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8940133 Product and processes from an integrated forest biorefinery  
An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The...
8815053 Method of treating liquid flows at a chemical pulp mill  
A method of treating and utilizing liquid flows at a chemical pulp mill including stages for: a) chemical pulp is produced in an alkaline cooking process, b) the brown stock generated in the...
8778135 Circular utilization method in pulping and papermaking processes with straw  
A circular utilization method in pulping and papermaking processes with straw Primary pulp is obtained by digesting straw raw material according to the ammonium sulfite method. Concentrated black...
8771465 Raw Paper  
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...
8617354 Shaped cellulose manufacturing process combined with a pulp mill recovery system  
Provided is a process for manufacturing shaped cellulose materials from lignocellulose where a dissolving grade pulp is manufactured and dissolved in an aqueous alkaline or acidic solvent system...
8518213 Process for producing alcohol and other bioproducts from biomass extracts in a kraft pulp mill  
A method for the production of alcohol and other bioproducts from power boiler woody biomass extract containing hemicelluloses, with or without combining extract from wood prior to Kraft cooking....
8317975 Product and processes from an integrated forest biorefinery  
An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The...
8303772 Method for preparing a grass-type unbleached paper product  
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...
8268120 Method for bleaching chemical paper pulps by final ozone treatment at high temperature  
A method for treating a prebleached chemical pulp including a step of ozone treatment of the pulp, carried out at a temperature above 60° C., advantageously above 65° C. and even more...
8268119 Method and apparatus for reducing impurities in cellulose fibers for manufacture of fiber reinforced cement composite materials  
A method of manufacturing high purity fiber cement grades of cellulose fibers is described. Additional washing steps, coupled with an elevated temperature, are used in the process to extensively...
8133352 Method and apparatus for reducing impurities in cellulose fibers for manufacture of fiber reinforced cement composite materials  
A method of manufacturing high purity fiber cement grades of cellulose fibers is described. Additional washing steps, coupled with an elevated temperature, are used in the process to extensively...
7736463 Method for manufacturing bleached mechanical and chemithermomechanical pulp  
A method of manufacturing bleached mechanical and chemithermomechanical pulp is provided, having enhanced bleaching effect, wherein lignocellulose material is passed through at least one preheater...
7520958 Modified kraft fibers  
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...
7402224 Method for producing paper pulp, lignins, sugars and acetic acid by frantionation of lignocellulosic vegetable material in formic/acetic acid medium  
A method for producing paper pulp from a lignocellulosie vegetable raw material. The method includes contacting the raw material with a mixture of formic acid and acetic acid (in an amount more...
7374637 Method of bleaching cellulose pulp with a main conduit for wash liquor and filtrate  
The method is for bleaching cellulose pulp in a bleach line that has at least two bleaching steps. The filtrate distribution is led up through the bleaching line counter-currently to the flow of...
7368036 Xylanase treatment of chemical pulp  
The present invention discloses methods of bleaching chemical pulp that use xylanase enzymes after chemical bleaching. The method comprises the steps of carrying out a chlorine dioxide stage to...
7294227 Method and system for the treatment of pulp prior to ozone bleaching  
A system for treating pulp comprises a dewatering device (2) for dewatering the pulp to a fiber concentration of at least 20%, a closed pulp-shredding vessel (16) for shredding the dewatered pulp,...
7282115 Method for mitigating the interference caused by high-molecular weight-by-products in pulping processes  
Separation of dissolved and colloidal high molecular weight organic by-products from liquors or filtrates in a cellulosic pulping process to improve the overall efficiency of the process.
7267744 Pulp treatment and process  
This invention provides a process for treating chemical woodpulp, or chemical cellulose including cotton linter, including the step of applying an electron processing technology (EPT) step to...
7214291 Method for the modification of cellulose fibres  
The invention relates to a method for the modification of cellulose fiber with the object of increasing the strength properties of the pulp. Cellulose derivative, preferably in the form of CMC, is...
7189306 Process of treating lignocellulosic material to produce bio-ethanol  
This invention relates to a process of treating a lignocellulosic material to produce bio-ethanol. The process includes the steps of: (a) exposing the lignocellulosic material to conditions...
7182835 Two-stage chlorine bleaching process with filtrate recirculation  
Methods for bleaching chemical pulp are disclosed including dewatering the pulp to a concentration of from 25 to 40%, bleaching in a first chlorine dioxide stage, followed by a second alkaline...
7156952 Method and arrangement for oxygen delignification of cellulose pulp  
The invention relates to a method and arrangement for alkaline oxygen delignification of cellulose pulp. By adding alkali in the final phase of the oxygen delignification one can ensure that an...
7097740 Method and screen for screening at least two pulp mixtures  
The invention relates to a method and a screen for screening two or more pulp mixtures with different roughness. The screen comprises a first screen cylinder and a second screen cylinder. A coarse...
7083704 Process for making a composition for conversion to lyocell fiber from an alkaline pulp having low average degree of polymerization values  
The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low copper number and including cellulose that has a low average degree of...
7022837 Cellulose ethers and method of preparing the same  
The present inventors have discovered that the solution rheology of cellulose ethers prepared from cellulose pulp is altered by mercerizing and recovering cellulose pulp before preparing the...
7014684 Method for the treatment of waste gas from a cellulose plant  
A process and a device for cleaning waste gas from pulp production, especially for cleaning waste gases from a bleaching reactor. Aerosols contained in the waste gas are removed and the gaseous...
6946057 Alkaline process for the manufacturing of pulp using alkali metaborate as buffering alkali  
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...
6942754 Process for producing xylooligosaccharide from lignocellulose pulp  
Xylooligosaccharide is produced from a lignocellulose pulp by enzyme-treating a lignocellulose pulp with hemicellulase, filtering the resultant reaction mixture to separate a liquid fraction from...
6861023 Process for making lyocell fiber from sawdust pulp  
A process for making lyocell fibers including the steps of pulping raw material in a digester to provide an alkaline pulp, wherein the raw material includes sawdust in an amount greater than 0% up...
6841036 Process for the oxygen delignification of pulp in two stages with higher pressure in the second stage  
A system and process for the oxygen delignification of pulp consisting of a lignocellulose-containing material that has a mean concentration of 8-18% pulp consistency. The oxygen delignification...
6824646 Process for oxygen bleaching and enzyme treating lignocellulosic pulp with liquid treatment and recovery  
Lignocellulose pulp is bleached by bleaching a pulp in aqueous alkali solution with oxygen and treating the pulp with a hemicellulase, while a liquid fraction delivered from the enzyme treatment...
6808596 System for the oxygen delignification of pulp consisting of lignocellulose-containing material  
The system is for the oxygen delignification, in at least two reaction stages, of pulp that consists of lignocellulose-containing material having a mean concentration of 8%-18% pulp consistency....
6776876 Method of treating cellulosic pulp to remove hexenuronic acid  
Chemical cellulose pulp produced by alkaline delignification and having a kappa number of under 24 (e.g. 14 or below) having hexenuronic acid is treated to remove at least 50% of the hexenuronic...
6773547 Process for the bleaching of low consistency pulp using high partial pressure ozone  
Provided is a process for bleaching pulp with ozone. The process involves preparing a slurry of cellulosic pulp having a consistency in fibers of from 1 up to 5 weight %. Such a low consistency...
6770168 Process for oxygen pulping of lignocellulosic material and recorvery of pulping chemicals  
A substantially sulfur free process for the manufacturing of a chemical pulp with an integrated recovery system for recovery of pulping chemicals is carried out on in several stages involving...
6736934 Method of pretreating pulp in an acid tower prior to bleaching with peroxide  
The present invention relates to a method of pretreating, by acidification and chelation, of pulp to be bleached with peroxide. Especially, the invention relates to intensifying, and at the same...
6733625 Method and apparatus for treating pulp  
The present invention relates to a method of treating chemical pulp in order to optimize the consumption of bleaching chemicals and to improve the quality of the pulp. Especially the invention...
6706143 Minimizing chlorinated organics in pulp bleaching processes  
The invention relates to methods for reducing the amount of halogenated organics produced during a halogen bleaching process for lignocellulosic pulp fibers. According to the disclosed invention,...
6699358 Method for brightening chemical pulp with hydrogen peroxide using a magnesium compound in silicate solution  
A method for brightening chemical pulps with less than 18% lignin utilizing a magnesium compound in a sodium silicate solution to form a higher percentage of high molecular weight silicates. Such...
6679972 Process for the bleaching of a pulp suspension by separating calcium from lignin  
A process for the bleaching of lignin present in pulp fibers in an aqueous environment such as a pulp suspension. The invention also relates to a process for producing paper or board from pulp...
6660128 Oxidase process for pulp  
A method for selectively delignifying lignocellulosic materials and bleaching of pulp and dyes using a combination of an oxidative enzyme and a metal complex. More specifically, the process...
6627041 Method of bleaching and providing papermaking fibers with durable curl  
A process for bleaching high bulk cellulosic fiber and producing a durable elevated curl index includes: (a) concurrently bleaching, heat treating and convolving cellulosic fiber pulp at elevated...
6620292 Cellulose production from lignocellulosic biomass  
A multi-function process is described for the separation of cellulose fibers from the other constituents of lignocellulosic biomass such as found in trees, grasses, agricultural waste, and waste...
6605181 Peroxide bleach sequence including an acidic bleach stage and including a wash stage  
A method and device for bleaching chemical paper pulp or dissolving wood pulp, which has been cooked and delignified without employing chlorine-containing chemicals, comprising a bleaching...
6579411 Bleaching medium consistency pulp with ozone  
A method of bleaching cellulose pulp with ozone includes pumping cellulose pulp in form of a fiber suspension having a consistency range of 5 to 25% with a high-consistency pump to a fluidizing...
6579412 Process for ozone bleaching of low consistency pulp  
Provided is a process for bleaching pulp with ozone. The process involves preparing a slurry of cellulosic pulp having a consistency in fibers of from 1-5 weight %. Such a low consistency slurry...
6569284 Elemental-chlorine-free bleaching process having an initial Eo or Eop stage  
The specification discloses an improved bleaching sequence which provides significant reduction in filtrate volumes and amounts of absorbable organic halide (AOX), color, and chemical oxygen...
6547923 Process for bleaching medium consistency pulp with ozone using a pressurized fluidizing mixer  
A method of bleaching cellulose pulp with ozone includes pumping cellulose pulp in form of a fiber suspension having a consistency range of 5 to 25% with a high-consistency pump to a fluidizing...
6514380 Treatment of chemical pulp  
Chemical pulp is produced by cooking comminuted cellulosic fibrous material (e.g. wood chips) in a continuous digester or batch digesters or produce brown stock, and washing the brown stock in a...

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