refining, with the step of applying chemicals such as alkaline peroxide as a pre-treatment before primary refining and/or applying chemicals such as alkaline peroxide at the primary refiner. This is implemented in the preferred embodiment, by pre-treating feed material, refining the materials into a pulp in a superatmospheric refiner, and adding chemicals in the post refining blowline.Type: GrantFiled: March 26, 2010Date of Patent: July 10, 2012Assignee: Andritz Inc.Inventor: Eric Chao Xu
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Patent number: 8197643Abstract: A refining segment intended for refiners of disc-type for working fibrous material. A first portion has a first pattern of coarse bars and a second portion has a second pattern of fine bars. The second portion is positioned outside the first portion. The second pattern has a higher density of bars than the first pattern. The refining segment has a deflector arrangement protruding from a bar surface of the coarse bar. The bar surface faces the rotational direction. The deflector arrangement has a deflector surface directing a flow of fibrous material away from the bar surface. A refining apparatus has two opposing rotatable refining discs, separated by a refiner gap. At least one of the two refining discs has the above described patterns and deflector arrangements.Type: GrantFiled: April 28, 2009Date of Patent: June 12, 2012Assignee: Metso Paper IncInventor: Christer Hedlund
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Publication number: 20120138250Abstract: A pulp making technology for realizing a used paper recycling apparatus of furniture size that can be installed in a small shop, room or the like. Having a beating machine provided with a pair of beating disks disposed oppositely to each other in a relatively rotatable manner at a close distance, this beating machine has a tiny beating gap, between the pair of beating disks, for executing the beating process of at least two continuous stages from a rough beating process to a finish beating process, and the beating gap starts at a supply port formed in a central part of the fixed side beating disk, and ends at a discharge port formed on the outer peripheral edge of the beating disks. Therefore, even in a very small beating process space contained in an apparatus space of furniture size, smooth and highly efficient beating of high processing capacity is realized without causing clogging of used paper.Type: ApplicationFiled: August 23, 2011Publication date: June 7, 2012Inventors: Shigeru Tamai, Yuji Koyama
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Publication number: 20120125549Abstract: A method to treat a lignocellulosic material including: performing a steam explosion reaction on the lignocellulosic material and discharging a slurry from the; adding an alkali material to the slurry in a first conveyor; transferring the slurry with the alkali material from the first conveyor to a second conveyor; adding an enzyme solution to the slurry while in, entering or at the discharge of the second conveyor; transferring the slurry with the enzyme solution from the second conveyor slurry to a mixer; mixing the slurry in the mixer, wherein a second portion of the enzyme solution is added to the slurry during the mixing, and transferring the slurry with the enzyme solution from the mixer to a first reactor vessel wherein the slurry in the first reactor vessel undergoing enzymatic hydrolysis such that the viscosity of the slurry is reduced in the first reactor vessel.Type: ApplicationFiled: November 21, 2011Publication date: May 24, 2012Applicant: ANDRITZ INC.Inventors: Rodolfo ROMERO, Bertil STROMBERG
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Patent number: 8172985Abstract: The present invention relates to extraction bedplates 10, 110, 210, 310, 410, 510, 610 for use in apparatus 5 for defiberizing paper making stock and methods for making such bedplates. Preferred methods for making such bedplates 10, 110, 210, 310, 410, 510, 610 include the step of cutting a disc shaped blank from a metal plate and the step of forming holes 45, 145, 245, 345, 445, 545, 645, 646 either the metal plate or the disc shaped blank. The holes 45, 145, 245, 345, 445, 545, 645, 646 preferably are formed using a cutting stream, most preferably either a laser or a water jet. Use of a such a cutting stream to form the holes facilitates the cutting of holes 45, 145, 245, 345, 445, 545, 645, 646 having non-circular, and preferably tesselatory, cross sections as well as holes 45, 145, 245, 345, 445, 545, 645, 646 extending at acute angles with respect to an axis 20 of the bedplate.Type: GrantFiled: October 14, 2009Date of Patent: May 8, 2012Assignee: Kadant Black Clawson Inc.Inventors: David E. Chupka, Christopher L. Demler
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Patent number: 8168041Abstract: The device is for the dilution of dewatered cellulose pulp that maintains a consistency of 20-30% or greater. By shredding of the pulp to a finely divided dry-granulate, dilution to a homogeneous consistency in the medium consistency range can take place exclusively through hydrodynamic effects from the addition of dilution fluid. The dilution fluid is added to granulate at a position at which granulate is in free fall in a standpipe and above a level Liqlev of diluted pulp in the standpipe. A number of nozzles are arranged around the periphery of the stand pipe, directed in towards the center of the stand pipe, obliquely downwards in the direction of fall of the granulate. It is possible through this simplified procedure to avoid completely the conventional dilution screws, and this reduces the investment costs and operating costs, while at the same time unnecessary mechanical influence of the pulp fibers can be avoided.Type: GrantFiled: January 7, 2011Date of Patent: May 1, 2012Assignee: Ovivo Luxembourg S.a.r.l.Inventors: Vidar Snekkenes, Lennart Gustavsson, Jonas Saetherasen, Goran Olsson
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Publication number: 20120067536Abstract: Pulper used in the paper industry that processes pulp which pulper comprises a pulper container (19), a punched plate screen (15) installed to the mentioned container, a binnacle (8) out of the lower part (3) of the container for the mass that has penetrated the punched plate screen (15) and a rotating mixing rotor located in the container (19) and equipped with wings (1); (5) the purpose of which mixing rotor is to defibrate paper and mix the mass in the container (19) and that the mixing rotor further comprises a cylinder part (20) directed downwards towards the punched plate screen (15) and that rotates along the mentioned rotor to which cylinder part wings (2) that clean the punched plate screen (15) are attached and which cylinder part (20) is located between the mixing rotor and the punched plate screen (15).Type: ApplicationFiled: May 19, 2010Publication date: March 22, 2012Inventor: Jouko Hautala
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Publication number: 20120048491Abstract: Methods and apparatus are provided for exploiting coated paper products such as coated paper cups. End products include biofuels that have a high energy density. The biofuels may be mixed with coal or other fuels and have good binding characteristics. In some embodiments, useful chemicals such as HMF are produced. The methods involve heat treatment at relatively mild temperatures and pressures under acidic conditions.Type: ApplicationFiled: April 30, 2010Publication date: March 1, 2012Applicant: EVE RESEARCH INC.Inventor: Alexis Fosse Mackintosh
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Patent number: 8088254Abstract: Pulp processing equipment used to produce high-quality recycled pulp with little damage to fibers, high brightness and low residual ink by means of a force selectively acting on fiber surfaces during the process of recycling waste paper is disclosed. Moreover, fiber surfaces are modified by means of a force acting on only the fiber surfaces to obtain high-quality pulp and to render harmless dirts deteriorating pulp quality. A jet system is provided having one or more nozzles for jetting an aqueous slurry containing a material comprising cellulose into a vessel.Type: GrantFiled: February 19, 2010Date of Patent: January 3, 2012Assignee: Nippon Paper Industries Co., Ltd.Inventors: Shisei Goto, Keigo Watanabe, Hiromichi Tsuji, Takanori Miyanishi
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Publication number: 20110277947Abstract: Cellulose nanofilaments from cellulose fibers, a method and a device to produce them are disclosed. The nanofilaments are fine filaments with widths in the sub-micron range and lengths up to a couple of millimeters. These nanofilaments are made from natural fibers from wood and other plants. The surface of the nanofilaments can be modified to carry anionic, cationic, polar, hydrophobic or other functional groups. Addition of these nanofilaments to papermaking furnishes substantially improves the wet-web strength and dry sheet strength much better than existing natural and synthetic polymers. The cellulose nanofilaments produced by the present invention are excellent additives for reinforcement of paper and paperboard products and composite materials, and can be used to produce superabsorbent materials.Type: ApplicationFiled: May 11, 2011Publication date: November 17, 2011Applicant: FPINNOVATIONSInventors: Xujun HUA, Makhlouf LALEG, Thomas OWSTON
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Publication number: 20110253327Abstract: The invention relates to a method for refining cellulose fibers in aqueous suspension, using a plurality of refiner fillings having refining edges, of which one is operated on at least one stator and another is operated on at least one rotor, and the suspension to be refined is processed between the two refiner fillings. A partial flow of the suspension delivered to the outlet side flows back on the back side of the refiner filling on the stator side, and then flows through openings located between the refining edges of the refiner filling on the stator side, and again into the refining zone. This leads to particularly uniform and economical refining.Type: ApplicationFiled: January 18, 2011Publication date: October 20, 2011Inventors: Oliver Crasser, Markus Fursattel, Harald Hess, Hans-Herrmann Kleinschnittger, Michael Kramer
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Patent number: 8038841Abstract: Coarsely shredded paper powder is pulverized using a first vertical roller mill equipped with a plurality of first pulverizing rollers 15 to obtain a fine paper powder having an average particle diameter of 50 ?m or greater and less than 150 ?m. Then, such a fine paper powder is further pulverized using a second vertical roller mill equipped with a plurality of second pulverizing rollers 25 to obtain a fine paper powder having an average particle diameter of 25 ?m or greater and less than 50 ?m. Concerning the inclination angle ?1 of grooves 15a, 25a with respect to axes L of rotation of said first and second pulverizing rollers, an angle of inclination ?1 of the first pulverizing rollers 15 is smaller than an angle of inclination ?2 of the second pulverizing rollers 25. Accordingly, the fine paper powder can be produced without incurring a substantial environmental impact.Type: GrantFiled: November 2, 2009Date of Patent: October 18, 2011Assignee: Kankyokeieisogokenkyusho Co., Inc.Inventor: Takamichi Matsushita
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Patent number: 8025770Abstract: A used paper processing apparatus to be place in small shop or general household, capable of holding high secrecy, friendly to the environment, and low in running cost. In a furniture size apparatus case, a pulp manufacturing section for manufacturing used paper pulp by macerating and beating the used paper, a paper making section for manufacturing recycled paper by making the used paper pulp manufactured in the pulp manufacturing section, and a control section for driving and controlling by interlocking the pulp manufacturing section and paper making section are provided, being place in a room producing used paper, and by macerating and processing the used paper by the pulp manufacturing section, leak or disclosure of confidential information or private information written or printed on used paper can be prevented effectively, and further used paper pulp is processed by the paper making section, and recycled paper is manufactured.Type: GrantFiled: July 13, 2006Date of Patent: September 27, 2011Assignee: Seed Company LimitedInventors: Shigeru Tamai, Yuji Koyama
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Publication number: 20110162814Abstract: A refiner steam separation system according to the present invention includes a blowline for transporting a mixture of fiber material from a refiner to an inlet of a steam separator. Waste steam is discharged from the separator through a waste steam outlet. Cleaned fiber material is discharged from the separator through an exit, which prevents a substantial portion of the waste steam from passing through the exit. A relay pipe communicates with the exit and a dryer duct, and transports cleaned fiber material therebetween. A resin input communicates with the relay pipe, and supplies resin therein. The resin is mixed with the cleaned fiber material prior to the cleaned fiber material being dried in the dryer duct. The present invention is also directed to a method of reducing VOC emissions generated during refining cellulosic fibrous material.Type: ApplicationFiled: March 15, 2011Publication date: July 7, 2011Inventor: Dennis Henry VADERS
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Publication number: 20110108220Abstract: A pulp concentration adjusting technology for realizing a used paper recycling apparatus of furniture size that can be installed in a small shop or general household. The used paper recycling apparatus having a pulp making unit and a paper making unit includes a beating concentration adjusting unit for adjusting the beating concentration of the used paper pulp in the pulp making unit, and a paper making concentration adjusting unit for adjusting the paper making concentration of the used paper pulp in the paper making unit, in which the beating concentration adjusted in the beating concentration adjusting unit is set at a high concentration capable of beating in the pulp making unit, and the paper making concentration adjusted in the paper making concentration adjusting unit is set at a low concentration capable of making paper in the paper making unit.Type: ApplicationFiled: January 29, 2010Publication date: May 12, 2011Inventors: Shigeru Tamai, Yuji Koyama
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Publication number: 20110105650Abstract: A method of preparing lignocellulosic fibre aggregates from a densified mass of lignocellulosic fibre, such as densified bales, for use in manufacturing high performance, recyclable and moldable lignocellulosic fibre and thermoplastic composites, or articles made of the high performance, recyclable and moldable lignocellulosic fibre and thermoplastic composites is provided. The method includes: (a) feeding densified forms of lignocellulosic fibre into a size reduction device; and size reducing the lignocellulosic fibres so as to produce dense lignocellulosic fibre aggregates having an average size profile suitable for use in manufacturing high performance, recyclable and moldable lignocellulosic fibre and thermoplastic composites, or articles made of the high performance, recyclable and moldable lignocellulosic fibre and thermoplastic composites. The density of the lignocellulosic fibre is generally maintained throughout the method.Type: ApplicationFiled: January 16, 2009Publication date: May 5, 2011Inventor: Vincent Yan
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Publication number: 20110042027Abstract: A refining segment intended for refiners of disc-type for working fibrous material. A first portion has a first pattern of coarse bars and a second portion has a second pattern of fine bars. The second portion is positioned outside the first portion. The second pattern has a higher density of bars than the first pattern. The refining segment has a deflector arrangement protruding from a bar surface of the coarse bar. The bar surface faces the rotational direction. The deflector arrangement has a deflector surface directing a flow of fibrous material away from the bar surface. A refining apparatus has two opposing rotatable refining discs, separated by a refiner gap. At least one of the two refining discs has the above described patterns and deflector arrangements.Type: ApplicationFiled: April 28, 2009Publication date: February 24, 2011Inventor: Christer Hedlund
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Patent number: 7892400Abstract: A chip pretreatment process which comprises conveying the feed material through a compression screw device having an atmosphere of saturated steam at a pressure above about 5 psig, decompressing and discharging the compressed material from the screw device into a decompression region, feeding the decompressed material from the decompression region into a fiberizing device, such as a low intensity disc refiner, where at least about 30 percent of the fiber bundles and fibers are axially separated, without substantial fibrillation of the fibers. In a more specific form the invention is directed to a process for producing mechanical pulp, including the steps of fiberizing wood chip feed material in a low intensity disc refiner until at least about 30 percent of the fibers are axially separated with less than about 5 percent fibrillation, and subsequently refining the fiberized material in a high intensity disc refiner until at least about 90 percent of the fibers are fibrillated.Type: GrantFiled: November 19, 2007Date of Patent: February 22, 2011Assignee: Andritz Inc.Inventor: Marc J. Sabourin
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Publication number: 20100276100Abstract: In a narrow used paper processing space of a used paper recycling apparatus of furniture size, this is a dewatering device for executing smoothly and efficiently a dewatering process as a principal component of a paper making process for manufacturing used paper pulp. Being disposed in a linkage location between a mesh belt and a smooth surface belt, and configured to roll and squeeze the mesh belt and the smooth surface belt from the upper and lower sides in a compressed state, the apparatus includes a preliminary dewatering roll unit for squeezing and dewatering preliminarily the wet paper on the mesh belt, and a final dewatering roll unit for squeezing and dewatering the wet paper on the mesh belt preliminarily dewatered in the preliminary dewatering roll unit to obtain dry paper of specified water content.Type: ApplicationFiled: April 13, 2010Publication date: November 4, 2010Inventors: Shigeru Tamai, Yuji Koyama
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Publication number: 20100269991Abstract: A deflaker plate for use in a deflaker for reducing fibrous flakes in a slurry of fibers. The deflaker plate may include at least one annular ring consisting of multiple teeth, in which at least one tooth has a leading face, a trailing face, and an impact-generating side-face. The impact-generating side-face may be adapted to generate an impact force during operation, such that the force corresponds to a first vector radially pushing the slurry towards a center of the deflaker and a second vector tangentially pushing the slurry towards the leading face.Type: ApplicationFiled: March 31, 2010Publication date: October 28, 2010Applicant: ANDRITZ INC.Inventor: Peter Antensteiner
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Publication number: 20100206500Abstract: A fiber mass suspension is produced by mixing together a fiber material (FM) and water (W) in a pulper (1). The formed fiber mass suspension is divided into an accept fraction and a reject fraction. The reject fraction is supplied continuously to a first secondary pulper (2) for further screening and defibring. The accept fraction formed in the first secondary pulper (2) is supplied continuously for further processing and the reject fraction formed in the first secondary pulper (2) is supplied continuously to a second secondary pulper (3) for further processing. The accept fraction formed in the second secondary pulper (3) is supplied continuously for further processing.Type: ApplicationFiled: September 11, 2008Publication date: August 19, 2010Applicant: METSO PAPER, INC.Inventor: Timo Vuorinen
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Publication number: 20100200181Abstract: The invention presents a pulp manufacturing technology for realizing a used paper recycling apparatus of furniture size that can be installed not only in a large office, but also in a small shop or general household. In the beating process of the pulp making process for fragmenting and beating the used paper for manufacturing used paper pulp, a grinder having a pair of beating disks rotated relatively, beating action surfaces of the beating disks are disposed oppositely across a tiny beating gap, thereby a used paper pulp circulation route is formed, in which the used paper pulp beaten by the grinder is processed in the beating process while being circulated in the used paper pulp circulation route, and the beating gap of the beating action surfaces is adjusted to be narrower gradually from the beginning till the end of the beating process. As a result, in a limited narrow working space, a smooth and efficient beating operation is realized from the beginning till the end of the beating process.Type: ApplicationFiled: January 21, 2010Publication date: August 12, 2010Inventors: Shigeru Tamai, Yuji Koyama
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Patent number: 7758726Abstract: Plate elements, a plate configuration, and associated system for thermomechanical refining of wood chips wherein destructured and partially defibrated chips are fed to a rotating disc primary refiner, where opposed discs each have an inner band pattern of bars and grooves and outer band pattern of bars and grooves, such that substantially complete fiberization (defibration) of the chips is achieved in the inner band and the resulting fibers are fibrillated in the outer band. One embodiment is directed to a pair of opposed co-operating refining plate elements for a flat disc refiner wherein the bars and grooves on each of the inner bands form an inner feed region followed by an outer working region, the bars and groove on each of the outer bands form an inner feed region followed by an outer working region, and the gap and/or material flow area formed when the plates are placed in front of each other increases between the inner working region and the outer feed region.Type: GrantFiled: February 6, 2007Date of Patent: July 20, 2010Assignee: Andritz Inc.Inventors: Marc J. Sabourin, Luc Gingras
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Publication number: 20100147474Abstract: A method of producing non-woven elements made from a raw material comprising grass plants. A first intermediate product is made of per-prepared, damp natural fibers having a dry substance concentration of between 30%-50%, more preferably approximately 40%. The invention also relates to the production of a second intermediate product from the first intermediate product according to the following steps. The natural fibers are predried, thermoactive binding fibers are added thereto, additives are sprayed thereon and the order of the step can vary and/or individual steps may be carried out simultaneously with one another. Preferably, the raw material is silated grass and, in order to produce the first intermediate product, the raw material is defibered and the digestible components of the raw material are separated therefrom.Type: ApplicationFiled: March 25, 2008Publication date: June 17, 2010Inventor: Stefan Grass
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Publication number: 20100051221Abstract: A method and apparatus for manufacturing a product of integrated cellulose and fibrous materials. The method includes blending cellulose particles and polymeric fibres into a cellulose and polymeric fibre blend. The blend is heated to a temperature at which the polymeric fibres begin to melt and to bond with the cellulose particles, so as to form a product of integrated cellulose and fibrous materials. An apparatus for the method includes a first conveying means, a second conveying means, a blending means and a heating means. The apparatus further include a primary shredder and a secondary shredder for shredding the cellulose material, typically recycled newsprint, prior to mixing with the polymeric fibrous material. A shredder is also described.Type: ApplicationFiled: January 24, 2008Publication date: March 4, 2010Applicant: ENVIROBATT PTY. LTD.Inventor: Alan Lyle Griffiths
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Publication number: 20100032110Abstract: A method is provided for subjecting a material which is partially in a solid state and partially in a liquid state to explosive forces. The method includes containing the material in a vessel having a length in a first direction and a width in a second direction perpendicular to the first direction, the length being greater than the width; subjecting the material to the explosive forces in the vessel, the explosive forces being caused by introducing energy to the material by discharging a capacitor through a capacitor discharge electrode located within the material; and removing the material from the vessel after being subjected to the explosive forces.Type: ApplicationFiled: March 9, 2009Publication date: February 11, 2010Applicant: Dynawave CorporationInventors: Vernon E. Staton, Vann E. Staton, Lorenza Glenn Austin
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Publication number: 20090308549Abstract: A device for mechanical defibration of wood comprises a defibration surface for processing of wood raw material and loosening of fibers, said defibration surface comprising grinding grits fastened on a metal base surface. The grits (1) fastened on the metal base surface (2) are positioned within a determined distance from each other on the base surface, so that they form a regular defibration surface.Type: ApplicationFiled: April 28, 2006Publication date: December 17, 2009Inventor: Olli Tuovinen
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Patent number: 7628890Abstract: The present invention relates to extraction bedplates (10), (110), (210), (310), (410), (510), (610) for use in apparatus (5) for defiberizing paper making stock and methods for making such bedplates. Preferred methods for making such bedplates (10), (110), (210), (310), (410), (510), (610) include the step of cutting a disc shaped blank from a metal plate and the step of forming holes (45), (145), (245), (345), (445), (545), (645), (646) either the metal plate or the disc shaped blank. The holes (45), (145), (245), (345), (445), (545), (645), (646) preferably are formed using a cutting stream, most preferably either a laser or a water jet. Use of a cutting stream to form the holes facilitates the cutting of holes (45), (145), (245), (345), (445), (545), (645), (646) having non-circular, and preferably tesselatory, cross sections as well as holes (45), (145), (245), (345), (445), (545), (645), (646) extending at acute angles with respect to an axis (20) of the bedplate.Type: GrantFiled: July 18, 2002Date of Patent: December 8, 2009Assignee: Kadant Black Clawson Inc.Inventors: David E. Chupka, Christopher L. Demler
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Publication number: 20090288789Abstract: A thermomechanical pulping method including: refining pulp with a high consistency refining stage, and a medium consistency refining stage processing the refined pulp discharge from the high consistency refining stage. Chemical pretreatments for improving pulp quality development during medium consistency refining can be optionally added at the pressurized chip press, fiberizer pre-refining step, primary high consistency refining step, and/or the standpipe feeding the medium consistency refiner.Type: ApplicationFiled: February 19, 2009Publication date: November 26, 2009Applicant: ANDRITZ INC.Inventors: Marc Sabourin, Johann Aichinger
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Publication number: 20090151880Abstract: A mechanical pulping method including: defibrating a comminuted cellulosic material; mechanically refining the defibrated cellulosic material in a primary refining step; introducing to the cellulosic material at least one of a chemical agent and a biological during the defibration step or the mechanical refining step, and producing pulp from the refined and defibrated cellulosic material.Type: ApplicationFiled: October 24, 2008Publication date: June 18, 2009Applicant: ANDRITZ INC.Inventors: Johann Aichinger, Marc Sabourin, Jan Hill, Johann Grossalber
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Publication number: 20090145563Abstract: The present invention relates generally to the timber products industry, and particularly to methods and apparatus for the separation of bast fibers. More particularly, the present invention relates to methods and apparatus for use in the separation of inner core from outer bast of bast plants using soaking, cutting, and scrimming methods and apparatuses.Type: ApplicationFiled: December 9, 2008Publication date: June 11, 2009Applicant: TimTek, LLCInventor: Walter Jarck
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Publication number: 20090137015Abstract: The present invention relates to a method for preparing organic material for microbiological fermentations of municipal waste water sludge for reducing the waste water sludge and/or of cellulosic material for the production of biofuels, with at least one of the following steps: disintegrating and/or liquefying the organic and/or cellulosic material by using a jet pump and/or creating a supersonic shock zone in a jet pump the organic and/or cellulosic material is supplied to in order to disintegrate and/or liquefy the organic and/or cellulosic material and/or applying high pressure steam to an annular ring chamber enclosing a tube of a jet pump and directing the steam into the tube of the jet pump thereby sucking organic and/or cellulosic material into the tube and creating a supersonic shock zone in the jet pump in order to disintegrate and/or liquefy the organic and/or cellulosic material.Type: ApplicationFiled: November 17, 2008Publication date: May 28, 2009Applicant: APV SYSTEMS LIMITEDInventor: Paul John Skudder
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Publication number: 20090057454Abstract: A disc housing intended for refiners with refining discs rotating in opposed directions relative to each other is disclosed for mechanically disintegrating and working fibrous material. The disc housing surrounds the refining discs in an air-tight manner, and is provided with an outlet for the worked fibrous material. The inside of the disc housing alond its periphery is formed with a channel, which, as seen in the circumferential direction, has a continously increasing radius, which increases all the way to the outlet, which is located tangentially as a direct continuation of the channel.Type: ApplicationFiled: April 6, 2006Publication date: March 5, 2009Applicant: Metso Panelboard ABInventors: Orjan Ahlgren, Anders Mattsson
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Publication number: 20090032630Abstract: Methods and apparatus controlling the alignment between refining surfaces of opposite refining discs are disclosed which are relatively rotatable and which are incorporated in a refiner for disintegrating and refining lignocellulose-containing material in a refining gap between the refining surfaces. The disclosed method includes positioning at least three sensors at least three measurement positions, measuring the vibrations at each of the measurement positions during refiner operation, and comparing each of the measured vibrations at each of the measurement positions with each other.Type: ApplicationFiled: December 5, 2006Publication date: February 5, 2009Applicant: METSO PAPER, INC.Inventors: Peter Svedberg, Hans-Olof Backlund, Thomas Sahlin
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Publication number: 20090028373Abstract: The production equipment of paper-made components for loudspeakers includes a mixing device, a fining device, a paper-making device, and a shape processing device. The mixing device mixes material of a paper-made component for a loudspeaker into liquid to generate mixed liquid. The fining device includes a pressure unit, an orifice, and an inner wall. The pressure unit applies pressure on the mixed liquid to cause the mixed liquid to pass through the orifice, and the mixed liquid collides against the inner wall to cause the fining device to generate fined material. The paper-making device paper-makes the fined material to generate a paper-made component. The shape processing device processes the shape of the paper-made component. This structure provides production equipment of the paper-made components for loudspeakers, which prepares material for paper-making in a short time and reduces producing time.Type: ApplicationFiled: February 23, 2007Publication date: January 29, 2009Applicant: MAtsushita Electric Industrial Co., Ltd.Inventors: Kazuyoshi Mimura, Kenichi Ajiki, Shinya Mizone, Masahide Sumiyama, Toru Fujii
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Publication number: 20080302491Abstract: The invention relates to a method for preparing paper pulp from recycled paper containing contaminants characterized in that it comprises a first step of agitating the paper in the presence of water in order to obtain a mixture of fibres and contaminants in suspension, a second step of coarsely screening said mixture in order to separate the coarse contaminants from the rest of the suspension, a third step of fine screening in order to separate the fine contaminants from the coarsely-screened suspension and a fourth step of washing said coarse and fine contaminants in order to separate the reusable fibrous materials from the rest of the non-reusable contaminants. In particular, the invention aims to provide a method for preparing paper pulp that is capable of producing a good quality paper pulp from highly-contaminated recycled paper, especially having a contaminant level in the dry state that is greater than or equal to 15% by weight.Type: ApplicationFiled: December 20, 2006Publication date: December 11, 2008Applicant: GEORGIA-PACIFIC FRANCEInventors: Philippe Colin, Philippe Beringuet, Xavier Gillot, Jean-Yves Tinel
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Publication number: 20080277082Abstract: A steam explosion pulping method including: impregnating a cellulosic biomass feed material in a pressurized reactor vessel; discharging the impregnated feed material from the vessel to a high pressure compressor; elevating a pressure of the feed material in the compressor; discharging the pressurized feed material from the compressor to a conduit coupled to a blow valve; rapidly reducing pressure of the pressurized feed material as the feed material passes through the blow valve, and pulping the feed material by expansion of fluid in the feed material during the rapid pressure reduction.Type: ApplicationFiled: March 28, 2008Publication date: November 13, 2008Applicant: ANDRITZ INC.Inventors: Thomas Pschorn, Marc Sabourin, Peter Mraz
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Publication number: 20080149291Abstract: A refiner plate for forming accepts and exhaust from a pulp material includes a first side and a second side and defines a channel extending between the first side and the second side. The channel is operable to direct at least some of the exhaust and at least some of the accepts away from the first side.Type: ApplicationFiled: March 3, 2008Publication date: June 26, 2008Inventor: Ola M. Johansson
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Patent number: 7381294Abstract: A method for producing a microfibrillated cellulose, which comprises subjecting a slurry containing a pulp having a solids concentration of 1 to 6 wt % to the treatment with a disc refiner repeatedly ten times or more, to thereby prepare a microfibrillated cellulose having a number average fiber length or 0.2 mm or less and an amount of water hold of 10 mL/g or more, the amount representing the volume of water capable of being held by a unit weight of the cellulose fiber. The method allows the production of a microfibrillated cellulose having high quality with stability and with good efficiency.Type: GrantFiled: July 15, 2003Date of Patent: June 3, 2008Assignee: Japan Absorbent Technology InstituteInventors: Migaku Suzuki, Yutaka Hattori
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Publication number: 20080121357Abstract: A method for fiberizing material and for feeding fiberized material to a further process. Fiberization is performed with a pulper, which includes a primary space for processing the material to be fiberized with a knife assembly rotating on a driving shaft. The material to be processed is forced, in order to fiberize the material, by rotary motion of the knife through a screen assembly, into a secondary space, for supplying the fiberized material further through an expulsion opening of the pulper to further processing. The knife assembly includes a primary knife unit for final preparation of a material to be fed into the pulper, and a secondary knife unit for fiberizing the material to be processed by forcing it to pass first through the secondary knife unit, and through a screen assembly, spaced from the knife assembly by a clearance. An apparatus can apply the method.Type: ApplicationFiled: August 25, 2004Publication date: May 29, 2008Inventor: Jouko Kiviaho
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Patent number: 7368037Abstract: A refiner steam separation system according to the present invention includes a blowline for transporting a mixture of fiber material from a refiner to an inlet of a steam separator. Waste steam is discharged from the separator through a waste steam outlet. Cleaned fiber material is discharged from the separator through an exit, which prevents a substantial portion of the waste steam from passing through the exit. A relay pipe communicates with the exit and a dryer duct, and transports cleaned fiber material therebetween. A resin input communicates with the relay pipe, and supplies resin therein. The resin is mixed with the cleaned fiber material prior to the cleaned fiber material being dried in the dryer duct. The present invention is also directed to a method of reducing VOC emissions generated during refining cellulosic fibrous material.Type: GrantFiled: May 14, 2004Date of Patent: May 6, 2008Assignee: Masonite CorporationInventor: Dennis Henry Vaders
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Patent number: 7300550Abstract: Plate elements, a plate configuration, and associated system for thermomechanical refining of wood chips wherein destructured and partially defibrated chips are fed to a rotating disc primary refiner, where opposed discs each have an inner band pattern of bars and grooves and outer band pattern of bars and grooves, such that substantially complete fiberization (defibration) of the chips is achieved in the inner band and the resulting fibers are fibrillated in the outer band. A pair of opposed co-operating refining plate elements for a flat disc refiner wherein the bars and grooves on each of the inner bands form an inner feed region followed by an outer working region, the bars and groove on each of the outer bands form an inner feed region followed by an outer working region, and the gap and/or material flow area formed when the plates are placed in front of each other increases between the inner working region and the outer feed region.Type: GrantFiled: December 10, 2004Date of Patent: November 27, 2007Assignee: Andritz Inc.Inventors: Marc J. Sabourin, Luc Gingras
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Publication number: 20070267163Abstract: A used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality.Type: ApplicationFiled: May 10, 2007Publication date: November 22, 2007Applicant: SEED COMPANY LIMITEDInventors: Shigeru Tamai, Yuji Koyama
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Patent number: 7291244Abstract: Methods for conveying, mixing, leveling, and flaking dewatered pulp to produce pulp flakes suitable to be used in a dryer. Methods for producing a consistent flow rate of pulp, and, for producing uniform pulp flakes in terms of pulp flake size and pulp flake moisture content. A method includes introducing a dewatered pulp to a rotating shaftless screw conveyor. The pulp is deposited from the screw conveyor onto a moving belt conveyor through a chute. The pulp is leveled with a rotary doctor located above the belt conveyor to produce a substantially even rate of mass flow of pulp along a length of belt conveyor. Uniform and consistent quantities of pulp per unit time can then be fed from the belt conveyor to a pulp flaker that then translates into an even rate of pulp mass flow to the dryer.Type: GrantFiled: September 29, 2003Date of Patent: November 6, 2007Assignee: Weyerhaeuser CompanyInventors: Ramon C. DeZutter, Christopher Q. Tveter
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Patent number: 7279073Abstract: An apparatus for treating fibrous material is disclosed. The apparatus may include a fiber separator, a de-liquefier, a dry-to-wet blender and a flash dryer. The fiber separator may be a liquid-based fiber separator. The de-liquefier is for removing liquid from the fibrous material. The blender downstream, which may be a dry-to-wet blender, is for adding a dry material to the de-liquefied fibrous material. The de-liquefier and a dry-to-wet blender are downstream from the fiber separator and the dry-to-wet blender may be downstream from the de-liquefier. The flash dryer, which is even further downstream, is for drying the treated fibrous material.Type: GrantFiled: August 13, 2002Date of Patent: October 9, 2007Assignee: U.S. Greenfiber, LLCInventors: David James Bowman, Thomas Reginald Eason, Jr., John Walter Renz
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Patent number: 7169263Abstract: The invention relates to a coarse dirt collector (7) for removing coarse material from a pulper (1). The coarse dirt collector (7) comprises a support arm (8) with a collecting basket (9). The collecting basket (9) consists of a frame (11) on which tines (Z) are fixed by means of a grid. The coarse dirt collector can be pivoted into and out of the pulper, to which end it moves about an axis of rotation (A) positioned at an angle to the plane that is perpendicular to the longitudinal axis (P) of the pulper. Said angle is between 20° and 40°. The advantage of said device is that the coarse dirt collector (7) has to carry out only one movement between its collecting and unloading position and unloading can take place automatically without need for a special scraping device. Because of the position of the tines (Z) there is no risk of undesirable loss of coarse material prior to unloading.Type: GrantFiled: June 2, 1999Date of Patent: January 30, 2007Assignee: Fea Gesellschaft F. Recycling V.E.U.A.M.Inventors: Harry Wiljan, Roland Carra