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Patent Searching and Data


Matches 451 - 500 out of 689

Document Document Title
JP4366959B2  
JP4366960B2  
JP2009167554A
To produce pulp in high yield without using sodium sulfide and a high-temperature and high-pressure condition in comparison with a kraft method, and to recover lignin.The method for producing the pulp includes subjecting ligneous chip to...  
JP4292148B2
Chips which have not been based in steam are continuously added to and removed from an impregnation vessel (30) containing impregnation liquid zones (Z1-Z3) with different temperatures. The flow of impregnation liquid (BL1) in the upper ...  
JP4283981B2
Chemical pulp is produced from a slurry of comminuted cellulosic fibrous material using a beneficial additive such as AQ, or polysulfide. In the first treatment zone the effective alkali concentration and temperature conditions are such ...  
JP4280636B2
The method is for the manufacture of cooked cellulose pulp in which the starting material, preferably chips, undergoes a successive increase in temperature towards cooking temperature. This is done while the chips are first treated in a ...  
JP2009500537A
The present invention is a method for producing a pulp from a fibrous lignocellulose material or source using a treatment or pretreatment step which exposes the material to oxalic acid derivatives, particularly dialkyl ester derivatives,...  
JP4205855B2  
JP2008303502A
To provide a method for recycling wood waste resulting from demolishing houses or the like as a feedstock for paper manufacturing use by removing harmful organochlorine compounds contained in the wood waste to effect detoxifying the wast...  
JP4192565B2  
JP4192584B2  
JP4192566B2  
JP4192567B2  
JP4146108B2
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...  
JP4094665B2
Methods and apparatus are provided for the recovery of organic compounds from fibrous plant materials. Organic compounds which can be recovered from the fibrous plant materials include plant metabolites, such as arabinogalactan and pheno...  
JP4057514B2
The present invention relates to a biopulping method, and more particularly to a biopulping method for non-woody fiber plants. A biopulping method for a non-woody fiber plant is provided. It includes steps of providing a culture solution...  
JP4010134B2  
JP2007530818A
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 option...  
JP2007530707A
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...  
JP2007182637A
To improve a pulp yield, a cooking rate and pulp qualities in a process for subjecting wood chips of mixing system having different apparent density to kraft cooking.A permeablility improver is added to wood chips having <0.9 g/cm3 appar...  
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...  
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...  
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...  
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 ...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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...  
JP2003522844A
(57) Summary book invention relates to the removal method of the lignin from the material containing the lignocellulose characterized by processing the material containing lignocellulose by 脱 lignin gas (the gas contains a chlorine dio...  
JP2003522845A
(57) 脱 lignin gas containing the gas compound which includes the material in which summary book invention contains lignocellulose for at least one oxygen atom in front of the high yield pulping method, For example, it is related with t...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
JP2002517621A
(57) The improvement method which carries out 脱 lignin of the lignocellulose system material using a summary subject poly oxo meta-rate is offered. Solution means How to carry out 脱 lignin by exposing this material to a poly oxo meta...  
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...  
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...  

Matches 451 - 500 out of 689