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Matches 251 - 300 out of 689

Document Document Title
WO/2007/071187A1
A method for making paper pulp from straw, which utilizes the acute reaction of hydrogen peroxide and alkali substance and the heat energy released from it to make paper pulp. The method comprises the following steps: crushing wheat, ric...  
WO/2007/064296A1
The invention concerns a system for the steam pre-treatment of chips in association with the production of chemical cellulose pulp. The vessel (1) in which the chips are pre-treated with steam (ST) is provided with a ventilation channel ...  
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...  
WO/2007/033091A2
Surfactant penetrant treating solutions and their use in the manufacture of paper products. The surfactant penetrant treating solutions include two types. The first type is an enzymatic surfactant penetrant treating solution, and the sec...  
WO/2006/128304A1
A continuous process for treating a lignocellulosic feedstock is provided. This method comprises pretreating the lignocellulosic feedstock under pressure in a pretreatment reactor at a pH between about 0.4 and about 2.0. One or more than...  
WO/2006/127880A2
A method of producing a modified pulp for use in paper or paper web products, the method comprising treating wood chips in an extraction process to remove hemicellose to form treated wood chips; and subjecting said treated wood chips to ...  
WO/2006/111604A1
The objective of this invention is a method for separating cellulosic fibres, hemicellulose and lignin from parts of plants containing these, such as stems, leaves and seed coats or hulls of cereal, oilseed, fibre or grassy plants. After...  
WO/2006/103317A1
The invention relates to an improved process to break down lignin macromolecules and liberating cellulose fibers in lignocellulosic material using delignifying reactants with a gaseous organic agent as a heating and reaction-accelerating...  
WO/2006/053948A1
A method and an apparatus for processing wood chips, wherein the wood chips are treated with steam in a gas removal apparatus (2). The condensate formed in the gas removal apparatus (2) is removed from the gas removal apparatus (2) and t...  
WO/2006/053939A1
The present invention describes a new method and associated devices for the fabrication of pulp from wood, and other cellulose containing natural materials. The fabrication is fast, environmentally friendly, and economical. Process can b...  
WO/2006/037858A1
A method and an apparatus for preparing cellulose pulp, in which a lignin-containing raw material is impregnated with impregnation liquor and the impregnated raw material is cooked. The black liquor obtained by cooking is concentrated in...  
WO/2006/037857A1
A method and a device for preparing cellulose pulp, in which a lignin-containing raw material chopped into pieces, is impregnated with an alkaline, polysulfide-containing impregnation liquor and the thus impregnated lignin-containing raw...  
WO/2006/037860A1
A process and an apparatus for producing pulp from lignocellulosic material by an alkaline cooking process, in which process preheated chips are treated in an impregnation stage with impregnation liquor, which is taken from the impregnat...  
WO/2006/021618A1
The invention relates to a method for adjusting the fibrous properties of chemical, mechanical or chemi-mechanical pulp, for adjusting the uniformity of the properties and for decreasing any variation in quality. According to the method,...  
WO/2006/006934A1
The invention concerns a method for the impregnation of chips during the manufacture of chemical pulp, where the chips are continuously fed without preceding steam treatment to the top of an impregnation vessel (101) that maintains atmos...  
WO/2006/001758A1
A method and an arrangement for the impregnation of untreated chips during the manufacture of chemical pulp. The untreated chips are fed without preceding steam treatment into an impregnation vessel (10) that comprises an upper part (11)...  
WO/2005/118923A1
The invention relates to the use of a chemical conversion pulp that is produced by methods including an acidic bisulfite pulping method and at least one cold alkali refining step and one hot alkali refining step of the chemical pulp, for...  
WO/2005/106110A1
A method of producing hardwood pulp is provided. This method comprises treating hardwood chips with one or more than one Family 11 xylanase enzyme in the absence of adding an oxidizing enzyme for about 5 minutes to about 120 minutes, to ...  
WO/2005/106111A1
A method and a device (1) for removing gas from wood chips, wherein the wood chips flowing downwards are heated with a steam flow that is cross-directional in relation to the wood chip flow. Preferably, steam is fed (11, 12, 15, 20) to t...  
WO/2005/106112A1
The present invention concerns a method and an apparatus for removing gas from comminuted lignocellulose material, wherein material is heated with steam into a degasification temperature and the heated material flow is led as a dense com...  
WO/2005/103371A1
A process of making bamboo pulp for producing cellulose diacetate is disclosed. The process includes stock preparation, pre-hydrolyzing, digesting, beating, alkali treatment, bleaching, drying, etc. The present process may also used for ...  
WO/2005/103135A1
Mechanical or Chemical pulp is treated with about 0.01 weight % to about 5 weight % of a Mixture. The Mixture is water; diethylenetriaminepentakis (methyl) phosphonic acid or its known salts; polyacrylic acid or its known salts; and opti...  
WO/2005/068709A1
A method of de-inking cellulosic fibrous materials comprising: 1) admixing an alkaline reagent with hydrogen peroxide and an aqueous suspension of inked cellulosic fibrous material in amounts whereby the alkaline reagent and hydrogen per...  
WO/2005/064074A2
The invention relates to a method for removing an extractive during the production of mechanical pulp, the method comprising a step for impregnating chopped ligno-cellulosic material intended for use in pulp production before mechanical ...  
WO/2005/064075A1
According to the invention, polysulfide is used in the manufacture of kraft pulp in the initial stage of a displacement batch process in order to improve the yield. Polysulfide-containing white liquor is added intermixed with the first l...  
WO/2005/062892A2
An eductor for mixing liquids and solid particles includes a nozzle, an initial mixing chamber, a first diffuser, an intermediate mixing chamber and a second diffuser. The nozzle includes a semicircular nozzle outlet that is offset from ...  
WO/2005/024125A1
A process for removing silica from nonwood plant materials involving both chemical and mechanical action is described. The silica-rich epidermal cells are liberated mechanically by a pre-pulping and low-consistency refining step and subs...  
WO/2005/018435A2
A thermally modified microbial-derived cellulose material is described for use as an implantable material in general surgery, plastic surgery and neurosurgery.  
WO/2005/004812A2
A starch composition is made by combining starch with a species which induces gelation, and cooking the starch before or after the combination, to produce a gel. The species which induces gelation is selected from the group consisting of...  
WO/2005/001195A1
A new method for making pulp out of agricultural residue includes harvesting certain portion of plant stalk. The harvested plant stalk is bailed, transported and stored. At the mill, the plant stalk is chopped and goes through pulping pr...  
WO/2004/106624A1
The invention provides for methods for producing pulp (comprising cellulose) and lignin from lignocellulosic material, such as wood chips. The methods involve acid catalyzed hydrolysis. Lignocellulosic material having a relatively high m...  
WO/2004/094624A1
The invention relates to methods for the isolation and development of fungi useful in the enhancement of wood or wood products quality and/or wood or wood products processing, and the decay fungi so developed. Compositions comprising or ...  
WO/2004/092477A1
The invention concerns a method for the pretreatment of chips that are fed to a sulphate cooking process. Through the addition of an acidic fluid to the steam treatment step, a very high ionic concentration of hydrogen ions is achieved. ...  
WO/2004/092478A1
The invention concerns a method for the pretreatment of chips that are fed to a sulphate cooking process. Through acidification of the chips in an acidic treatment fluid with a subsequent draining of free treatment fluid before subsequen...  
WO/2004/050985A1
The present invention concerns a method for decreasing the amount of wood extractives in wood chips. According to the method, nitrogen is added to the wood chips in a form suitable for the micro-organisms occuring naturally in the wood c...  
WO/2004/050983A1
The present invention provides, according to a first aspect, a method for treatment of wood chips from soft or hard wood or a mixture thereof for the reduction of non-process elements and/or organic process disturbing substances in a mec...  
WO/2004/022838A1
A method of the electric pulse treatment of fibrous materials includes preparing a suspension of a selected fibrous material in a liquid medium of suitable chemical composition, treating the suspension with at least one electric pulsed d...  
WO/2004/022842A1
A method of producing mechanical pulp, comprising impregn ation of fiber material with an enzyme-containing aqueous liquid prior to defibration and refining of the fiber material to produce a mechanical pulp. According to the invention, ...  
WO/2004/015195A1
This invention is a method of reducing the resin content of chemical pulps comprising heating wood chips in an aqueous alkaline medium in the presence of an effective deresinating amount of an alkyl alcohol alkoxylate of formula RO[(CH2C...  
WO/2004/013408A1
The invention relates to a method for producing fibrous materials for the manufacture of paper, cardboard and cardboard packaging from waste wood chips. To achieve this, the wood chips are impregnated with an alkaline peroxide solution, ...  
WO2003013810A9
The invention relates to a method for the vacuum impregnation of small-particle material in an impregnating device (16, 16') comprising a dischargeable impregnating chamber (54, 84), an inlet (64, 64') for introducing the material into t...  
WO/2003/106765A1
The invention concerns a method and an arrangement for improved impregnation of chips in association with the manufacture of chemical cellulose pulp. Unsteamed chips are fed into an impregnation vessel (30) in which a fluid level (LIQ&lo...  
WO/2003/080922A1
The invention relates to a method for adjusting the fibrous properties of chemical pulp, mechanical pulp or chemi-mechanical pulp, for adjusting the smoothness of the properties and for decreasing any variation in quality. According to t...  
WO/2003/080924A1
The invention concerns a method for the modification of cellulose fibres with the aim of increasing the strength properties of the pulp. Cellulose derivative, preferably in the form of CMC, is added in associated with alkali cooking and/...  
WO/2003/057979A1
The invention concerns a method for the manufacture of cooked cellulose pulp in which the starting material, preferably chips, undergoes a successive increase in temperature towards cooking temperature while the chips are first treated i...  
WO2002014599A9
The invention relates to a method of steaming lignocellulosic material to be pulped. The material is treated in a superheated steam atmosphere. The treatment can be used for loosening up the structure of fibre for mechanical pulping and/...  
WO/2003/046276A1
In a process of treating wood chips for reduction of the concentration of undesirable inorganic elements prior to cooking in a production line for chemical pulp, the wood chips, having entrapped air, are treated with an aqueous leaching ...  
WO/2003/040462A1
A method of producing pulp for use in making paper products using microwave radiation to pretreat the source of pulp prior to further processing. Practising the method of the invention results in substantial energy savings while decreasi...  
WO/2002/099183A1
In a new process for preparing pulped wood chips for paper making, chips from a hardwood such as eucalyptus are inoculated with aliving culture of one or more white rot fungi. The fungi propagate throughout th ebody of the wood chip, sel...  
WO/2002/090648A1
The invention relates to a feed arrangement for feeding chips to chip bins (1) in the production of cellulose pulp in continuous digesters (16), in which the chip bin is constituted by a greatment vessel having a top and a bottom, in whi...  

Matches 251 - 300 out of 689