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Patent Searching and Data


Matches 301 - 350 out of 1,000

Document Document Title
WO/2005/103371
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/2005/103370
A method for processing wood chips involves using a combined fungus/enzyme process in which the enzymes are produced in situ. In a first step (300), wood chips are biopulped by treated them with a lignin-degrading fungus. Next (310), the...  
WO/2005/075730
The object of the invention is to reduce foaming of black liquor. It is based on observation about the effect of colloidal neutral substances on the separation of soap. According to the method foaming of the black liquor is reduced by ad...  
WO/2005/064075
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/2005/064076
The present invention discloses a closed cycle zero discharge oxidizing pulping process. The process includes: (i)forming active oxygen free radicals via an electron reduction reaction with molecular oxygens in an ionic reaction unit ; (...  
WO/2005/064077
The present invention discloses a closed cycle zero discharge bio-oxidizing pulping process. The process includes: (i) forming active oxygen free radicals via an electron reduction reaction with molecular oxygens in an ionic reaction uni...  
WO/2005/064078
The invention concerns an improved method to sluice chips from a low-pressure section to a high-pressure section with a sluice feeder 53' (a high-pressure feeder). The fluid that is used to expel the chips from the sluice feeder 53' prin...  
WO/2005/052247
The present invention relates to a catalyzer for clean pulping and process for using the same. The composition of the catalyzer for clean pulping according to the present invention includes sodium salicylate, anion silicic acid softener,...  
WO/2005/045126
A method is provided for treating black liquor particularly derived from nonwood pulp, by heating with an alkaline earth metal oxide in a toroidal fluidised bed reactor (304) at a temperature of above 650°C. The method may be used alone...  
WO/2005/019526
A system for controlling a processor having at least one sampling port connected to a stage of the processor in order to sample a reactant product from the processor. The system includes a controller configured to control a processing pa...  
WO/2005/017001
The invention relates to a method for dissolving wood, straw and other natural lignocellulosic materials in an ionic liquid solvent under microwave irradiation and/or under pressure. The invention also relates to the resulting solution a...  
WO/2005/017252
A method for the treatment of a lignin-containing material such as wood pulp, bagasse and other plant-derived materials, comprising contacting the lignin-containing material with an ionic liquid to extract the lignin therefrom. The ionic...  
WO/2005/001195
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/2004/106624
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/2004/104293
The invention relates to a method for delignifying lignocellulose raw materials, using sulphites in the presence of an alkaline constituent, especially sodium hydroxide or sodium carbonate or a mixture thereof, in an aqueous solution, at...  
WO/2004/094624
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/2004/090225
A method for washing sulphate cellulose pulp in the washing department of a sulphate cellulose mill, in which method a first pulp flow (1) is conducted to a first washer (101), where a washing liquid (12) is combined with the first pulp ...  
WO/2004/085735
Methods for bleaching cellulosic material such as cotton and wood pulp involve contacting the cellulosic material with a peroxide, oxygen or ozone bleaching agent, in the presence of a substituted guanadine-based additive. The substitute...  
WO/2004/078312
Block copolymers having two blocks and having the general formula (III) : R13[(OR14)j (OR 16)l OR 17]m wherein R13 is the residue of an organic initiator; R14 is one or more C2-C4 alkylene groups; R16 is one or more C2-C4 alkylene groups...  
WO/2004/061224
A paper pulp is produced from a non-woodlike lignocellulose-containing biomass and has the following characteristics: the proportion of holocellulose is greater than 90 percent by mass with regard to the dry mass of the paper pulp; the p...  
WO/2004/057101
The present invention relates to a wood cooking aid which comprises a mixture of fatty acids and rosin acids and/or salts thereof in a ratio which is effective in removing the extractives in pulp production. The invention also relates to...  
WO/2004/044285
The present Invention comprises an improved method for refining cellulose that produces a highly refined cellulosic material. The method comprises soaking raw material from primarily parenchymal cell wall structures in an aqueous solutio...  
WO/2004/041995
According to one embodiment of the invention, a system (100) for processing biomass includes a water-impermeable bottom liner, a gravel layer (104) supported by the bottom liner (102), a drain pipe (106) disposed within the gravel layer ...  
WO/2004/029356
The present invention provides a method for obtaining a low molecular black liquor fraction comprising the following steps:a) separating black liquor into two fractions by using separation means with a cut off of approximately 100 kDa or...  
WO/2004/025020
The present invention relates to a new and environmentally sound process for the manufacturing of a chemical pulp from lignocellulosic material with an integrated recovery system for recovery of pulping chemicals. The process is carried ...  
WO/2004/016850
This invention relates to a novel on-line pulp digester control system. More particularly, this invention pertains to a novel control system which employs real time measurements from ion mobility spectrometry to automatically rapidly and...  
WO/2004/015195
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/2004/007834
The invention relates to a continuous method for cooking cellulose-based pulp and to a pulp digester suitable for the method. In continuously operating cooking, the fi­brous pulp moves downwards in a vertical cooking vessel (1), whose u...  
WO/2004/005608
A method and apparatus for solvent pulping of cellulose containing biomass, comprising: a) at least one atmospheric steaming vessel (22) having a first outlet, b) at least one super-atmospheric impregnation vessel (28) operatively connec...  
WO/2004/005609
The invention concerns a method for the continuous cooking of pulp and a digester. At least two withdrawal positions (11E, 11D) for cooking fluid are arranged at different heights in the digester (10). The cooking fluid in the first and ...  
WO/2003/106765
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/2003/102296
The invention concerns a method for the production of cellulose pulp, in which wood raw material that principally comprises softwood, preferably in the form of cut wood chips, is treated in several stages in various treatment steps, wher...  
WO/2003/100166
Methods are provided for determining the yield and/or hygroscopicity of a pulp from the dimensions of fibers obtained from a sample of the pulp. The yield and/or hygroscopicity of softwoods and hardwoods may be calculated using the metho...  
WO/2003/097931
The invention concerns a simplified method for the continuous cooking of wood raw material in the form of sawdust for the production of cellulose pulp, in which method no thickening stages are required, and which can be carried out with ...  
WO/2003/095737
A method of producing a high quality paper pulp slurry from high silica content agricultural waste material. The method includes combining the agricultural waste materials with a chemical composition to form a mixture, cooking (21) the m...  
WO/2003/080924
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/2003/078727
A method for feeding a chips slurry from a low- to a high-pressure system during the continuous cooking of chemical cellulose pulp. The feed takes place through a sluice feeder (53') between these systems. The sluice feeder is provided w...  
WO/2003/074781
The invention relates to a process for producing furfural, for forming formic and acetic acids and for recovering formic and acetic acids in a pulp making process, in which an acid mixture containing mainly formic and acetic acids is use...  
WO/2003/062524
The invention concerns a method during the cooking of cellulose pulp in which the raw material, preferably in the form of chips, undergoes a successive elevation of temperature towards the cooking temperature while the chips are first im...  
WO/2003/062525
A method for the continuous cooking of chemical pulp with the aim of achieving improved heat economy in a digester system comprising a vessel (1) for impregnation and a vessel (2) for cooking the impregnated cellulose chips. A part of th...  
WO/2003/060229
Process for continuously cooking chemical pulp in a digester system consisting of at least one vessel for impregnating and cooking comprising an inlet into which a mixture of chips and process liquid is fed. The chips are impregnated at ...  
WO/2003/057980
Methods of converting a sulfide in a composition to polysulfide are described, one method comprising the steps of exposing the composition to conditions and for a time sufficient to cause conversation of at least a portion of the sulfide...  
WO/2003/057979
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...  
WO/2003/048454
Enzyme−treated papermaking sludges are provided, as are methods of making the enzyme−treated sludge. Papermaking processes that incorporate the enzyme−treated papermaking sludges into papermaking pulp are also provided as are paper...  
WO/2003/025280
The invention relates to a method for separating hemicelluloses out of biomass that contains hemicelluloses, particularly out of wood, and for extracting pulp. The method involves the following steps: (1) delignifying the biomass that co...  
WO/2003/023043
New mediators for use in laccase-mediator systems (LMS) are disclosed. The mediators enhance the activity of enzymes exhibiting laccase activity and can be used, for example, to bleach a dye in solution, to oxidize an appropriate compoun...  
WO/2003/008703
A process for applying chemicals, such as an alkaline peroxide pretreatment (1) to lignocellulosic material before chemical refining and at the primary refiner (3). The preferred embodiment comprises (i) preconditioning at temperatures b...  
WO/2003/006737
The invention relates to a process for producing pulp from a fibre-based raw material using, as the cooking reagent, a solvent mixture which is based on organic acids and also contains furfural. The method is applicable to herbaceous pla...  
WO/2003/004765
According to the invention, the cellulose pulps for paper industry are made from stems of a plant of specie Sida hermaphrodita Rusby that is free from resins and fatty acids. This kind of raw material is very easy to obtain and is charac...  
WO/2003/002813
The invention relates to a method for delignifying lignocellulosic raw materials by using sulfites in the presence of an alkaline component, especially sodium hydroxide or sodium carbonate or a mixture thereof in an aqueous solution at a...  

Matches 301 - 350 out of 1,000