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JP2006527800A |
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...
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JP3682935B2 |
To provide a method for improving the mechanical strength characteristics of chemical cellulose pulp (esp. kraft pulp). The mechanical strength characteristics of chemical cellulose pulp is improved by low-temperature dipping infiltratio...
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JP2005520945A |
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...
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JP2004285533A |
To provide a method for the preheating of wood chips before the primary refining treatment in the production of thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP) or bleached chemimechanical pulp (BCTMP) of wood chip to give ...
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JP3560162B2 |
Low temperature steaming and slurrying of wood chips results in significant improvement in treatment, the chips being maintained at a temperature below 110 DEG C. (more desirably at about 105 DEG C. or less, and most desirably at about 1...
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JP2004183189A |
To reduce energy and cost in a method for producing chemical pulp by steaming wood chips with knots in a digester.The method for producing chemical pulp is to digest wood chips with knots in the digester to produce the chemical pulp and ...
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JP2004156175A |
To provide a method for separating lignin from a vegetable cellulose, capable of saving energy and being environmentally friendly in order to solve problems in which a conventional separation means consumes energy in large amounts and is...
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JP3524558B2 |
A system and method for feeding comminuted cellulosic fibrous material such as wood chips to the top of a treatment vessel such as a continuous digester provide enhanced simplicity, operability, and maintainability by eliminating the hig...
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JP3496872B2 |
To provide a method for supplying a finely crushed fibrous material to the top part of a treating vessel, aiming for the improvement of its simplicity, operation and maintenance by conducting a pressurized transportation by using a slurr...
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JP3461270B2 |
To provide a process for ground cellulose fibrous material and an assembly for the same. The steaming process is carried out by supplying the material to a vertical type tip pin having an one-dimensional reducing part and a side relief b...
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JP3447264B2 |
A method of treating wood chips allows chemical pulp (e. g. kraft pulp) to be produced having enhanced fiber strength properties. In a first zone or stage the chips are cool impregnated (e. g. a temperature of about 60-120 DEG C.) with a...
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JP2003522844A |
(57) [Summary] The present invention relates to a method for removing lignin from a lignocellulose-containing material, which comprises treating the lignocellulose-containing material with delignin gas (the gas containing chlorine dioxid...
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JP2003522845A |
(57) [Summary] The present invention comprises treating a material containing lignocellulose with a delignin gas containing a gas compound containing at least one oxygen atom, for example a gas containing chlorine dioxide, prior to a hig...
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JP2003129391A |
To provide an effective feed system and a related method for use in introducing a comminuted cellulosic fibrous material slurry into a treatment vessel.The feed system 111 for the cellulose pulp treatment vessel (such as a continuous dig...
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JP2003511569A |
Methods for producing chemical pulp from lignocellulose-containing material in processes for kraft pulp production are disclosed including charging the lignocellulose-containing material to a digester, initially treating the lignocellulo...
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JP2003082592A |
To provide a method for producing nonwood pulp, capable of producing the pulp through an environment-friendly system.In this method for producing the nonwood pulp, a flue gas is washed with a potassium-based alkaline solution so as to fo...
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JP2003020581A |
To provide an effective system and method for handling exhaust gas, over-flown fluid and a solid discharged from a pressurized container.What is disclosed is a pressurized container 10 equipped with a pressurized chamber 22, an over flow...
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JP2003020582A |
To provide a method for removing water soluble compounds from wood chips before the cooking of the wood chips.This method for treating the wood chip before the cooking of the wood chips in a cooking pot is characterized by comprising a p...
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JP2002363877A |
To solve problems: pulps having fibers longer than the fibers of wood pulps can be produced from various hemps, and also from raw materials comprising leaves of pineapple, banana or the like, and they are valued highly as long fiber pulp...
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JP2002541355A |
The invention relates to a method for separating lignocellulose-containing biomass, especially wood, into the essential components in the form of lignin, hemicellulose and cellulose, with the following steps: a) pre-hydrolyzing the ligno...
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JP2002536563A |
A substantially sulfur free process for the manufacturing of a chemical pulp with an integrated recovery system for recovery of pulping chemicals is carried out on in several stages involving physical and chemical treatment of lignocellu...
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JP2002294574A |
To obtain a chemithermomechanical pulp having bulkiness, excellent strength and optical characteristics from a high-volume heavy material having ≥4.0 Runkel ratio and a thick cell wall.This method for chemithermomechanical pulp product...
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JP2002533587A |
Disclosed is a method for producing kraft wood fiber having an alpha-cellulose content greater than 97 % and a viscosity greater than 40 centipoise. The method involves prehydrolyzing hardwood chips with water, kraft cooking, bleaching a...
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JP2002275784A |
To store and transport an enormous amount of a non-wooden fiber resource as a pulp raw material without decaying the resource, stably supply the resource to a huge pulp factory, easily produce and supply excellent pulp, and simultaneousl...
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JP2002266268A |
To easily supply and produce excellent pulp by storing and transporting a large amount of non-wood fiber source as a raw material of pulp to stably supply it to a huge pulp mill, and promote the measures and streamlining of environment.T...
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JP3325324B2 |
A process for delignifying raw cellulose which comprises a preliminary treatment for impregnating raw cellulose with a monopersulphuric acid solution, a successive filtration without washing with recycle of the filtered liquid to the fir...
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JP2002529618A |
A process for the production of pulp using alkaline delignification is disclosed, wherein cellulosic material is initially treated with steam, and a chelating agent is added in connection with the steam treatment. The end pH of the steam...
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JP2002517621A |
[Task] Provided is an improved method for delignin of a lignocellulosic material using polyoxometallate. A method in which a lignocellulosic material is first treated with an alkaline solution in the presence or absence of anthraquinone,...
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JP3292854B2 |
A chip feeding system for a continuous digester provides for a greater rate of delivery of chip slurry to the digester, and is much less expensive than conventional chip feeding systems, typically being only 40-50% of the height of the c...
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JP2002506133A |
Chemical cellulose pulp (e.g. kraft pulp) is produced with enhanced strength and/or yield using a strength or yield enhancing additive such as polysulfide or anthraquinone or its equivalents or derivatives, and in a manner that allows ef...
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JP2002004187A |
To provide an improved system and method for feeding a slurry of a finely pulverized cellulose fibrous material to the top of a treatment vessel such as a digester.A chip slurry subjected to steaming treatment is pressurized with one or ...
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JP2001329479A |
To provide effective feed system and method used for introducing slurry of ground cellulosic fiber material into a treating tank.A feed system 111 of a cellulose pulp treating tank (e.g. continuous type digesting can) is kept so as not t...
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JP2001316992A |
To provide an apparatus and a method for supplying a slurry of a wood chip-like ground cellulose fibrous material to the top part of a continuous cooker-like treating tank.A cellulose material is treated to remove metals before digesting...
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JP2001295189A |
To provide a method for producing chemical pulp, in which metals can effectively be removed from pulverized cellulose fiber materials (for example, wood chips) before a bleaching process. This method for producing the chemical pulp, comp...
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JP2001248083A |
To store and transport a huge amount of nonwoody and woody resources as raw materials of a pulp without putrefying, to stably supply the resources to a huge pulp plant, to easily produce and supply a large amount of the excellent pulp an...
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JP2001509845A |
A process for producing fibrous materials for the manufacture of cellulose, paper or wood materials by using at least one dicarboxylic acid dialkyl ester and/or a copolymer of polyester-polyether and/or fatty acid polyol monopolyester, d...
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JP3178752B2 |
PURPOSE: To eliminate a low yield of a component constituting pulp. CONSTITUTION: A solvent solution of a chlorine-based vapor defatting and washing organic solvent is heated, boiled and vaporized in operation to treat a woody material a...
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JP2001115389A |
To give a high wet strength properties, temporary wet strength properties and dry strength properties and improved compression strength and compression resistance desired in rations applications of paper. This paper contains aldehyde-mod...
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JP3126763B2 |
PURPOSE: To obtain uniform craft pulp with lower high-pressure steam consumption by impregnating/cooking the slurry of a cellulosic fibrous material after heating/soaking it and withdrawing/returning a black liquor from/to an impregnatin...
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JP2000226785A |
To provide a method and device for minimizing the dispersion of an odorous TRS-containing gas from a feeding system used for the treatment of a crushed cellulose fiber material. This device is provided by feeding a cellulose material thr...
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JP2000509115A |
Provided is a process for making pulp having the steps of: contacting an undigested cellulosic fiber material with a pretreatment liquid formulated from a mixture comprising alkali metal bicarbonate and alkali metal hydrogen sulfide as r...
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JP2000136492A |
To provide the technology enabling is to mass-produce pure paper made of 100% non-wood pulp without using wood pulp from the view point of the protection of global environment, in consideration of the fact that bagasse pulp has largely b...
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JP2000136489A |
To provide the methods for increasing the pulp production efficiency, for example, increase in pulp yield, in the batchwise production of kraft pulp. In the first step, a lignocellulosic substance and the first alkaline cooking liquor co...
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JP2000504072A |
The invention relates to a process and apparatus for pretreating pulp raw material, to be subsequently prepared in a chemical pulping process, and for preparing cellulose pulp from a fibrous starting material. According to the process th...
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JP2000080588A |
To provide a method for producing carbohydrate solution and sugar along with pulp of good quality from millets such as sugar cane, sweet sorghum, or the like, in consideration of the fact that conventional pulp from millet-strained lees ...
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JP2000034686A |
To provide a method for assembling a vessel and handling a cellulose fiber material, specified in reduction of compression of the cellulose material and power requirement of a stirrer (when used) brought to be smaller, compared with usua...
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JPH11335988A |
To efficiently remove granules such as dust, sand, or the like, existing in the flow of wood chips by the cooperation of a fence type screen and plural sets of porous screens. Wood chips stuck with sand, dust, or the like, is fed to a fi...
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JP2984798B2 |
Processes for preparing pulp from lignin-containing cellulosic material are disclosed including a prehydrolysis step followed by neutralizing hydrolysate and the prehydrolyzed cellulosic material in the reactor with alkaline neutralizing...
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JPH11512789A |
The present invention relates to the use of certain Basidiomycette fungi, in particular, white rot fungi, such as Phlebia tremellosa, Trichaptum biforme, Schizophyllum commune, and Phanerochaete gigantea, in preconditioning wood or pulpw...
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JPH11241284A |
To provide a method effective as a preliminary treatment process for a method for pulping succulent plant leaves containing long fibers to produce long fiber pulp. This method for treating plant leaves comprises the first process for cut...
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