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| Number | Title | Issue Date |
| 7622018 | Arrangement for and a method of treating pulp, and a method of modernizing a pulp tower An arrangement for and a method of treating pulp, and a method of modernizing a pulp tower are disclosed. The arrangement and method relate to treating pulp in connection with high-consistency pulp towers, and especially to means (36, 42) for diluting pulp ar... | 11/24/2009 |
| 7396434 | Catalytic reactor process for the production of commercial grade pulp, native lignin and unicellular protein A continuous and batch system to produce cellulose, native lignin and unicellular protein from any form of vegetation in a closed process. The biomass is mixed in the impregnate solution of nitric acid and/or ammonium hydroxide and water. After a period of time at r... | 07/08/2008 |
| 7390378 | Method of curling fiber and absorbent sheet containing same A method of providing papermaking fibers with durable curl comprising: a) introducing papermaking fiber into a rotatable drum adapted for operation at elevated pressure; b) rotating the drum containing the papermaking fiber while maintaining: i) the fiber in aqueous... | 06/24/2008 |
| 7364638 | Process for the hot dispersing of a paper fiber stock The present invention is directed to a process for the hot dispersing of a paper fiber stock that includes providing an aqueous paper fiber stock and pressing the aqueous fiber stock in a thickening device. In this manner, water is at least partially removed from th... | 04/29/2008 |
| 7364639 | Method of producing twisted, curly fibers A method of forming twisted, curly fibers from a wet wood pulp without the aid of a wet fluffing process or a chemical cross-linker. The method includes forming the wet wood pulp into fiber bundles and subsequently thermally drying the fiber bundles. The invention a... | 04/29/2008 |
| 7351306 | Cooking of cellulose pulp in a cooking liquor containing pre-evaporated black liquor The method is for cooking of cellulose pulp in which the raw material, preferably in the form of chips, undergoes a successive elevation of temperature towards the cooking temperature while the chips are first impregnated with an impregnation liquor followed by cook... | 04/01/2008 |
| 7318883 | Equipment and method in a paper or board machine for mixing of fresh stock and of water for dilution of fresh stock The invention concerns an equipment and a method in a paper or board machine for mixing fresh stock (M) with water (V) used for dilution of the fresh stock. At the point of mixing (K) of the dilution water (V) and the fresh stock (M) passed from the pipe (13)... | 01/15/2008 |
| 7291244 | Pulp flaker 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 moistur... | 11/06/2007 |
| 7287899 | Method for continuously and dynamically mixing at least two fluids, and micromixer The invention relates to a method for continuously and dynamically mixing at least two fluids. Said method comprises the following steps: a) the rotor (1) of a micromixer is rotatably driven, said micromixer comprising a rotor (1) which is provided wit... | 10/30/2007 |
| 7282114 | Method for processing pulp The object of the invention is a method and a device for dispersing pulp, especially pulp containing waste paper, in which method ground pulp mass is fed between the blade surfaces (4) of a dispersing device that are brought in a rotating movement in relation to one... | 10/16/2007 |
| 7279073 | Apparatus for liquid-based fiber separation 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 ... | 10/09/2007 |
| 7189306 | Process of treating lignocellulosic material to produce bio-ethanol This invention relates to a process of treating a lignocellulosic material to produce bio-ethanol. The process includes the steps of: (a) exposing the lignocellulosic material to conditions including a pH not less than about 8, and steam at a first pressure, to prod... | 03/13/2007 |
| 7156952 | Method and arrangement for oxygen delignification of cellulose pulp The invention relates to a method and arrangement for alkaline oxygen delignification of cellulose pulp. By adding alkali in the final phase of the oxygen delignification one can ensure that an optimal predetermined end-pH is obtained. This provides advantages in th... | 01/02/2007 |
| 7097740 | Method and screen for screening at least two pulp mixtures The invention relates to a method and a screen for screening two or more pulp mixtures with different roughness. The screen comprises a first screen cylinder and a second screen cylinder. A coarse first pulp mixture is fed into the inlet end of the first screen cyli... | 08/29/2006 |
| 7070677 | Method and apparatus for treating pulp with filler The present invention relates to a method of and apparatus for treating pulp with filler. The method and apparatus according to the invention are especially well suitable for treating pulp with filler, the mixing of which to the pulp requires simultaneous treatment ... | 07/04/2006 |
| 7005034 | Method in connection with the production of mechanical pulp A method in connection with the production of mechanical pulp from a cellulose containing material wherein the material is processed in at least one refining step to produce pulp. According to the invention, the pulp is fractionated (4), after a first refinin... | 02/28/2006 |
| 7001483 | Apparatus for making carboxylated pulp fibers An apparatus for carboxylating wood pulp which utilizes the wood pulp bleach plant and the method of carboxylating the pulp which takes place in the bleach plant. ... | 02/21/2006 |
| 6986829 | Process and container for stacking high-consistency stock Process and container for stacking and diluting paper fiber stock. The process includes stacking a high-consistency stock in a first volume for defined dwell time, conveying stock to second volume arranged to adjoin downstream first volume, diluting stock in second ... | 01/17/2006 |
| 6986832 | Arrangement for mixing flows in papermaking process The invention relates to a method and a mixer for mixing flows of a papermaking process. In the invention, a first flow is conveyed through a tube, and turbulence is generated in it by means of form parts located on the inner periphery of the tube. The mixing zone o... | 01/17/2006 |
| 6946072 | Method and apparatus for washing a fibre suspension A method for washing a fibre suspension with washing liquid, in which, in accordance with the invention, the fibre suspension is introduced into an annular treatment channel (24) that has an inlet end (72) and an outlet end (73) and is concentri... | 09/20/2005 |
| 6911118 | Pulper for producing paper pulp from waste paper A pulper for producing paper pulp from waste paper containing undesired scrap particles includes a container (1) forming a chamber (4) defined by a bottom wall (5) and a cylindrical circumferential wall (6). A paper tearing member (7 | 06/28/2005 |
| 6881297 | Process for aerating dispersions A device and process for aerating dispersions, particularly for flotation of pulp suspensions, in a de-inking process where the pulp suspension containing dirt particles is sprayed into a tank together with air. The air is injected at a minimum of two successive poi... | 04/19/2005 |
| 6850592 | Methods for identification and verification using digital equivalent data system Apparatus and methods in which one or more elemental taggants that are extrinsically placed in an object are detected by x-ray fluorescence analysis to identify or authenticate the object are described. The taggant is manufactured as part of the object or the taggan... | 02/01/2005 |
| 6841036 | Process for the oxygen delignification of pulp in two stages with higher pressure in the second stage A system and process for the oxygen delignification of pulp consisting of a lignocellulose-containing material that has a mean concentration of 8-18% pulp consistency. The oxygen delignification takes place in a first stage with a short dwell time of about 3-6 minut... | 01/11/2005 |
| 6793771 | Ozone bleaching of low consistency pulp Provided is a process for bleaching pulp with ozone. The process involves preparing a slurry of cellulosic pulp having a consistency in fibers of from 1-5 weight %. Such a low consistency slurry is then mixed with ozone under high shear conditions. The ozone is then... | 09/21/2004 |
| 6773547 | Process for the bleaching of low consistency pulp using high partial pressure ozone Provided is a process for bleaching pulp with ozone. The process involves preparing a slurry of cellulosic pulp having a consistency in fibers of from 1 up to 5 weight %. Such a low consistency slurry is then mixed with high partial pressure ozone under high shear c... | 08/10/2004 |
| 6740198 | Method and arrangement for mixing pulp components in the manufacture of paper The invention relates to a method of mixing pulp components in the manufacture of paper, in which method the pulp components to be mixed are led to a mixing point along tubes arranged inside each other. The pulp component flows are mixed by generating turbulence in ... | 05/25/2004 |
| 6673201 | Top separator with intraseal for digester vessel in a pulp or fiber processing system A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring moun... | 01/06/2004 |
| 6623156 | Method for mixing a fluid mass Method and apparatus for treating a fluid mass or stock, particularly couch stock or the like in paper making. Stock material is fed to a vessel having a mixing arrangement comprising rotatably arranged processing means. At least two processing means are ... | 09/23/2003 |
| 6579412 | Process for ozone bleaching of low consistency pulp Provided is a process for bleaching pulp with ozone. The process involves preparing a slurry of cellulosic pulp having a consistency in fibers of from 1-5 weight %. Such a low consistency slurry is then mixed with ozone under high shear conditions. The oz... | 06/17/2003 |
| 6579411 | Bleaching medium consistency pulp with ozone A method of bleaching cellulose pulp with ozone includes pumping cellulose pulp in form of a fiber suspension having a consistency range of 5 to 25% with a high-consistency pump to a fluidizing Mixture in which oxygen and ozone containing gas is introduce... | 06/17/2003 |
| 6547923 | Process for bleaching medium consistency pulp with ozone using a pressurized fluidizing mixer A method of bleaching cellulose pulp with ozone includes pumping cellulose pulp in form of a fiber suspension having a consistency range of 5 to 25% with a high-consistency pump to a fluidizing mixture in which oxygen and ozone containing gas is introduce... | 04/15/2003 |
| 6491787 | Method for heating pulps A method and apparatus for heating cellulose pulp with steam are provided. Low-pressure (e.g. 3-5 bar (abs.)) steam is supplied into the pulp flowing as a plug flow in such a way that in the flow direction of the pulp, before supplying the low-pressure st... | 12/10/2002 |
| 6471825 | Method for deflocculating and chemically loading fibers in a fiber suspension with calcium carbonate An apparatus for continuously loading fibers in a fiber suspension with a chemical compound includes a deflocculating vessel having an interior chamber, a fluid inlet connected with the interior chamber, a fluid outlet connected with the interior chamber,... | 10/29/2002 |
| 6451163 | Method of handling comminuted cellulosic fibrous slurry in a cylindrical vessel In a cellulose pulp handling vessel having a first diameter material storing or treating portion above a second diameter discharge which is at least 20% less than the first diameter, reduced compression of the material and reduced power requirements of an... | 09/17/2002 |
| 6447645 | Feeding cellulose material to a treatment vessel A feed system for a cellulose pulp treating vessel (such as a continuous digester) is not limited by the required L/W ratio of the pump feeding a wood chip slurry to a high pressure transfer device, the feed system may be kept at a low temperature to mini... | 09/10/2002 |
| 6440272 | Device for mixing stock suspensions Process and device for the mixing of suspensions with possibly different natures and/or compositions in the stable section of a paper machine. In the process, a suspension, particularly of the backwater of the paper machine, is piped in a mixing tube with... | 08/27/2002 |
| 6436233 | Feeding cellulose material to a treatment vessel A feed system for a cellulose pulp treating vessel (such as a continuous digester) is not limited by the required L/W ratio of the pump feeding a wood chip slurry to a high pressure transfer device, the feed system may be kept at a low temperature to mini... | 08/20/2002 |
| 6419786 | Method for bleaching wood pulp containing recycled paper A method of treating wood-fiber pump, particularly wood-fiber pulp that contains recycled paper, comprises delivering the pulp to and advancing the pulp in a heating zone while delivering steam to the heating zone. The pulp is finely-divided in a disperse... | 07/16/2002 |
| 6379495 | Process for the production of cellulose paper pulps by biodelignification of vegetative masses Process for the production of cellulose paper pulps from vegetable masses, comprising the steps of mixing and conditioning a vegetative mass suitable to form a culture medium with an inoculum constituted of edible ligninolythic mushrooms, such as Lentinus... | 04/30/2002 |
