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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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JPH11241285A |
To efficiently purify pulp by applying a preliminarily purifying treatment to a lignocellulose material under an acidic condition before subjecting the lignocellulose material to a lignin-removing treatment with an alkali. In this method...
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JPH11217782A |
To enable continuous production of large amount of filament pulp by digesting a vegetable fiber raw material containing filament to soften the raw material, cutting the treated fiber raw material into a prescribed length and then continu...
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JP2900091B2 |
Processes for preparing kraft pulp are disclosed. The processes include pretreating cellulosic material or chips with spent cooking liquor at the temperature of about 20 to 100 DEG C, followed by heating the impregnated chips at the temp...
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JP2894195B2 |
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JPH11504394A |
A method for making lignocellulose fibers, which may be optionally coated with a suitable thermoplastic, wherein the starting materials may be chosen from a wide variety of generally non-recyclable contaminated wood, paper, and/or plasti...
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JP2876428B2 |
A method for improving pulp brightness utilizes a combination of a distributed total white liquor charge during the warm fill, hot fill and cooking stages of a batch cooking process and low cooking temperatures during the cooking stage. ...
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JP2873296B2 |
A method for refining lignocellulose-containing material into pulp in a disc refiner comprises preheating the material to a temperature greater than the glass transition temperature of lignin in the material, and holding this temperature...
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JP2841760B2 |
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JP2792724B2 |
A process for the comminution, in particular defibrillation, and reaction of fibrous materials having a high dry solids content with the addition of a circulating medium, preferably a carrier gas and/or reaction agent, as well as optiona...
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JP2783486B2 |
PURPOSE: To provide a method and device enabling the pressure difference within a chip bin to be maintained irrespective of the case in a vacuum or pressurized state when put to a pressure condition greater than a desired level. CONSTITU...
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JPH10506441A |
(57) It is the method and equipment for the cellulose pulp continuous production for summary paper manufacture processes. A container consists of the 1st osmosis zone and the second grinding zone including the container in which this equ...
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JP2589882B2 |
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JP2587300B2 |
An apparatus for improving the pulping characteristics of wood chips in which a pair of closely operating rolls are provided for supplying compressive force to chips passed therebetween, at least one roll having an aggressively contoured...
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JP2587120B2 |
The invention relates to paper making industry and provides a process for reducing the resin content of wood which comprises applying an inoculum of a penetrating fungus to the wood and maintaining environmental conditions effective for ...
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JPH08510728A |
(57) Expansion of the summary plant cell is regulated by relief and surrender of the wall, and is considered that a catalyst is carried out with elusive "wall relaxation" enzyme. By adoption of reconstruction approach, we found out to th...
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JPH08510015A |
The fungi Schizophyllum commune, Trichaptum biforme and Phanerochaete gigantea are useful in reducing the pitch content of pulps and pulpwoods used in making cellulosic products.
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JP2542256B2 |
In the continuous cooking of comminuted cellulosic fibrous material (e.g. wood chips) to produce paper pulp, the material is subjected to a minimum of mechanical action, especially under high temperature and pressure conditions, so as to...
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JPH08507333A |
A process is disclosed for producing chemomechanical and/or chemothermomechanical wood products from lignocellulosic raw materials, such as wood chips. The raw materials are impregnated with a SO2-containing solution and then subjected t...
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JPH08506627A |
PCT No. PCT/SE94/00074 Sec. 371 Date Mar. 7, 1995 Sec. 102(e) Date Mar. 7, 1995 PCT Filed Feb. 1, 1994 PCT Pub. No. WO94/18383 PCT Pub. Date Aug. 18, 1994A method of producing chemimechanical pulp, comprises the steps of grinding wood in...
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JP2510424B2 |
Method of activating aqueous lignocellulosic material with a gas containing nitrogen oxide, followed by a delignification stage for the purpose of obtaining a high quality end product with no or only a slight effect on the environment. I...
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JPH08503744A |
PCT No. PCT/AT93/00183 Sec. 371 Date Jul. 13, 1995 Sec. 102(e) Date Jul. 13, 1995 PCT Filed Dec. 2, 1993 PCT Pub. No. WO94/12719 PCT Pub. Date Jun. 9, 1994The present invention relates to a process for producing viscose pulp from lignoce...
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JPH0830311B2 |
A method for the production of cellulose by the batch cooking process, wherein the digester is filled with chips and cooking liquor, and the batch is cooked at elevated temperature and pressure in order to obtain a delignified cellulose ...
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JPH0841791A |
PURPOSE: To simply reduce metallic impurities in a pulp and facilitate the bleaching by extraction-treating an unbleached sulfite pulp with a caustic agent. CONSTITUTION: A washed unbleached sulfite pulp is extraction-treated with a caus...
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JPH07216771A |
PURPOSE: To improve the yield of pulp by preliminarily digesting a lignocellulose material with a preliminary digestion liquid containing a nitrous acid salt and digesting by caustic cooking. CONSTITUTION: Caustic cooking of a lignocellu...
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JPH0759795B2 |
A wood particle screen particularly useful for separating fines from wood chips in which a bed of flexible foraminous material having holes therein sized to permit fines to pass therethrough is flexibly mounted for receiving a flow of wo...
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JPH0742978B2 |
A self-loading, controlled deflection roll for forming a pressure nip with another roll has at least one support shoe, and preferably two opposed support shoes, mounted in a stationary support shaft for controlling the deflection of the ...
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JPH0742669B2 |
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JPH0742670B2 |
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JPH0718114B2 |
Pulp mill effluent streams having a pH greater than 7.0 are decolourized by reducing the acidity of the effluent to below pH 4.0 so that colour bodies are precipitated from the effluent. The effluent is filtered and organic compounds are...
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JPH06327463A |
PURPOSE: To provide a new kind of microbe applicable to such industrial uses as to decompose or oligomerize lignin typified by pulp bleaching, and to provide usage thereof. CONSTITUTION: There are provided a microbe SKB-207 strain excell...
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