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Matches 1 - 50 out of 3,126

Document Document Title
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/2018/067055A1
A method and system for the treatment of sludge in a chemical pulp mill including a step of hydrothermal carbonization (HTC) of a sludge stream, wherein said sludge stream is fed into a HTC arrangement and subjected to elevated temperatu...  
WO/2018/046791A1
A system (100) for producing aqueous sulphuric acid. The system (100) comprises a first heat exchanger (410) configured to cool water and/or aqueous sulphuric for producing cooled water and/or cooled aqueous sulphuric acid; a pre-cooling...  
WO/2018/046482A1
A system (10) for treating spent pulping liquor (14) comprising lignin to provide green liquor (47) is disclosed. The system (10) comprises an evaporator (22), a recovery boiler (34), at least one filter (58, 74), and a green liquor plan...  
WO/2018/041488A1
The invention relates to a process for isolation of hemicelluloses from biomass pulping process waters or spent liquors with removal of suspended solids, concentration of the product and purification of the product by removal of inorgani...  
WO/2018/033146A1
A system for preparing a biomass monomer by means of microbial coculture. With biomass as a substrate, by means of process regulation and control by a special device, coculture of biomass degrading microbes and target product microbes is...  
WO/2018/005989A1
An anaerobic digestion system may include a material grinding/pulping portion, a hydrolysis portion arranged downstream of the grinding portion, a multiple chamber anaerobic reactor arranged downstream from the hydrolysis portion and inc...  
WO/2018/004427A1
The present invention relates to a method of producing lignin with reduced amount of odorous substances comprising the stepsof: i) providing a solid phase lignin containing starting material to be contacted with a water solution comprisi...  
WO/2017/222455A1
The present invention relates to a method of producing lignin with reduced amount of odorous substances comprising the step of: • providing asolid phaselignin containing starting material to be contacted with a water solution comprisin...  
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/2017/200470A1
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/2017/191364A1
A method and a system for separating lignin from a lignin containing liquid medium. Lignin is precipitated from a lignin containing liquid medium, the method comprising: - adding a pH lowering agent to said lignin containing liquid mediu...  
WO/2017/178513A1
The present invention relates to a method for preparing monomers via depolymerisation from lignocellulose-containing biomass.  
WO/2017/178849A1
The present invention discloses the continuous process for production of cellulose pulp of very high whiteness from grass-like plant feedstock suitable for paper making. Process comprising the steps of: preparing the grass-like plant fee...  
WO/2017/175044A1
The present application discloses an alternative method for selective removal of K+ and Cl- from recovery boiler electrostatic precipitator ashes in a kraft-pulp process through the use of pure or impure CO2, complemented or not with a m...  
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/2017/142445A1
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/2017/130127A1
The present invention relates to extraction of phytosterolsfrom alkaline tall oil soap which is obtained from the Kraft process black liquor by skimming.In the method according to the present invention, phytosterols are extracted using d...  
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/2017/103329A1
The present invention provides a method for producing parenchymal cell cellulose by using a high consistency alkali treatment and an optional refinement step, as well as an apparatus for its manufacture.  
WO/2017/093511A1
The present invention relates to a method for fractionating a lignocellulosic biomass. More specifically, the present invention lies in the field of cellulose solvent- and organic solvent- based lignocellulose fractionation (COSLIF) of l...  
WO/2017/095313A1
It is disclosed a process to produce a bio-product starting from a ligno-cellulosic feedstock, comprising a pre-hydrolysis step of the ligno-cellulosic feedstock in one or more pre- hydrolysis vessels to produce a liquid pre -hydrolyzate...  
WO/2017/089656A1
The present invention relates to a method for removing chloride and potassium from ash formed in a recovery boiler at a pulp mill. Evaporated black liquor is fired, wherein the ash is made to a slurry in an aqueous solution in at least o...  
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/2017/078582A1
A process for producing a hydrocarbon product from a lignin oil, said lignin oil having an oxygen content of 10-30 wt-%, an average weight molecular weight of 500-800 g/mol with a polydispersity of 2, a heating value of 25-35 MJ/kg, a wa...  
WO/2017/077195A1
The invention relates to a method for optimising material recovery in a chemical pulping process. The method comprises treating of cellulosic raw material with cooking chemicals in a cooking step, where lignin is at least partly dissolve...  
WO/2017/066325A1
Embodiments of the present disclosure include a system, method, and apparatus comprising a direct steam generator (29) configured for the generation of electrical power from the direct steam generator (29).  
WO/2017/060722A1
A method of processing a feedstream comprising black or brown liquor which contains less than l%wt of hemicellulosic material, comprising: (a) contacting said feedstream with a C3-8 alkyl alcohol at elevated temperature and acidic pH to ...  
WO/2017/057685A1
The present invention is a method for pretreating lignocellulosic biomass that is executed prior to the transition to a steaming step, wherein the method is characterized by having a step for adding a catalyst solution to lignocellulosic...  
WO/2017/053342A1
A system and process is disclosed for treating foul condensate such as foul condensate produced in a Kraft pulp mill. Foul condensate is directed through a steam stripper to produce a clean condensate that is partially evaporated by a vo...  
WO/2017/048164A1
A process for batch wise production of bio-oil comprising the steps of a) preparing a black liquor composition comprising kraft black liquor, and having a hydroxide ion concentration of -40 g/l, preferably 5-15 g/l based on the volume of...  
WO/2017/048163A1
A process for continuously producing bio-oil comprising the steps of a) forming a black liquor composition in a mixing tank (T) by mixing kraft black liquor,acidifying agent (AA1), in an amount sufficient to adjust the hydroxide ion conc...  
WO/2017/039439A1
Hydrochloric acid is recovered from a lignin composition in a process, comprising providing a particulate lignin composition that comprises lignin, water and hydrochloric acid; contacting the particulate lignin composition with a stream ...  
WO2017009519A1
A method and means for washing a floor of a recovery boiler, comprising mixing by mixing devices wash water in which remaining salt on recovery boiler furnace floor dissolves, and where wash water is sucked from a wash water pool on the ...  
WO/2016/207493A1
According to an example aspect of the present invention, there is provided a method of producing reactive lignin from an alkaline lignin containing stream, such as black liquor, e.g. kraft lignin, by using thermal treatment with temperat...  
WO/2016/196430A1
A method of recovering wood pulping chemicals from black liquor produced in a wood pulping process where the process entails burning the black liquor in a recovery boiler to form ash containing high levels of carbonate as well as sodium,...  
WO/2016/179846A1
A zero discharge process of pulping waste liquid of all-cotton straw chemi-mechanical pulp. The process comprises: firstly performing front-end high concentration extraction of pulping waste liquid, then performing evaporation and concen...  
WO/2016/180627A1
The invention relates to a method, a device and a system for increasing a solids content in a raw material (1), in particular for increasing the solids content of a black liquor (1) during the production of pulp for paper production, pre...  
WO/2016/168924A1
Acid hydrolysis of biomass is an important step for releasing the component sugars before converting them to fuels and/or biochemicals. During such a process, a significant amount of mineral acid, such as sulfuric acid, is used. In most ...  
WO/2016/163931A1
The invention is related to improved polysulfide production process wherein a specific second filtration process (Fx) is installed before the polysulfide reactor (Rc). According to the inventive method a cross flow filter (Fx) is used as...  
WO/2016/121648A1
The present invention addresses the problem of providing a method for extracting xylan from a wood material easily and collecting the extracted xylan efficiently. A xylan-containing material can be produced by a method comprising the ste...  
WO/2016/105259A1
The present invention relates to a method of producing lignin with reduced amount of odorous substances comprising the steps of: i) dissolving isolated lignin into an alkali solution; ii)adding to the solution C1 -C 4 -alcohol in an amou...  
WO/2016/099392A1
The present invention relates to a process for producing a fertilizer comprising potassium sulfate, K2SO4, from precipitator ash from a pulp mill, wherein precipitator ash from a pulp mill is provided; water is provided; potassium chlori...  
WO/2016/093765A1
Method for purifying crude tall oil soap from black liquor, wherein a washing liquid is used, which washing liquid is either pH-regulated residual liquid from a tall oil producing processing step (180) or a pH-regulated aqueous solution ...  
WO/2016/072919A1
The invention relates to an improved two vessel cooking system, wherein the first vessel is an atmospheric impregnation vessel and the second vessel is a pressurized digester, where hot black liquor is finally flashed off inside the impr...  
WO/2016/062676A1
The present invention relates to a method for precipitating lignin from organosolv pulping liquors. For this purpose, the organosolv pulping liquor is introduced as a precipitation medium in an already existing aqueous dispersion of lign...  
WO/2016/058098A1
This disclosure pertains to the use of black liquors from kraft pulp mills as a source of catalysts for the thermochemical conversion of organic matter feedstocks to bio oils. More particularly, some embodiments pertain to integrated kra...  
WO/2016/051351A1
The present invention relates to a process for purifying, such as salt/ion depletion, and/or ash reduction,and/or sulphur removal, and/or free sugar depletion,and/or VOC depletion or fractionating,preferably by using dewatering, of a slu...  
WO/2016/046161A1
The invention discloses a process for treating black liquor comprising pyrolysing black liquor in a fluidized bed reactor to obtain solid particles and pyrolysed black liquor gas, heating the solid mass, returning the heated solid mass t...  
WO/2016/028214A1
The invention is characterised in the steps of a) performing a first separation of the mixture in a first centrifugal separator, resulting in a first heavy fraction comprised of the heavy phase with only small amounts of impurities in th...  

Matches 1 - 50 out of 3,126