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WO/2010/142538A1 |
The aim of the invention is to reduce the damage to cellulosic material during the bleaching treatment of cellulosic material by using catalysts with bleaching activity, without significantly impacting the bleaching performance in the pr...
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WO/2010/138059A1 |
A device (302) for preventing the rewetting of pulp in an apparatus for processing pulp, the apparatus comprising at least one rotatable drum (202, 204) provided with a permeable outer surface (208, 208) and a plurality of axial filtrate...
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WO/2010/138056A1 |
A device (302; 801) for preventing the rewetting of pulp in an apparatus for processing pulp, the apparatus comprising at least one rotatable drum (202, 204) provided with a permeable outer surface (206, 208) and a plurality of axial fil...
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WO/2010/136550A1 |
The invention relates to a process for the bleaching of paper pulp with one or more peroxide oxidizing agents, in which the pulp is first treated in a pretreatment step with at least one inorganic magnesium derivative combined with at le...
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WO/2010/138941A2 |
A modified kraft pulp fiber with unique properties is provided. The modified fiber can be a modified bleached kraft fiber that is almost indistinguishable from its conventional counterpart, except that it has a low degree of polymerizati...
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WO/2010/123433A1 |
The invention relates to an arrangement in a pulp processing process for joining two pulp transporting tubes (3, 4), the arrangement including a feeding tube (4) for feeding pulp, which is to be joined to an opposed inlet tube (3) for tr...
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WO/2010/120228A1 |
An arrangement (30) for removal of a fibre web from a fibre conveying support (21) comprises a doctor beam (34) and a doctor blade (32) having a web contacting edge (33). The doctor blade (32) and the doctor beam (34) are attached to eac...
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WO/2010/116026A1 |
A press (1) comprises a distribution device (2) arranged to receive a liquid suspension of solid biological material and to distribute said suspension horizontally along a dewatering drum (8). A guide plate (22) and a trough (24) arrange...
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WO/2010/115785A1 |
The present invention relates to a process for the production of nano-fibrillar cellulose gels by providing cellulose fibres and at least one filler and/or pigment; combining the cellulose fibres and the at least one filler and/or pigmen...
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WO/2010/115090A1 |
A method for producing pulp by extracting hemicellulosic materials from lignocellulosic materials using water in an extraction stage, wherein the extraction stage is either a single extraction or a double extraction process; treating the...
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WO/2010/112519A1 |
The present invention relates to a process for the production of suspensions of nano- fibrillar cellulose by providing cellulose fibres and at least one filler and/or pigment; combining the cellulose fibres and the at least one filler an...
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WO/2010/108787A1 |
The invention relates to reducing the damage to materials comprising cellulose through the use of bleach-active catalysts when bleach-treating materials comprising cellulose without substantially influencing the bleaching performance in ...
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WO/2010/108783A1 |
The aim of the invention is reduce the damage to material containing cellulose during the bleaching thereof, by using bleaching catalysts, without significantly affecting the bleaching performance. This is achieved essentially by a metho...
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WO/2010/110724A1 |
The invention concerns a method and an arrangement for wash after completed digestion in a continuous digester (1) for the production of cellulose pulp. Digested softened chips that have not been defibrated are fed out from the bottom pl...
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WO/2010/108782A1 |
The aim of the invention is reduce the damage to material containing cellulose during the bleaching thereof, by using bleaching catalysts, without significantly affecting the bleaching performance. This is achieved essentially by a metho...
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WO/2010/108784A1 |
The aim of the invention is reduce the damage to material containing cellulose during the bleaching thereof, by using bleaching catalysts, without significantly affecting the bleaching performance. This is achieved essentially by a metho...
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WO/2010/106077A1 |
A method for inhibiting the formation, deposition and adherence of calcium salt scale to metallic and other surfaces in the equipment, vessels and/or piping of a chemical pulp process facility comprising adding an effective scale inhibit...
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WO/2010/102803A1 |
The present invention relates to the possibility of adjusting arbitrary SiO2/Na2O and/or SiO2/K2O modules by means of locally modified water glasses, wherein additionally the possibility is provided of adjusting arbitrary maturing times ...
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WO/2010/101518A1 |
Device for counteracting rewetting in a wash press for pulp, which comprises at least one insert unit (14) including a filtrate barrier (16) having an axial extension length (L) corresponding to an important part of the length of the fil...
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WO/2010/093220A2 |
A method for manufacturing tissue using recovered paper from corrugated fiberboard as raw material is provided. A method for manufacturing tissue using disclosed recovered paper from corrugated fiberboard as raw material comprises: (a) a...
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WO/2010/080958A1 |
Debonding compositions and methods are disclosed for use in fibrous compositions such as paper-based products. In some instances, debonding agents can be combined with fibers (e.g., cellulose-based fibers) to produce a material having su...
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WO/2010/077172A1 |
The present invention relates to a process for pretreatment of wood raw material comprising two stage milling, wherein at the first stage a coarse milling is carried out, followed by an extraction of pitch and at the second stage a ultra...
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WO/2010/071555A1 |
The invention relates to a method and an arrangement for fixing an endless wire (2) to a cylindrical drum (1). The endless wire (2) is shrunk around the whole circumference of the cylindrical drum (1), such that the edge portions (3) of ...
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WO/2010/063475A2 |
The invention relates to a method for producing a phyllosilicate composition, comprising the following steps: a) making at least one phyllosilicate available which contains monovalent cations; b) treating the at least one phyllosilicate ...
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WO/2010/059762A1 |
A method is described controlling enzymatic decomposition of peroxide comprising contacting a composition containing a peroxide decomposing enzyme with an aldehyde functional polymer added in an amount effective to control the enzyme. Th...
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WO/2010/050883A1 |
The invention relates to an apparatus (1) for dewatering cellulose pulp, which apparatus includes two press rolls (2), arranged next to each other, each press roll (2) being provided inside guide surfaces (3), such that a pulp passage (4...
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WO/2010/049591A1 |
The present invention relates to a method for treating lignocellulosic material or pigment with a reductive bleaching solution wherein the reducing agent is magnesium dithionite the method containing at least one reductive stage and at l...
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WO/2010/046542A1 |
The present invention relates to a method for modifying lignocellulosic material having phenolic groups or derivatives of phenolic groups. The method comprises the steps of oxidizing the phenolic groups or the phenoxy derivative groups o...
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WO/2010/046768A1 |
The invention relates to a method for manufacturing papermaking pulp, including: a step of refining wood, including an ozone treatment, so as to obtain a mechanical pulp; a deacidification step including placing the mechanical pulp in co...
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WO/2010/043766A1 |
A processing system for wood-fibre pulp comprises a separator (102), a treating process (112) and a return device (100). The separator (102) separates vessels (126) from the wood-fibre pulp (120, 122) for the treating process (112), whic...
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WO/2010/039092A1 |
The invention relates to a press washer (100) for cellulose pulp comprising two co-operating perforated press rolls (110, 110'). An inner vat (120) is provided at a distance from the perforated rolls, an inner pulp passage (122, 122') be...
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WO/2010/036192A1 |
An apparatus for washing and/or dewatering pulp comprising a first and a second press roll (102, 104), each press roll (102, 104) being permeable and rotatable about an axis of rotation (218, 218), and a vat (114, 116, 118) in which the ...
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WO/2010/036194A1 |
An apparatus for washing and/or dewatering pulp comprising a first press roll (102) and a second press roli (104), each press roil (102, 104) being rotatable about an axis of rotation (218, 218) and having a permeable outer surface (108,...
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WO/2010/036193A1 |
A sealing arrangement (404) for sealing between surfaces (408, 408, 410, 412, 414} of which at least two surfaces (408, 408) form an outer corner (416). The sealing arrangement (404) comprises a first and a second member (502, 504} and a...
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WO/2010/029214A1 |
The present invention relates to a method for treating mechanical pulp. The method comprises bringing resinous mechanical pulp into process in a process water flow, ozonating the resinous pulp at a temperature which is between 80 and 87Â...
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WO/2010/020583A1 |
The instant invention relates to an improved bleach process in the presence of a metal complex catalyst, hydrogen peroxide or a precursor of hydrogen peroxide and a carboxylic acid anhydride. Further aspects of the invention are the use ...
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WO/2010/019425A1 |
Compositions and methods for the removal of resin from wood chips processed in a Kraft pulping process are disclosed. The method is particularly useful for removing triterpene and triterpenoid resin.
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WO/2009/154549A1 |
A pulp dryer (1) is operative for drying a web (2) of pulp by means of hot air in accordance with the air borne web (2) principle and comprises a cooling zone (10) having a length along which the web (2) is made to travel. The cooling zo...
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WO/2009/144190A1 |
Process for the bleaching of paper pulp in which an aqueous suspension of paper pulp is subjected to a bleaching treatment with hydrogen peroxide in the presence of magnesium hydroxide and of at least one poly-α-hydroxyacrylic acid, its...
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WO/2009/140807A1 |
A multifunctional and integrated pulping apparatus including high density digesting and bleaching is a long-shape structure with round section, its two ends are provided with elliptic end covers, the one end is axially provided with a fe...
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WO/2009/140808A1 |
A process and system for pulping are provided, which are environmental protective, energy saving, circulating and green. The process comprises the following steps: cutting, dust exhausting, fibrillating, cooking and bleaching integration...
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WO/2009/139693A1 |
The present disclosure relates to a cost efficient method of bleaching a pulp by means of ozone. The method comprises subjecting an oxygen delignified pulp to an ozone bleaching stage followed by a chlorine dioxide bleaching stage and a ...
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WO/2009/138700A1 |
The invention relates to a plant for producing hydrogen peroxide by direct synthesis (i.e. hydrogen reacts with oxygen in the presence of a catalyst), which is on-site at a paper mill. The invention also relates to a method for manufactu...
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WO/2009/135987A2 |
The present invention relates to a method for improving the operation and/or adjustablity of sealing elements of a drum washer for washing fiber suspension. In the drum washer (1) said sealing elements (12) are adapted in a space (6) for...
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WO/2009/133053A1 |
A method for reclaiming molybdate or tungstate from an aqueous solution, in which molybdate or tungstate from the aqueous solution is bound to a cationized inorganic carrier material which is insoluble in water at a pH value in the range...
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WO/2009/131527A1 |
A device (1) is provided for distribution of 2-13% cellulose pulp to a movable processing surface (3a) in a pulp processing device to form a pulp web (2) thereon, which is transported together with the movable processing surface, compris...
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WO/2009/130167A1 |
The present invention provides a method for treating lignin-containing fibrous material to reduce its susceptibility to yellowing, comprising pretreating the material with a reducing agent and stabilizing the lignin of the material with ...
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WO/2009/130168A1 |
The present invention provides a method for treating lignin-containing fibrous material to reduce its susceptibility to yellowing, comprising stabilizing the lignin of the material with an oxidizing agent capable of oxidizing phenolic or...
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WO/2009/126106A1 |
The present invention provides a method for the manufacturing of nanocellulose. The method includes a first modification of the cellulose material, where the cellulose fibres are treated with an aqueous electrolyte-containing solution of...
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WO/2009/121926A1 |
A method of improving a strength property of a sheet-formed fibrous material formed from an aqueous slurry of cellulose fiber, comprising coating at least one face of the material with a coating formulation comprising a or consisting of ...
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