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JPH03174079A |
PURPOSE: To obtain mechanical pulp with attainment of the refining energy reduction despite a shortened treatment time without needing sterilization of the stock by treating a fibrous product with an enzyme to allow the enzyme to act on ...
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JPH0345149B2 |
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JPH0340156B2 |
Chemimechanical pulp is produced from lignocellulosic material in a process in which the material is impregnated in two stages. The material is treated in the first stage with alkaline and, subsequent to passing an intermediate draining ...
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JPH03130482A |
PURPOSE: To improve heat consumption by mixing a mixture of spent lye of cooking and wash lye, i.e., a spent liquor with wood chips impregnated with cooking lye, recovering steam from a part of transferred liquid removed from a digester ...
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JPH0329917B2 |
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JPH0397992A |
PURPOSE: To obtain a dissolving paper useful for foods from processed refuse by decomposing beans-processed and squeezed lees using proteinase and lipase and then subjecting the resultant vegetable fiber to paper making. CONSTITUTION: Be...
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JPH0333287A |
PURPOSE: To minimize mechanical actions on chips by making a slurry liquid of a cellulosic fibrous material in an impregnation vessel flow in an upward direction, placing the slurry liquid in a solid/liquid separator at the top of a dige...
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JPH0258397B2 |
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JPH02289193A |
PURPOSE: To readily obtain pulp from Imperata cylindrica which is a species of herbs growing in a short period by washing the herb Imperata cylindrica with water, cutting the herb, dipping the cut herb in a caustic soda solution, removin...
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JPH0253550B2 |
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JPH0253551B2 |
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JPH0252670B2 |
PURPOSE:To obtain the titled composition having improved dispersibility in water and an aqueous solution of an alkali even in the absence of a surfactant, by preparing an aqueous slurry of an organic cyclic compound having a keto and/or ...
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JPH0250236B2 |
Process for manufacturing bleached CTMP pulps comprising a treatment of the lignocellulosic stock with sulphite at a temperature of at least 100 DEG C under saturated steam pressure, and a bleaching operation with the aid of H2O2 in alka...
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JPH02259180A |
PURPOSE: To freely obtain the objective pulp for various uses in high yield while saving the energy consumption by using a specific lignin-decomposing microorganism and specifying the other treating conditions. CONSTITUTION: Raw wood chi...
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JPH0244957B2 |
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JPH02503086A |
Disclosed are tetraphenyl porphyrins which are beta-substituted by fluoro or chloro and/or bear electronegative substituents on the phenyl including one or two water solubilizing substituents. The new porphorins are particularly suitable...
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JPH0240799B2 |
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JPH02216289A |
PURPOSE: To make a carbohydrate in a pulp not noticeably be destroyed and to facilitate a control by adding black liquor besides white liquor to a countercurrent flow zone in amounts so as to provide a fixed high liquid/wood ratio at the...
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JPH0229792B2 |
A process for cooking and bleaching pulp in a closed system, wherein spent liquors from the cooking and the bleaching are recovered and their chemicals are regenerated and recycled as cooking and bleaching chemicals.
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JPH02160986A |
PURPOSE: To maintain a chlorine concentration at a low value and suppress the production of a chlorinated dioxin and a chlorinated furan without reducing the total amount of molecular chlorine by dividedly adding the chlorine into an aqu...
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JPH0220757B2 |
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JPH02119751A |
PURPOSE: To obtain a cellulose fiber product rich in edible fibers and not practically contg. nutritive substance or ash by carrying out delignification and bleaching with an alkali soln. of a peroxide under specified conditions. CONSTIT...
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JPH0217675B2 |
Process for the manufacture of CTMP pulps, in which a mechanical grinding of the lignocellulosic material is added to a cooking of the said material at a temperature equal to or higher than 100 DEG C, under saturated steam pressure, with...
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JPH0217677B2 |
The present invention relates to a method of intensifying the washing of a fiber suspension. In particular, the present invention relates to decreasing the lignin content of a fiber suspension by extracting. Lignin removal is usually car...
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JPH0215668B2 |
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JPH0215670B2 |
An improved high yield pulp, such as groundwood pulp, thermomechanical pulp, chemimechanical pulp and waste paper pulp having a widened field of use is produced by treating the raw material in a known manner, screening, thickening and bl...
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JPH0215669B2 |
A process of manufacturing cellulose pulp from wood by digesting the wood with sulphite cooking liquor containing additions of sulphide and in the presence of a quinone or hydroquinone compound. According to the invention, the mole ratio...
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JPH0299679A |
PURPOSE: To readily and correctly control the digestion of cellulose by analyzing a volatile acid generated in a delignification in digesting a cellulose-containing material and deciding a time required to attain a desired digesting degr...
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JPH0210275B2 |
A process for bleaching a lignocellulosic matter in the form of a mechanical, thermomechanical, chemicomechanical or chemicothermomechanical papermaking pulp, or of wood chips while being converted into one of these pulp types by process...
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JPH028074B2 |
A process is provided for reducing carbohydrate losses in the sulphate pulping of wood using sodium hydroxide and sodium sulfide, by pretreating the wood in the presence of water with oxygen gas and nitrogen oxide such as NO2 and/or NO a...
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JPH02474B2 |
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JPH0161096B2 |
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JPH0160111B2 |
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JPH0160015B2 |
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JPH01306692A |
PURPOSE: To provide the subject chaff usable as a paper-manufacturing material, plastic filler material, etc., by subjecting chaff to bleaching and scouring treatments. CONSTITUTION: As a scouring treatment, for example, 50-100g of chaff...
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JPH0156196B2 |
Apparatus for reacting lignocellulosic material with a gas phase comprising a nitrogen oxide and oxygen under controlled gas pressure in the presence of water, for example, as a pretreatment before an alkaline delignification, comprising...
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JPH01282393A |
PURPOSE: To make the cooking time to achieve a desired degree of delignification readily determinable by analyzing a monomeric compound produced by lignin degradation during the cooking. CONSTITUTION: A monomeric compound produced by lig...
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JPH01239183A |
PURPOSE: To precisely control the composition between conifer and hardwood so as for bleaching condition to be optimized by determining the composition proportions of a wood chip mix dispensed in alkaline delignifying processes through t...
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JPH01221586A |
PURPOSE: To obtain the subject pulp efficiently by treating a cellulose-containing raw material under heating with a specific cooking liquid, treating the cooked cellulosic raw material with a hot lower fatty acid in a water-containing s...
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JPH01192889A |
PURPOSE:To obtain incorruptible, pure white pulp, by boiling epidermis and bark parts in cortex of Japanese cedar, cypress and the like together to gather pulp of paper making material and simultaneously removing excessive starch from th...
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JPH0132215B2 |
The process of making a wet or dry dispersion containing anthraquinone suitable for use in the alkaline digestion of wood comprising cyclizing ortho-benzoylbenzoic acid at a temperature of about 150 DEG to 180 DEG C. and at an absolute p...
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JPH0129918B2 |
The present invention solves the problems encountered when charging oxygen (O2) to and removing inert gas from the reactor gas obtained in the activation of lignocellulosic material with gas that contains nitrogen dioxide (NO2) and subse...
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JPH01148889A |
PURPOSE: To provide an apparatus and method for reducing scale formation in pulping operations through such a process as to remove scale-forming constituents such as calcium carbonate included in a liquor and then feed a continuous diges...
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JPH01104891A |
PURPOSE: To provide a process for advantageously pulping a lignocellulose- containing material by using a pulping medium containing formic acid, and a specific alcohol and/or alkyl formate. CONSTITUTION: A lignocellulose-containing mater...
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JPH0197287A |
PURPOSE: To obtain a jute processed product making it possible to process jute in a large amount at a low cost and further enabling the utilization of the jute, which has been used only for packaging materials, for other uses, by hydroly...
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JPH0120276B2 |
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JPH0118200B2 |
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JPH0114355B2 |
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JPS6410634B2 |
A process for the delignification and bleaching of lignocellulosic pulp employing electronically excited oxygen generated in situ which comprises subjecting an aqueous slurry of said lignocellulosic pulp having a consistency of from abou...
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JPS6414200U |
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