Matches 1 - 47 out of 47


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US20110192559 METHODS FOR PRETREATING BIOMASS  
A method of alkaline pretreatment of biomass, in particular, pretreating biomass with gaseous ammonia.
US20090114352 Process and system for calcination of high solids kraft paper pulp mill lime mud  
The invention features methods and systems for calcining wet calcium carbonate lime mud produced in a re-causticizing manufacturing operation, for instance, Kraft pulp mill lime mud (“lime mud”)...
US20130340960 METHOD AND ARRANGEMENT FOR SEPARATING CONTAMINANTS FROM LIQUIDS OR VAPORS  
A method and assembly for separating contaminants from liquids, such as condensates, or vapors at an evaporation plant. The contaminants are separated from liquids by stripping when bringing a...
US20110247771 METHOD AND APPARATUS FOR PROCESSING BLACK LIQUOR OF PULP MILL  
The invention relates to a method and apparatus for processing the black liquor of a pulp mill to recover the chemicals and energy therein. In the invention, the black liquor is pyrolyzed in a...
US20120073772 GASIFICATION OF SULPHITE THICK LIQUOR  
Method for recovering chemicals and energy from sulphite thick liquor containing organic and inorganic compounds obtained when producing pulp by chemical delignification of fibrous raw material...
US20060124257 Method for bleaching mechanically defibered pulp  
The invention relates to a method for bleaching mechanically defibered pulp with peroxide in alkaline conditions and for washing the bleached pulp and recovering chemicals from the spent liquor...
US20070131363 Fiberline systems, processes and methods  
A chemical pulp mill system and method of using black liquor flashing steam from a digester system comprises generating black liquor in the digester system, sending the black liquor to an...
US20070036695 Shielding arrangement for the smelt spout area of a recovery boiler  
A method for improving the operation safety of the smelt spout area of a recovery boiler, which smelt spout area comprises a working area (6), as well as smelt spouts (2) connected to the lower...
US20110067829 MAINTENANCE OF SULFUR CONCENTRATION IN KRAFT PULP PROCESSES  
Methods and apparatus for maintaining sulfur concentration in the chemical recovery cycle of a Kraft pulping process. A portion of the recovery boiler ash is dissolved, treated to remove solids,...
US20060016751 Method of concentrating pulp mill extracts  
A process for separating organic components from a pulp mill waste stream comprising the steps of washing a cellulose pulp to obtain an aqueous extraction liquor containing organic components, and...
US20070034344 Desulphurization of odorous gases of a pulp mill  
The invention relates to a method and an arrangement for the removal of concentrated odorous gases of a pulp mill. According to the method, the concentrated odorous gases containing sulphur...
US20140034253 PROCESS FOR ACETIC ACID REMOVAL FROM PRETREATED BIOMASS  
The process for treating a ligno-cellulosic biomass feed stream comprised of solids, C5's, C6's, lignin, and water comprises the steps of: pretreating the ligno-cellulosic biomass feed stream by...
US20110120662 METHOD AND EQUIPMENT FOR TREATMENT OF BLACK LIQUOR AT PULP MILL  
The invention relates to a method and equipment for treatment of black liquor at a pulp mill in order to recover chemicals and energy contained therein. In the invention, the black liquor is...
US20090266500 PROCESS FOR PRODUCING TISSUE PAPER  
The invention relates to a process for producing a tissue web, which is produced from a stock suspension including fibers. In this case, the volume and the tearing length are to be improved with...
US20090114353 Method of Papermaking  
An inventive method of papermaking can be provided for creating an optimum wet end environment. In a preferred method, an aqueous solution of sodium hypochlorite acidified by hydrochloric acid to...
US20150167240 BIOMASS TREATMENT FOR HYDROTHERMAL HYDROCATALYTIC CONVERSION  
A selective removal of metal and its anion species that are detrimental to subsequent hydrothermal hydrocatalytic conversion from the biomass feed prior to carrying out catalytic...
US20060225852 Process for removing silica from cellulosic material  
A method of cellulosic raw material desilication involves the steps of impregnating the cellulosic raw material with a solution containing sodium carbonate to form a silica-containing impregnation...
US20070215300 Solvents For Use In The Treatment Of Lignin-Containing Materials  
A method for the treatment of a lignin-containing material such as wood pulp, bagasse and other plant-derived materials, comprising contacting the lignin-containing material with an ionic liquid...
US20110094692 METHODS OF PRETREATING COMMINUTED CELLULOSIC MATERIAL WITH CARBONATE-CONTAINING SOLUTIONS  
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...
US20140326421 Processes for Purifying a Cellulosic Material  
A process for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therefrom and separating the extracted...
US20070284068 METHODS FOR CARBONATE PRETREATMENT AND PULPING OF CELLULOSIC MATERIAL  
A method of pretreating comminuted fibrous material with sodium carbonate and then cooking the pretreated material in the presence of anthraquinone (AQ) is provided. The resulting pulp produced...
US20090025892 Method to recover chemicals in mechanical pulping  
The present invention refers to a method to recover chemicals in mechanical pulping by evaporating mechanical pulping or recycled fibre plant effluent and burning the received concentrate under...
US20100071862 METHOD AND EQUIPMENT FOR THE EVAPORATION OF BLACK LIQUOR THAT IS OBTAINED FROM A DIGESTION PROCESS DURING THE PRODUCTION OF CELLULOSE PULP  
The method and equipment are for the evaporation of hot black liquor obtained from a digestion process during the production of cellulose pulp. The black liquor is led to a multistage evaporation...
US20100243184 METHOD FOR TREATING LIQUID FLOWS AT A CHEMICAL PULP MILL  
A method for treating liquid flows at a chemical pulp mill including at least an alkaline cooking process for producing pulp, brown stock treatment with essentially closed liquid cycles, a pulp...
US20110192560 PROCESS OF PRODUCING XYLOSE AND DISSOLVING PULP  
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...
US20100224334 METHOD FOR TREATING LIQUID FLOWS AT A CHEMICAL PULP MILL  
A method for treating liquid flows at a chemical pulp mill including at least an alkaline cooking process for producing pulp, treatment of brown stock generated in the cooking, a bleaching plant...
US20120135485 SORBENT AND PROCESS FOR REMOVING FERMENTATION INHIBITORS  
The invention pertains to, for example, an improved sorbent and process for removing fermentation inhibitors such as furfural and/or HMF in microbial processes utilizing fermentable sugars...
US20060070710 Method and a device for preparing cellulose pulp  
A method and an apparatus for preparing cellulose pulp, in which a lignin-containing raw material is impregnated with impregnation liquor and the impregnated raw material is cooked. The black...
US20050252624 Process and apparatus for producing thermal and electric energy  
The invention relates to a process and apparatus for the production of thermal and electric energy in a pulp mill, in particular a sulfate pulp mill, according to which process and waste liquor of...
US20110079364 Process for Controlling Ammonia Loss  
A method of offsetting losses of ammonia from a pulping mill comprising cooking a lignocellulosic material in a cooking liquor, wherein cooking in the cooking liquor separates the lignocellulosic...
US20150152600 Method For Bleaching Pulp  
A method for bleaching pulp is provided. In the method at least one tertiary amine compound is introduced into a process stage of bleaching. This process stage is a stage which comprises mixing...
US20110226427 Method of Recovering Aqueous N-methylmorpholine-N-Oxide Solution Used in Production of Lyocell Fiber  
A method of recovering an aqueous N-methylmorpholine-N-oxide (NMMO) solution used in production of Lyocell fiber includes: decoloring the aqueous NMMO solution by mixing the same with activated...
US20060049106 Method and arrangement in maing of mechanical pulp  
The object of the present invention is a method and arrangement in making of mechanical pulp to reduce the amount of organic dissolved and colloidal substances in the pulp making process water by...
US20140352900 FLASH TANK WITH FLARED INLET INSERT AND METHOD FOR INTRODUCING FLOW INTO A FLASH TANK  
A flash tank including: an interior chamber having a interior surface formed by a sidewall of the flash tank; a vapor exhaust port coupled to an upper portion of the chamber; a liquid discharge...
US20100032111 PROCESS FOR PRODUCING FIBROUS MATERIAL FROM WOOD  
A process for producing fibrous material which includes the following: preparing a solution of chemicals that includes less than 25% of sulphite (calculated as Na2SO3), based on the oven-dry...
US20090126882 Generation of active polysulphide  
Polysulphide produced by oxidizing white liquor includes both active and inactive components. “Active” polysulphide is the only component that increases pulp yield. The amount of active...
US20060169430 METHOD FOR PRODUCING PULP AND LIGNIN  
The invention provides for methods for producing pulp (comprising cellulose) and lignin from lignocellulosic material, such as wood chips. The methods involve acid catalyzed hydrolysis....
US20100243183 METHOD IN CONNECTION WITH THE WASHING OF PULP AT A CHEMICAL PULP MILL  
A method in connection with washing of pulp at a chemical pulp mill including at least an alkaline cooking process utilizing cooking liquor for producing pulp, brown stock treatment with...
US20110094043 Method of synthesis of tetradentate amide macrocycle ligand and its metal-complex  
A tetradendate amide based macrocyclic ligand and its Fe(III) complex which act as activators of hydrogen peroxide. The synthetic methodology to develop the ligands is new, simple and provides...
US20110108222 EFFECT OF LOW DOSE XYLANASE ON PULP IN PREBLEACH TREATMENT PROCESS  
A prebleach treatment of pulp with xylanase enzyme prior to chemical bleaching is disclosed. A process of making pulp comprises treating a pulp with xylanase in an amount of less than 50 g of...
US20110223091 Spinning Fluids Reactor  
A spinning fluids reactor, includes a reactor body (24) having a circular cross-section and a fluid contactor screen (26) within the reactor body (24). The fluid contactor screen (26) having a...
US20120168102 PULPING PROCESS FOR QUALITY PROTECTION INCLUDING METHODS FOR HEMICELLULOSE EXTRACTION AND TREATMENT OF HEMICELLULOSE-EXTRACTED LIGNOCELLULOSIC MATERIALS  
A method for producing pulp by extracting hemicellulosic materials from lignocellulosic materials using water in an extraction stage, wherein the extraction stage is either a single extraction or...
US20130206346 FLASH TANK WITH ADJUSTABLE INLET AND METHOD FOR ADJUSTING INLET FLOW TO A FLASH TANK  
A flash tank including: a closed interior chamber; a gas exhaust port coupled to an upper portion of the chamber; a liquid discharge port coupled to a lower portion of the chamber; an inlet nozzle...
US20170183818 A METHOD OF FEEDING A SEALING MEDIUM INTO A LIQUOR FILTER AND A LIQUOR FILTER  
A method and a liquor filter, in which liquor filter sealing medium is fed via a sealing medium channel (3) into an innermost sealing zone formed by an innermost sealing member (1), an outer seal...
US20170030018 SYSTEM AND PROCESS FOR PULPING WOOD  
Wood pulping process including pulping wood to produce a pulping effluent or liquor. Pre-concentrating the liquor in a pre-concentration unit produces concentrated liquor, a contaminated...
US20160138200 ALKALI RECYCLE IN CELLULOSE SPINNING PROCESS  
The present invention concerns a method for the recovery of solvent in a process for preparation of regenerated cellulosic fibers using sodium hydroxide as solvent for cellulose dissolving in the...
US20150284909 FLASH TANK WITH ADJUSTABLE INLET AND METHOD FOR ADJUSTING INLET FLOW TO A FLASH TANK  
A flash tank including: a closed interior chamber; a gas exhaust port coupled to an upper portion of the chamber; a liquid discharge port coupled to a lower portion of the chamber; an inlet nozzle...

Matches 1 - 47 out of 47