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Matches 1 - 50 out of 990

Document Document Title
WO/2021/024025A1
An embodiment of the current invention provides a hopper for preparing empty fruit bunch (EFB) fibers in a paper and/or pulp production process. The hopper comprises an inlet, one or more pipes comprising holes and an outlet. The inlet o...  
WO/2020/234511A1
The invention enables determining the reduction rate of a recovery boiler using optical information from a chemical smelt sample. A processor is used to read a digital frame at least part of which represents the chemical smelt sample of ...  
WO/2020/209771A1
The invention relates to a discharge screw assembly (12) for discharging treated biomass material (A) received from a reactor vessel (2; 102), which discharge screw assembly comprises an inner space (23) that extends along a longitudinal...  
WO/2020/204783A1
A method and a hydrolysate extracting arrangement in a continuous cooking process for producing pulp, said method comprising the steps of: (e)cooling a content in a prehydrolysis vessel (5a; 5b; 5c; 5d) of a continuous pulp production sy...  
WO/2020/157055A1
A process for the conversion of a particulate solid material comprising hemicellulose, cellulose and lignin, said process being conducted in at least one reactor comprising said particulate solid material and interstitial space. The proc...  
WO/2020/104730A1
An arrangement for installations of monitoring sensors of a vessel 1 for treatment of lignocellulosic material, which vessel (1) has a central pipe (2) comprising at least one concentric pipe (3), which is mounted coaxially within the ve...  
WO/2020/091659A1
The present invention relates to an outlet system for transporting comminuted lignocellulosic material from a vessel, said bottom portion (1) having an upper circumference (15) that is essentially circular and a lower circumference (16) ...  
WO/2020/091675A1
The invention relates to a discharge screw arrangement (12) for discharging lignocellulosic material (7) from a lignocellulosic treatment reactor (1) and comprises a discharge screw (10), a feeder pipe (11) and a blow pipe (5), the disch...  
WO/2020/071979A1
A system for feeding lignocellulosic biomass material, comprising a pre- compressing stage for receiving biomass material and pre-compressing the material at a first pressure and a first compression ratio. A plug screw feeder receives th...  
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/2020/050757A1
A feeding arrangement comprising a transportation means (3) for transportation of material from a material supply to at least a first chute (7) and a second chute (8), a plug screw feeder (11) for feeding the material to the treatment st...  
WO/2020/046186A1
Disclosed is a screw feeder (10) comprising a pipe (3) enclosing a feed screw 4 arranged on a rotatory shaft (5) running parallel with the length direction of the pipe (3), said pipe (3) further comprising a number of dewatering holes (6...  
WO/2020/009634A1
The invention relates to a system and a method for feeding comminuted cellulosic material from a low-pressure zone (PL) to a high-pressure zone (PE) with at least 1 bar higher pressure. The invention uses a screw7 feeder having a feeding...  
WO/2020/005131A1
The present invention relates to a knot re-cooking arrangement for batch cooking of pulp, comprising: a batch digester (4) for cooking wood chips in a Kraft process to produce pulp, a knot removal device for removing knots (10) from pulp...  
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/2019/238783A1
In a process for isolating lignin from an alkaline process stream, especially thickened black liquor, the alkaline process stream is introduced continuously into a lower region of at least one circulation reactor (1) having two reactor z...  
WO/2019/227285A1
Provided are compositions and processes concerning efficient downstream processing of products derived from organic acids pretreatment of plant materials.  
WO/2019/194378A1
The present invention provides a method for manufacturing a nanocellulose fiber by using an eco-friendly process, comprising the steps of: (step 1) manufacturing pulp from wood or non-wood, which is a material; (step 2) irradiating, with...  
WO/2019/190375A1
The present invention relates to a diverter for a feed-out arrangement for a pulp treatment vessel such as a digester or an impregnation vessel, wherein the diverter comprises a body having an upper end and a lower end, the lower end hav...  
WO/2019/177508A1
The present invention relates to an arrangement for transferring pulp from one process stage to a subsequent process stage, the arrangement comprising a receiving portion for receiving pulp at a first dry solids content and a first press...  
WO/2019/177509A1
The present invention relates to an arrangement for withdrawing treatment liquors from a treatment vessel in a continuous treatment vessel system, said treatment vessel comprising a chamber wall of a treatment chamber, wherein the arrang...  
WO/2019/156831A1
The present disclosure relates, according to disclosed embodiments, to a system for extracting an organic compound from a natural source, the system comprising a computer processor operational to control the system; a storage vessel conf...  
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/2018/222632A1
A method of pulping wastepaper includes providing a pulping vessel with a rotor and at least one flow sensor to measure slurry flow within the pulping vessel. The pulping vessel is charged a slurry (wastepaper and water), the amounts of ...  
WO/2018/217149A1
The invention relates to a chip chute (4; 21; 31; 41) which comprises an elongated, open main body (22; 32; 42) having a rectangular transverse cross-section, and comprises further a transition portion (23; 33; 43), which connects to the...  
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/2018/201241A1
Methods and systems for controlling operation of a smelt dissolving tank receiving a flow of smelt and having a vent stack in fluid communication are provided. A dissolving liquid is injected into the smelt dissolving tank at a predeterm...  
WO/2018/146379A1
Determining a degree of breaking down of the fiber particles into fines in pulp is performed by transmitting (1000) optical radiation to the pulp (104); and determining (1002) the degree of breaking down of the fiber particles into fines...  
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/2018/106169A1
The invention relates to a top separator for a treatment vessel for the manufacture of pulp from lignocellulosic material and comprises a housing, an interior casing arranged in the housing and having a bottom portion, a screen basket ar...  
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/2018/094493A1
The present invention refers to the separation of cellulose pulp into distinct fractions with different draining and morphological characteristics, as well as the use of part of these fractions for the production of nanocellulose. The pr...  
WO/2018/073491A1
A screen assembly for a digester, impregnation vessel or other treatment vessel for separation of cooking liquor or treatment liquor from lignocellulosic material, typically in a form of chips, in the production of chemical cellulose pul...  
WO/2018/041975A1
A hydrolysis of particulate lignocellulosic material with hydrochloric acid, characterized in that the hydrolysis is carried out in a hydrolysis reactor, which hydrolysis reactor comprises - a cylindrical body with a wall structure of fi...  
WO/2017/212111A1
The present invention relates to a method of producing chemical pulp at a conĀ¬ tinuous digester plant. The method comprises the following steps: a) leading a slurry formed of comminuted cellulosic fibrous material and liquid into a dige...  
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/2017/171608A1
A screen feed arrangement for a pulp production process, comprising a discharge tank having an outlet, which is connected to an inlet of a discharge tank pump having an outlet, a dilution tank having an outlet, a screen feed pump having ...  
WO/2017/125287A1
A food or plant material extraction testing system, apparatus and method are disclosed. The system comprises a chamber with a first opening for allowing food or plant material to be added and a second opening for allowing material to be ...  
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/2017/105618A1
A method for treating pulp through oxygen delignification and ozone bleaching is disclosed. The method uses a modified oxygen recovery unit which separates a mixture of oxygen and ozone thereby generating a stream of ozone and a stream o...  
WO/2017/099654A1
The invention relates to an improved treatment vessel screen (SC) for continuous treatment vessels. In order to obtain an easy cleaning of the withdrawal space behind screens in treatment vessels is the screen designed such that it may s...  
WO/2017/091138A1
The invention relates to an improved design of the bottom of a treatment vessel facilitating feed out of comminuted cellulosic material reducing the torque load on conventional bottom scrapers. The bottom of the treatment vessel has a co...  
WO/2017/086856A1
The invention relates to an improved method for generating steam in a digester plant of a chemical pulp mill. A mixture of alkaline cooking liquor and black liquor is before charge to the digester system heated in a reboiler producing bl...  
WO/2016/171604A1
A discharge valve (20) comprising a valve housing (21) which can be functionally connected to a process element (10) having a pressurized interior space. The valve housing (21) comprises a flow channel (22) having a longitudinal centre a...  
WO/2016/128223A1
It is disclosed a process to transfer a ligno-cellulosic feedstock from a low pressure zone to a high pressure zone. A slurry the ligno-cellulosic feedstock is first provided, which is then subjected to a multi-step liquid removal proces...  
WO/2016/128224A1
It is disclosed a process to transfer a ligno-cellulosic feedstock from a low pressure zone to a high pressure zone. A slurry the ligno-cellulosic feedstock is first provided, which is then subjected to a multi-step liquid removal proces...  
WO/2016/124121A1
A continuous horizontal stewing pot, comprising a cylindrical pressure pot body (1) capable of rotating by taking an own central axis as an axis. A charging apparatus (2) which is communicated with an inner cavity of the pot body and can...  
WO/2016/105270A1
According to the present invention, a feeding arrangement (20; 40) for feeding lignocellulosic biomass material such as annual plant material towards a hydrolysis process comprises at least one transportation device (24, 25; 41) for tran...  
WO/2016/087717A1
The present invention relates to a batch digester for treating comminuted lignocellulosic fibrous material. The digester comprises an inlet for introducing comminuted lignocellulosic fibrous material, a circular cylindrical wall portion,...  

Matches 1 - 50 out of 990