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Matches 201 - 250 out of 689

Document Document Title
WO/2012/042497A1
The process is for pretreating a lignocellulosic biomass feedstock and comprises: soaking a lignocellulosic biomass feedstock wherein the soaked biomass is present as a mixture with a free liquid and wherein the free liquid comprises at ...  
WO/2012/026856A1
The invention concerns a method, system and a withdrawal screen section for the impregnation of chips during the manufacture of chemical pulp. Chips are both steamed and impregnated in a low pressure impregnation vessel 3, using pressuri...  
WO/2012/005643A1
The invention concerns a method, system and a withdrawal screen section for the impregnation of chips during the manufacture of chemical pulp. Chips are both steamed and impregnated in a low pressure impregnation vessel 3, using pressuri...  
WO/2011/150436A1
The present invention relates to a process for obtaining high-value products from lignocellulosic material, especially wood, comprising the steps of a) preliminary hydrolysis of the lignocellulosic material, b) removal of at least a port...  
WO/2011/142426A1
Disclosed is a method that is for producing a saccharification pre-processed material and that obtains a saccharification pre-processed material from which lignin has been sufficiently dissociated when preprocessing lignocellulose-based ...  
WO/2011/138634A1
A method for pulp processing used in connection with a pre-hydrolysis kraft process (PHKP) includes adding wood chips or similar material to a reaction vessel, performing pre-hydrolysis, and neutralizing the mixture with a first quantity...  
WO/2011/138633A1
A method for pulp processing includes a cold caustic extraction stage in which the spent cold caustic solution and the spent liquid used to wash the extracted pulp are concentrated by an evaporation system. The concentrated liquid can be...  
WO/2011/092378A1
The present solution is based on using one or more ligninolytic or pectinolytic enzymes or one or more enzymes having an otherwise decomposing effect on the structure of wood for preprocessing wood chips in an impregnating device (I2) fo...  
WO/2011/093424A1
Disclosed is a highly efficient process for producing a pulp. Specifically disclosed is a process for producing a pulp, comprising applying a shock wave to a cellulose material.  
WO/2011/088973A1
The invention relates to a method for producing wood pulp having an impregnation phase, a grinding phase (28) and a bleaching phase (14), in particular a peroxide bleaching phase. The invention is characterized in that an acid washing pr...  
WO/2011/071386A1
The invention is related to a method for processing biomass derived from plants or animals, comprising the steps of : a. pre treating said material with an aqueous solution of acid or base; b. subsequently passaging saturated or super he...  
WO/2011/069106A1
The present invention is a process for treating a feedstock comprising holocellulose. The process comprises mixing the feedstock with a solution comprising cellulose binding domains to form a mixture. The mixture is then subjected to con...  
WO/2011/063800A2
The invention relates to a method for producing refiner wood pulps, wherein the wood chips were irradiated with hydrogen sulfite and high-energy radiation after slight impregnation and then defibred by means of refiners. The wood-chip-ir...  
WO/2011/053203A1
The invention relates to a method and arrangement for steaming and impregnating wood chips in a single down flow vessel. A first upper volume of chips is established above a liquid level (LIQ_LEV) in the vessel, wherein steaming takes pl...  
WO/2011/035381A1
A method to produce a fibre product from a plant material comprising the steps of harvesting the plant material, size reduction of the plant material, subjecting the plant material to an extraction/diffusion step to separate the sugar co...  
WO/2011/028554A1
The present invention generally relates to processes for production of ethanol from cellulosic biomass. The present invention also relates to production of various co-products of preparation of ethanol from cellulosic biomass. The presen...  
WO/2011/021968A1
The invention relates to a method and arrangement for adding treatment liquor to comminuted cellulose material, preferably wood chips, during the manufacture of chemical pulp in a continuous process. Said process using a down flow vessel...  
WO/2011/007369A1
This specification describes a process to separate lignin from an aqueous mixture derived from a biomass feedstock, wherein the separation is done at or above critical temperature, usually above 60°C.  
WO/2011/006244A1
An apparatus for heating a cellulosic feedstock prior to hydrolysis is disclosed. The apparatus comprises a pressurizable treatment chamber, a mixing and conveyance member configured to deaggregate the cellulosic feedstock and mix the ce...  
WO/2010/147118A1
An apparatus and process for pulp production are provided with which a pulp can be produced in an environment having the atmospheric pressure and having a temperature lower than in the kraft process and the sulfite process. The apparatus...  
WO/2010/139589A1
The present invention relates to a process for preparing a high-yield pulp comprising a) treating a lignocellulose containing material chemically by means of an oxidising system comprising at least one non-enzymatic oxidant and an activa...  
WO/2010/104725A1
The invention provides a composition of matter and a method, which enhance the process of mechanically pulping paper precursors. The composition of matter includes a small quantity of a reducing agent and a source of alkali. When added t...  
WO/2010/095982A1
The invention concerns an arrangement and a method for the steam pre-treatment of chips during the production of cellulose pulp. With the aim of avoiding the blow-through of gases in the steam pre-treatment vessel (1) and in this way pre...  
WO/2010/081227A1
A process for the pretreatment of lignocellulosic biomass, in particular during the production of ethanol from biomass. The process including a cooking step where the biomass is exposed to steam at elevated temperatures and pressures for...  
WO/2010/080462A2
Biomass is pretreated using an organic solvent solution under alkaline conditions in the presence of elemental sulfur and optionally one or more alkylamine and/or one or more additional nucleophile to fragment and extract lignin. Pretrea...  
WO/2010/075405A1
A process is disclosed for preparing biomass particles for thermolytic or enzymatic conversion whereby the biomass particles having a moisture content of at least 20% are subjected to Hash healing. The flash heating may be preceded by on...  
WO/2010/069151A1
A multi-stage process for extracting cellulose from plant comprises the following steps: firstly impregnating the plant with dilute alkali; steaming under increased pressure and then beating and washing the pulp, and thus obtaining cellu...  
WO/2010/066026A1
Impregnating or spraying softwood chips in a solution containing an appropriate concentration of alkaline earth metal ions selected from the group consisting of calcium ions, barium ions and strontium, preferably calcium ions, at room te...  
WO/2010/053464A1
The invention relates to the cellulose paper industry. The method for producing a fibrous semifinished product from cellulose-containing materials consists in supplying starting raw material, conveying cooking liquor to the starting raw ...  
WO/2010/046532A1
The present invention relates to a process for the production of xylose and dissolving pulp from xylan-containing biomass, such as hardwood. The invention is based on prehydrolysis of the xylan-containing biomass with SO2 in specified co...  
WO/2009/140808A1
A process and system for pulping are provided, which are environmental protective, energy saving, circulating and green. The process comprises the following steps: cutting, dust exhausting, fibrillating, cooking and bleaching integration...  
WO/2009/136000A1
A process for the preparation of prehydrolyzed pulp in a digester from lignin-containing cellulosic material is disclosed. According to the present invention the cellulosic material is prehydrolyzed in a first steam phase at a first pres...  
WO/2009/134764A2
Methods of producing cellulosic or lignocellulosic materials for use in papermaking include treating a cellulosic or lignocellulosic dry feedstock having a first average molecular weight with ionizing radiation, and controlling the dose ...  
WO/2009/117402A2
Methods of pretreating comminuted cellulosic material with an acidic solution and then a carbonate-containing solution to produce a pretreated cellulosic material are provided. The pretreated material may then be further treated in a pul...  
WO/2009/105928A1
A process of joint production of fuel ethanol, electricity and paper pulp by fractionation conversion of Pennisetum purpureum Schum, which includes steam blasting the Pennisetum purpureum Schum segments with a steam blasting device, obta...  
WO/2009/108773A2
A system has been developed for pretreating cellulosic biomass feed stock including: a first pressurized reactor receiving the feed stock, wherein the feed stock undergoes hydrolysis in the first pressurized reactor; a sealing device hav...  
WO/2009/097878A1
The invention relates to an arrangement for adding, by means of at one feeding device (2, 3), at least one fluid into the flow of a pulp slurry (1) in a machine used for producing and/or refining a paper web, cardboard web, tissue web, o...  
WO/2009/097877A1
The invention relates to an arrangement and a method for diluting a pulp slurry (1) in a diluting device (11) and adding, by means of at least one respective feeding device (2, 3), several fluids into the flow of the pulp slurry (1) in a...  
WO/2009/094187A1
Isolated and/or purified polypeptides and nucleic acid sequences encoding polypeptides from Alicyclobacillus acidocaldarius and variations thereof are provided. Further provided are methods of at least partially degrading xylotriose and/...  
WO/2009/068525A1
The present invention relates to a method for utilizing a wood hydrolysate obtained from a hydrothermal treatment of a wood material method comprises the steps of providing a wood material, treating the wood material by means of an aqueo...  
WO/2008/138423A1
The invention relates to a method for reducing the heavy metal content of raw material containing lignocellulose prior to decomposition. The method is characterised in that the raw material is washed with an aqueous solution of a complex...  
WO/2008/138109A1
Using site-directed mutagenesis to mutate the Xanthomonas campestris pectate lyase gene, variants of Xanthomonas campestris pectate lyase with improved thermostability and/or enzymatic activity have been expressed in Escherichia coli, an...  
WO/2008/088077A1
The object is to produce a pulp without employing sodium sulfide or high temperature/high pressure conditions and with higher yield compared to a Kraft method and to collect lignin. A pulp is produced by hydrophilizing a wood chip with a...  
WO/2008/074220A1
A preparation method of a bamboo pulp comprises the steps of preparing material, cooking and bleaching. In the step of preparing material, bamboo material is obliquely cut at the angle of 10-85ºinto bamboo chip with a chip cross-section...  
WO/2008/048426A2
A method of producing a modified pulp comprising treating wood chips in an extraction process to remove hemicellose to form treated wood chips; and subjecting said treated wood chips to chemical or semichemical pulping to form a modified...  
WO/2008/026932A1
It is described a method for thermal enzymatic hydrolysis of ligno cellulose, which method comprises the following steps: lead a raw material based on ligno cellulose (1), pH-adjusting and other additives (19) and possibly thinner liquid...  
WO/2008/028183A1
The present invention provides a method for producing an MDF board from pulp from a fibrous lignocellulose material using a treatment or pretreatment step which exposes the material to oxalic acid or oxalic acid derivatives (particularly...  
WO/2007/090926A1
An improved method for treating lignocellulosic material, including a prehydrolysis-mass transfer process, which produces a concentrated hydrolysate volume during the time required for the hydrolysis itself. The improved process comprise...  
WO/2007/090925A1
An improved method for treating lignocellulosic material, including a prehydrolysis-mass transfer process, which produces a concentrated hydrolysate volume following steam hydrolysis. The improved process comprises the heating of the dig...  
WO/2007/073333A1
The invention concerns a system and a method for the generation of steam in a digester plant for the production of chemical cellulose pulp. The pressure of hot, pressurised black liquor from a digester (4) is reduced in a first step (11 ...  

Matches 201 - 250 out of 689