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WO/2009/054041A1 |
[PROBLEMS] A high-pressure homogenizer is provided in which a cleaning water is introduced by a simple operation and a feed-holding hole part can be easily cleaned without fail without the need of disassembling/assembling a pressure-elev...
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WO/2009/050336A1 |
The present invention relates to a method for treating pectin-containing ligno- cellulosic raw materials in a high-yield pulping process utilizing one or more treatment stages at alkaline conditions. The invention provides a method for c...
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WO/2009/046283A1 |
An apparatus for treating plant biomass is described herein. Generally, the apparatus includes a pressurizable vessel and a heating element in thermal communication with the vessel. Also described herein are methods of treating plant bio...
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WO/2009/034230A1 |
A method and an apparatus for manufacturing a fibre mass suspension. The fibre mass suspension is produced by mixing together a fibre material (FM) and water (W) in a pulper (1). The formed fibre mass suspension is divided into an accept...
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WO/2009/034056A1 |
The invention relates to the use of carbon dioxide for the removal of stickies from a pulp suspension containing recycled fibers and for decreasing the content of calcium carbonate in flotation reject. The present also relates to a proce...
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WO/2009/015701A1 |
The invention relates to a method for producing fine material from fibrous material rejects. Said method consists of the following steps: the fibrous material rejects are collected after a first grinding and a first sorting of the fibrou...
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WO/2009/018469A1 |
A method of preparing cellulosic biomass material for subsequent processing first comprises moving at least one stream of biomass material along a flow path. Then, the stream of cellulosic biomass material can be explosively dried and pu...
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WO/2009/005441A1 |
A screw pipe unit (110) intended to cooperate with and at least partly enclose a screw (120) in a plug screw feeder (100) for cellulose chips/pulp is provided. The screw pipe unit comprises a plurality of openings (116) for filtrate dewa...
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WO/2009/003770A1 |
The invention relates to a process for making paper, wherein a pulp suspension, which comprises mechanical pulp, is thickened in a dewatering device and is thereafter diluted with water and pumped to a storage tank, then diluted again an...
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WO/2009/000348A1 |
The method is used to process waste paper (M) in order to allow the production therefrom of cardboard or of packaging papers. The pulp suspension (S) formed by dissolving is divided by fractionation (3) into a short-fiber fraction (F1) a...
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WO/2008/144903A1 |
A process for concurrent production of lignins, fuel alcohol, and biogas from lignocellulosic feedstocks. The process comprises: (1) pretreating a lignocellulosic feedstock to produce a solubilised liquid components stream comprising lig...
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WO/2008/142910A1 |
Provided is a screen plate of a rotor for cutting wastepaper, which functions as a fixed blade and the running cost of which can be remarkably reduced. In the screen plate (50), when the eye hole peripheral edges (B) positioned on the up...
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WO/2008/139289A2 |
The invention concerns a flotation cell (1; 30) for purifying fibrous suspensions through the dispersion of air microbubbles (22), comprising: a container (2; 31); feed pipes (4; 34) for conveying the suspension (3) into the container (2...
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WO/2008/138109A1 |
Using site-directed mutagenesis to mutate the Xanthomonas campestris pectate lyase gene, variants of Xanthomonas campestris pectate lyase with improved thermostability and/or enzymatic activity have been expressed in Escherichia coli, an...
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WO/2008/136442A1 |
A high price regenerated paper recycle business in which classification range of utilization of regenerated paper can be enlarged, and shredded waste paper can be circulated in recycle process while having economical value. The crush/col...
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WO/2008/135783A1 |
A process for the treatment of biomass is provided. The process comprises forming a biomass slurry by mixing biomass with a working fluid, and inducing the biomass slurry to flow through an inlet into a passage. A high velocity transport...
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WO/2008/134885A1 |
A system and method for optimizing a process for refining lignocellulosic granular matter such as wood chips use a predictive model including a simulation model based on relations involving a plurality of matter properties characterizing...
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WO/2008/132228A1 |
The invention relates to a method for reducing the energy consumption at the refining of a pulp suspension in a papermaking process. The reducing of the e nergy consumption is provided by treating said pulp suspension with non-stoichiome...
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WO/2008/128505A2 |
Disclosed is a pulper for separating fibers from a mixture. Said pulper comprises a perforated metal sheet, the holes of which have a diameter of less than 5 mm. The extremely small hole diameters are not clogged by the mixture in the pu...
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WO/2008/129048A1 |
The present invention relates to a method for the production of bleached wood particles, and to a method for the production of wood materials ranging from light-toned to white, which are produced from the bleached wood particles.
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WO/2008/125313A1 |
The present invention relates to a method and a device for treating waste paper, wherein the waste paper is dissolved into fibers, the fibers are fractioned into a long fiber fraction and a short fiber fraction, the long fiber fraction a...
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WO/2008/122692A1 |
An injector (2) for a flotation cell (1), comprising a feed channel (3) for feeding a fibre suspension flow to the flotation cell (1), a flow distribution element (6) for distributing the fibre suspension flow fed to the injector (2) int...
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WO/2008/087337A2 |
The invention relates to a method for producing a sheet of tracing paper having a darkness index of less than 40 % measured in accordance with ISO 2469, in which a paper pulp based on virgin cellulose fibres in aqueous suspension is subj...
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WO/2008/081078A1 |
The present invention relates to a method for manufacturing mechanical pulp, the method comprising -introducing raw material of the mechanical pulp, -refining the raw material in a first refining stage in order to form the mechanical pul...
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WO/2008/081028A2 |
The present invention relates to processes and apparatus for improving municipal waste treatment in autoclave processes. Improvements relate to the use of air-waste stream treatment, indirect heating with thermal fluid, forced steam tran...
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WO/2008/077450A1 |
The invention relates to a method for the production of a tissue web (1) produced from a material suspension comprising fibers. To this end, the volume and the tear length is to be improved, with minimized freeness degree, such that the ...
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WO/2008/074220A1 |
A preparation method of a bamboo pulp comprises the steps of preparing material, cooking and bleaching. In the step of preparing material, bamboo material is obliquely cut at the angle of 10-85ºinto bamboo chip with a chip cross-section...
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WO/2008/071255A1 |
The pulper is used for comminuting and suspending papermaking material. It has a container (1) which is open at the top and which has a cylindrical side wall (5) and a driven rotor (2) which is disposed eccentrically in relation to the c...
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WO/2008/058003A2 |
This invention provides a composition and method for improving a mechanical pulping process by decreasing freeness and amount of shives, providing energy and chemical savings, and enhancing brightness and mechanical strength of a paper p...
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WO/2008/053070A2 |
The present invention provides a non-destructive method for measurement of recycled pulp or pulp immersed in suspension. The method of the invention enables real-time or on-line evaluation of particles in recycled pulp or pulp, especiall...
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WO2007092448B1 |
A solid, liquid or gaseous component is removed from a gas mixture. The gas mixture is passed in contact with a filter comprising a highly refined cellulose having a lignin concentration of at least 1% by weight and a water retention cap...
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WO2007143182A9 |
A process for bleaching mechanical wood pulp is provided comprising subjecting the wood pulp to at least one bleaching stage with one or more bleaching agents in the presence of one or more optical brightening agent, wherein the bleachin...
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WO/2008/007204A1 |
There is described a modular system for valorizing and recovering waste material from a pulper of the paper industry. The system comprises a grinder, a fine and coarse fraction separator, a soft and hard fraction separator, one or more m...
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WO/2008/003283A2 |
The invention relates to a device for producing or processing pulp, comprising an essentially cylindrical vessel (1) for receiving the fibrous pulp material that is to be dissolved or processed. A rotor (4) which is arranged on the botto...
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WO/2008/003121A1 |
The present invention relates to the strengthening of paper sheets. Banana paper, in particular, exhibits tear resistance across the grain, but can be easy to tear along the grain. The present invention provides for laying cross-fibres a...
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WO/2007/140837A2 |
The invention relates to a method for producing fibrous material with a lignin content of at least 15% for softwood, at least 12% for hardwood, or at least 10% for annual plants, relative to the oven-dry fiber mass in each case, consisti...
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WO/2007/140839A2 |
The invention relates to a method for producing fibrous material consisting of the following steps: production of a chemical solution with less than 25% sulfite (calculated as NaSO3), relative to the oven-dry quantity of the lignocellulo...
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WO/2007/140838A2 |
The invention relates to a lignocellulosic fibrous material made of wood with a breaking length of more than 8 km at 15 °SR and a lignin content of at least 15%, relative to the unbleached oven-dry fibrous material, for softwood, and wi...
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WO/2007/125152A1 |
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) f...
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WO/2007/116473A1 |
It is intended to provide a method and a system for separating an industrially applicable plant outer bark fiber and plant stem core of kenaf or the like into a plant outer bark fiber and plant stem core at a high speed without using hea...
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WO/2007/087037A2 |
Apparatus and method for recovering organic cellulosic fibers from landfill materials (such as post consumer, municipal and industrial waste materials). The apparatus and method selectively introduces waste materials containing organic c...
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WO/2007/077326A1 |
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...
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WO/2007/073342A1 |
The invention refers to a process for manufacturing paper or paperboard from a pulp containing fibres, and where the process includes a stage for eliminating or reducing micro-organisms such as bacteria and/or spores, and where said firs...
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WO/2007/071387A2 |
The invention relates to a plant fibre provided with hardener-free novolak. The plant starting materials are broken down into thermomechanically decomposing aggregates or chemo-thermomechanically decomposing aggregates, in the presence o...
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WO/2007/064287A1 |
The present invention relates to a process for preparing a high-yield pulp comprising a) treating a lignocellulose containing material chemically by means of an oxidising system comprising at least one non-enzymatic oxidant substantially...
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WO/2007/063171A1 |
A method of producing a chemi-mechanical pulp from a raw material comprising wood chips. According to the method, first, the wood raw material is steamed at an elevated temperature to remove air from the wood chips, then, at the impregna...
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WO/2007/056839A1 |
The present invention relates to a process for the manufacture of composite materials having lignocellulosic fibres dispersed in a thermoplastic matrix, while generally maintaining an average fibre length not below 0.2 mm. The process co...
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WO/2007/052760A1 |
[PROBLEMS] To provide an apparatus for treating a papermaking feedstock in which a pulp can be modified based on a cavitation phenomenon in a papermaking step. [MEANS FOR SOLVING PROBLEMS] A liquid to be injected and a suspension contain...
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WO/2007/014161A2 |
A cotton fiber particulate and method of manufacture including, generally, obtaining cotton fibers; mixing the cotton fibers with a solvent such as water to obtain a fiber furnish; milling the fiber furnish; and drying the fiber furnish ...
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WO/2006/136656A1 |
The invention relates to a method for treating pulp useful for papermaking, in which method pulp is treated with a swollenin protein in connection with a mechanical treatment in a pulping and/or papermaking process. The invention also re...
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