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Matches 51 - 100 out of 689

Document Document Title
WO/2020/070389A1
The invention relates to a method for feeding a slurry of chips and liquid to a prehydrolysis reactor in the production of dissolving pulp. The slurry is pumped by using at least one pump to the reactor, and alkali is fed into the at lea...  
WO/2020/040677A1
According to the present invention, there is provided a treatment process system for biomass material and methods for such system. The system comprises a first dewatering stage arranged to receive biomass material, to remove liquid from ...  
WO/2020/034395A1
On the basis of existing problems in the prior art in the pretreatment of lignocellulose, the present invention provides a method suitable for pretreating lignocellulosic biomass, suitable for producing fermentable sugars by saccharifyin...  
WO/2020/005130A1
A method for continuous steam explosion discharge of a pressurised reactor for thermal treatment of lignocellulose biomasses. The steam explosion discharge is complete decoupled from the thermal treatment step and the loss of steam from ...  
WO/2019/226087A1
A system for treatment of a biomass material, said system comprising:a first vessel (3) in which said biomass material is treated under a first pressure; a second vessel (5) in which said biomass material is received and held at a second...  
WO/2019/212396A1
A system for treatment of a biomass material and a method for transporting biomass material, said system comprising: - a first vessel (3) in which said biomass material is treated at a first pressure; - a second vessel (5) in which said ...  
WO/2019/209153A1
A reactor vessel (1) for biomass material, wherein said reactor vessel (1) is a pressurized reactor vessel, said reactor vessel being elongated and comprising: a substantially tubular vessel part (3); two gables (5a, 5b) connected one to...  
WO/2019/196165A1
Disclosed is a method for continuously separating a lignocellulose component, the method comprising the following steps: chopping straw, washing same with water, conveying lignocellulose into a twin-screw extruder (4), introducing an alk...  
WO/2019/170962A1
The present invention relates to a process for producing dissolving pulp from comminuted wood-based fibrous material. The process comprises the following consecutive stages: cooking comminuted fibrous material with alkaline cooking liquo...  
WO/2019/165324A1
This disclosure relates to methods of making novel dissolving wood pulps by processes comprising acid prehydrolysis, pulping, and a multi-stage bleaching process comprising oxidation with a catalyst and peroxide under acidic conditions, ...  
WO/2019/109133A1
A method for producing a microbial cellulose pulp for the production of viscose dope, the method comprising the step of: exposing a microbial cellulose to a volume of water to form the microbial cellulose pulp for the production of visco...  
WO/2019/103674A1
According to the present invention, there is provided a cleaning system for biomass material handling systems and methods for such system.The cleaning system for a biomass material treatment stage in a continuous process system includes ...  
WO/2019/090413A1
A process for converting lignocellulosic biomass to glucose or ethanol includes subjecting the lignocellulosic biomass to a SO2 pretreatment within the temperature range 110°C-150°C. Good glucose yields have been achieved when the SO2 ...  
WO/2019/088906A1
A reactor arrangement for pre-hydrolysis of biomass material. The reactor arrangement comprises a reactor vessel arranged substantially horizontally, wherein the vessel comprises an inlet for receiving the biomass material arranged at an...  
WO/2019/083427A1
The invention relates to a feeding arrangement (1) for feeding comminuted biomass material through a treatment stage (200), which feeding arrangement comprises a screw feeder (10), which comprises an inlet (12) and an outlet (13), and a ...  
WO/2019/059835A1
A process of treating wood chips for reduction of the content of undesirable inorganic elements prior to cooking in a production line for chemical pulp, wherein the chips are (I) squeezed at atmospheric pressure by volumetric compression...  
WO/2019/039982A1
The invention relates to a prehydrolysis-kraft process where the hydrolysate is withdrawn in a position where withdrawal capacity may be obtained over a longer operational period. According to the inventive process is the first volume of...  
WO/2019/018922A1
A method and system to produce treated Cellulose Filaments (CF) and CF products are provided. Feedstock comprising CF in a water solution are mixed with a debonder to produce a mixed stream. The mixed stream is filtered yielding separate...  
WO/2019/009792A1
The invention relates to a method for inhibiting build-up of deposits of sticky reaction products on the interior reactor surfaces in an acidic prehydrolysis zone of continuous vertical reactor vessels or digesters and a reactor design t...  
WO/2019/004894A1
The invention relates to a method for extraction of saccharides from a lignocellulosic material and comprises the steps of mixing the lignocellulosicmaterial with afluid; dewatering the mixture of lignocellulosic material and fluid; and ...  
WO/2018/211175A1
The present invention relates to a method of producing chemical pulp. The method comprises at least the following steps: a) wood chips or other comminuted lignocellulosic fibrous material is treated with a polysulfide-containing cooking ...  
WO/2018/202673A1
The invention relates to a method for treating biomass(2). Biomass (2) is fed to a pressurized prehydrolysis reactor unit (8) by means of a feeding system (5, 7), wherein by means of the feeding system (5, 7) the biomass (2) is compresse...  
WO/2018/147784A1
The invention relates generally to a system and a method for the removal of silica contaminants from wood chips in a prehydrolysis kraft cooking pulp production process, and in particular to a system and a method in which silica is remov...  
WO/2018/114905A1
The invention relates to a two-stage digestion method for chemical fractionation of lignocellulose. In a first stage, the lignocellulose is pre-treated with water vapor or water at temperatures above 100 °C and increased pressures. In a...  
WO/2018/115290A1
The present invention relates to a method for manufacturing dissolving pulp using wood material, the method comprising the steps of; subjecting the wood material to a hydrothermal treatment using steam and/or water, a) digesting the wood...  
WO/2018/104490A1
The invention relates to a method for treating biomass (2). In a step (S10), biomass (2) and an impregnation liquid are fed into a first reactor unit (10) such that the biomass (2) is impregnated with the impregnation liquid while the bi...  
WO/2018/104484A1
The invention relates to a method for treating biomass (1). In a step (S10) of the method, the biomass (1) and an amount of water (2) is fed into a first reactor unit (10) such that the biomass (1) is impregnated using the amount of wate...  
WO/2018/104489A1
The invention relates to a method for impregnating biomass (10). In a step (S100) of the method, a reactor unit (11) is fed with biomass (10) by means of a plug screw (12). In another step (S200), the reactor unit (11) is at least partia...  
WO/2018/104485A1
The invention relates to a method for treating biomass. In a first step (S10), the biomass (10) and a treatment medium (11) are fed into a treatment unit (12) such that the treatment medium (11) interacts with the biomass (10) in order t...  
WO/2018/096181A1
The present invention relates to methods of processing compositions comprising a lignosulfonate and a carbohydrate, methods of preparing a carbohydrate-enriched composition involving the above processing method, associated carbohydrate-e...  
WO/2018/087658A1
The invention relates to the chemical industry, and more particularly to technology for producing purified cellulose from flax fibre. The essence of the invention is that during the purification of flax fibres using a chemical method, li...  
WO/2018/069168A1
The invention relates to a method for extracting cellulose, hemicellulose and lignin from lignocellulose. Said method can be carried out in an environmentally friendly manner when it comprises the following steps: step a) lignocellulose ...  
WO/2018/038672A1
The present invention relates to a method of preparing grafted copolymers of lignin and/or cellulose, comprising the generation of macroradicals in situ by mechanical impact on the backbone of said lignin and/or cellulose of said lignin ...  
WO/2017/221055A1
The present invention relates to the production of cellulose from coffee husks or cocoa shells. The cellulose extracted can be used to produce paper, card stock and cardboard. In addition, a composite material also comprising a material ...  
WO/2017/215877A1
The invention relates to a method for producing a fibrous material from lignocellulose from wood, preferably in the form of wood chips. The lignocellulose material is impregnated with a mixture of sodium sulfite and sodium bisulfite and ...  
WO/2017/207872A1
The present invention relates to a novel process of splitting cellulosic material using an electromagnetic radiation and a process of producing ethanol from cellulosic material. The invention provides a cost effective and environmentally...  
WO/2017/203329A1
The present invention discloses a cooking method and a digester system wherein partly digested cellulosic fiber source is compressed during cooking to provide high molecular weight lignin and pulp.  
WO/2017/204736A1
The invention relates to a method and an impregnation vessel where the bulk volume of impregnation liquor added is in form of hot black liquor having a residual alkali content. Hot black liquor is added in an upper central pipe supplying...  
WO/2017/200470A1
The invention relates to an improved method for generating clean steam in a digester plant of a chemical pulp mill. By feeding a steam-to-steam converter (SSC) with venting steam from a black liquor flash tank (FT) as well as venting ste...  
WO/2017/192476A1
The present invention provides a pulp product (e.g., paper) comprising cellulose and nanocellulose, wherein the nanocellulose is derived from the cellulose in a mechanical and/or chemical step that is separate from the main pulping proce...  
WO/2017/182713A1
The present invention relates to a method and an arrangement for generating process steam at a chemical pulp mill. In the method is heated by subjecting it to an indirect heat exchange contact with steam in a heat exchanger. The water is...  
WO/2017/166854A1
A method for making a corrugated medium using brownstock pulp of straw, comprising: (I) beating brownstock pulp of straw, the freeness being controlled within 28-32 °SR, the wet weight being 3.2-3.8 g; (II) beating waste paper pulp, the...  
WO/2017/166857A1
A method for manufacturing degradable paper mulches using cotton stalks, comprising the following steps: (1) cutting cotton stalks into segments; (2) conveying the segments into a steaming bin for pre-steaming, and then conveying same to...  
WO/2017/166860A1
Method for producing brownstock pulp using straws, comprising the following steps: (1) cutting straws into segments; (2) conveying the segments into a steaming bin for pre-steaming, and then conveying same to a continuous digester for co...  
WO/2017/142445A1
A method for obtaining a strong hydrolysate from cellulose material after a hydrolysis in a batch digester. According to the invention is the cellulose material exposed to a 2-stage hydrolysis with a first steam phase hydrolysis followed...  
WO/2017/127004A1
The present invention relates to an improved process for producing dissolving pulp from a hydrolysis-kraft cooking process. The new process make it possible to control pulp viscosity in an efficient way by adding hydrogen peroxide to a f...  
WO/2017/109468A1
A process is provided for preparing a low density, fibrous primary lignocellulose biomass, particularly straw for anaerobic digestion at large scale, i.e. >2 MWth, which comprises a step that greatly increasing the density of the straw t...  
WO/2017/112834A1
A method of producing chemical cellulose pulp from sawdust utilizing a static down-flow retention vessel comprising the steps of continuously pressurizing a flow of sawdust using a progressive cavity pump to produce a pressurized sawdust...  
WO/2017/100907A1
A process for producing alcohol from lignocellulosic biomass includes adding at least one of sulfur dioxide and sulfurous acid to the lignocellulosic biomass to provide an effective sulfur dioxide dosage and/or effective sulfur dioxide s...  
WO/2017/102330A1
The steam saving device for a steam explosion system for the hydrothermal pretreatment of biomass comprises a tubular body (30) with a first open end (32) and a second open end (34). The first open end (32) being adapted to be coupled to...  

Matches 51 - 100 out of 689