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WO/2010/137535A1 |
A method for digesting a lignocellulosic material is provided with which the yield of pulp at the same Kappa number is improved and the proportion of effective alkalis to be added at the same Kappa number is reduced. The method is a cont...
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WO/2010/135594A1 |
A system and method for digesting cellulosic material to extract fermentable sugars, lignin, and pulp is disclosed. One embodiment comprises a continuous digester comprising a cellulosic material feed section including a pre-steam and im...
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WO/2010/115488A1 |
The invention relates to a method for obtaining cellulose by separating lignin from a biomass comprising lignocellulose in the form of plants or plant parts, wherein the biomass comprising lignocellulose is solubilized in a boiler in an ...
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WO/2010/114470A1 |
The invention concerns a system and a method for the regulation of a continuous vapour phase digester (50). The relevant process inflows (CH, ST, WL, DL) are regulated with a process regulator (PC) depending on current process outflows (...
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WO/2010/110724A1 |
The invention concerns a method and an arrangement for wash after completed digestion in a continuous digester (1) for the production of cellulose pulp. Digested softened chips that have not been defibrated are fed out from the bottom pl...
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WO/2010/106077A1 |
A method for inhibiting the formation, deposition and adherence of calcium salt scale to metallic and other surfaces in the equipment, vessels and/or piping of a chemical pulp process facility comprising adding an effective scale inhibit...
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WO/2010/102480A1 |
A process of dispersing the mixture of natural higher fatty alcohol and synthetic higher aliphatic alcohol into water, which is in the technical field of fine chemical industry. The emulsion mixture of natural higher fatty alcohol and sy...
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WO/2010/093812A2 |
A method for mitigating the costs of establishing a biomass-based pellet manufacturing plant includes identifying an existing pulp processing plant, obtaining permission to access and convert the pulp processing plant, and converting the...
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WO/2010/093220A2 |
A method for manufacturing tissue using recovered paper from corrugated fiberboard as raw material is provided. A method for manufacturing tissue using disclosed recovered paper from corrugated fiberboard as raw material comprises: (a) a...
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WO/2010/083601A1 |
A method and apparatus for conveying a cellulosic feedstock are disclosed. The apparatus, such as a holding tank, has a passage. At the outlet to the passage, a conveyance member is provided to convey the cellulosic feedstock laterally a...
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WO/2010/083600A1 |
A method and apparatus for preparing a cellulosic feedstock are disclosed. Embodiments of the method comprise passing the cellulosic feedstock out of at least one outlet of a vessel (such as a holding tank) and obtaining at least two str...
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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...
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WO/2010/080464A1 |
Biomass is pretreated using an organic solvent solution under alkaline conditions in the presence of ammonia and optionally an additional nucleophile to fragment and extract lignin without loss of hemicellulose. Pretreated biomass is fur...
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WO/2010/080461A1 |
Biomass is pretreated using an organic solvent solution under alkaline conditions in the presence of one of more sulfide (hydrosulfide) salt and optionally one or more additional nucleophile to fragment and extract lignin. Pretreated bio...
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WO/2010/080460A1 |
Biomass is pretreated using an organic solvent solution, under alkaline conditions, in the presence of one or more organo-mercaptan and optionally one or more additional nucleophile to fragment and extract lignin. Pretreated biomass is f...
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WO/2010/080489A1 |
Methods for treating lignocellulosic biomass to produce readily saccharifiable carbohydrate-enriched biomass are provided. In one method, lignocellulosic biomass comprising lignin is treated with aqueous ammonia, then contacted with a ga...
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WO/2010/080434A1 |
Biomass is pretreated using an organic solvent solution under alkaline conditions in the presence of one or more alkylamine and optionally one or more additional nucleophile to fragment and extract lignin. Pretreated biomass is further h...
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WO/2010/080436A1 |
Lignocellulosic biomass comprising lignin is treated by selective extraction and oxidation of lignin using a solvent solution comprising water in combination with at least one Mn(III) salt to produce readily saccharifiable carbohydrate e...
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WO/2010/071945A1 |
Fibre furnish for use in the manufacture of paper and paper-based products, the fibre furnish consisting essentially of plant petiole tissue, wherein substantially longitudinally aligned petiole fibres have been cut generally laterally t...
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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...
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WO/2010/066195A1 |
A raw paper prepared by a mixed pulp including straw pulp, which can be used to prepare textbooks, writing papers and office paper with good performance, and the producing method of said raw paper are provided. The weight proportion of t...
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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...
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WO/2010/058185A1 |
There is described a method of processing biomass which comprises the digestion of biomass material in an aqueous solvent system subjected to ultrasonic waves and separating the biomass into its constituents of lignin, hemicellulose and ...
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WO/2010/059796A2 |
Concentrated sugar solutions obtained from polysaccharide enriched biomass by contacting biomass with water and at least one nucleophilic base to produce a polysaccharide enriched biomass comprising a solid fraction and a liquid fraction...
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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 ...
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WO/2010/046051A2 |
A process for the production of lipids from biomass including at least one polysaccharide comprising: subjecting said biomass to acid hydrolysis in the presence of an aqueous solution of at least one organic acid selected from alkyl- or ...
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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...
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WO/2010/044732A1 |
The invention concerns a method for influencing the flow from a strainer construction in a continuous digester. In order to avoid clogging of the withdrawal compartment (10a) in the strainer construction, an additive (Ch) that counteract...
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WO/2010/034055A1 |
The invention relates to methods for the fractionation of lignocellulosic matter. More specifically, the invention relates to methods for separating sugar-containing components of lignocellulosic matter from lignin.
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WO/2010/024763A1 |
In a continuous digester system the digester system is greatly simplified by using a single vertical atmospheric vessel, replacing the conventional chip bin, steaming vessel, chip chute, high pressure pumping or sluice feeders, impregnat...
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WO/2010/006840A2 |
The invention proposes a method for pretreating plant starting material for the purpose of producing bioethanol and/or sugar by means of a common chamber (12), characterized in that: -during one period, the plant material (MP), introduce...
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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...
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WO/2009/134746A1 |
Carbohydrates having functional groups, such as carboxylic acid groups and methods of making such carbohydrates.
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WO/2009/124072A1 |
The inventive process converts cellulosic biomass into a gel-like state that is readily hydrolyzed by appropriate enzymes. First the biomass is mechanically reduced in size. The biomass is then mixed and kneaded with an aqueous solution ...
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WO/2009/120141A1 |
The invention concerns a pressurized digester vessel for a continuous digester, where the different parts Z1, Z2, Z3 of the digester are dimensioned according to the local temperature loads that are established in the different zones. It...
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WO/2009/116943A1 |
The invention relates to a feed system for a continuous digester (6) where at least 2 pumps (12a, 12b) are arranged in parallel in the bottom of a pre-treatment vessel (3), whereby the outlets from the pumps are combined at at least one ...
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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...
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WO/2009/116946A1 |
The invention relates to a feed system for a continuous digester where at least 2 pumps are arranged in parallel in the bottom of a pre-treatment vessel and where the transfer to the top of the digester takes place without a conventional...
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WO/2009/116940A1 |
The invention relates to a feed system for a continuous digester where at least 2 pumps are arranged in parallel in the bottom of a pre-treatment vessel and a liquid level of at least meters is established. The invention makes it possibl...
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WO/2009/116941A1 |
The invention relates to a feed system for a continuous digester (6) where at least 2 pumps (12a, 12b) are arranged in parallel in the bottom of a pre- treatment vessel (3) and a stirrer (1) is provided in direct connection to the inlets...
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WO/2009/116942A1 |
The invention relates to a feed system for a continuous digester where at least 2 pumps are arranged in parallel in the bottom of a pre-treatment vessel, each pump having its own independent transfer line leading to the top of the digest...
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WO/2009/114843A1 |
Embodiments of the present invention overcome the well-known recalcitrance of lignocellulosic biomass in an economically viable manner. A process and a system are provided for the efficient fractionation of lignocellulosic biomass into c...
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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...
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WO/2009/092749A1 |
The invention provides a process for pretreating a lignocellulosic plant raw material in order to obtain a pretreated material that is capable of being hydrolyzed and fermented for the production of bioethanol, characterized in that it c...
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WO/2009/090150A1 |
The invention relates to a composition comprising a mixture of a silica compound and an alkaline earth metal oxide or alkaline earth metal hydroxide in an aqueous solvent, characterised in that the silica compound and the alkaline earth ...
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WO/2009/089439A1 |
The invention relates to processes of delignifying lignocellulose-containing material, wherein the lignocellulose-containing material is treated with a delignification catalyst and a lignin solubilizing agent.
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WO/2009/028969A9 |
Lignin polymers having distinctive properties, including a generally high molecular weight and generally homogeneous size distribution, as well as preservation of native reactive side groups, are isolated by solvent extraction of plant m...
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WO/2009/083652A2 |
A method of delignifying a lignocellulosic raw-material, which contains lignin with a benzylic ring structure. The method comprises carboxylating at least a part of the benzylic ring structure by contacting the raw material at anhydrous ...
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WO/2009/082338A1 |
The invention relates to an improved method to increase the yield and improve the beatability of kraft pulp, wherein, during the progression of the cooking process, and at different time points, more than one cooking liquor with a dissol...
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WO/2009/070955A1 |
Provided is an unbleached paper product made from grass type pulp, the unbleached paper product has a brightness of 35-60%ISO, the grass type pulp is unbleached. The unbleached paper product includes an unbleached toilet paper, an unblea...
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