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8044120 |
Ionic liquids for solubilizing polymers
The present invention relates to a liquid composition which comprises at least one polymer and at least one ionic liquid, the cations of which are derived from polycyclic amidine bases, and a...
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8038840 |
Process for refining and producing cellulose, lignin and xylose from biomass material
A process for refining and producing cellulose, lignin and xylose from biomass material comprises the following steps: pulverizing and screening the biomass material; and then dipping the biomass...
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7960520 |
Conversion of lignocellulosic biomass to chemicals and fuels
A method for preparing biomass for slurry processing. The method includes solubilizing the solid material into either a dissolved state or a suspended solid in a liquid phase, and treating the...
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7686964 |
Method and device for washing of lime mud
The method and an arrangement are for dewatering and washing lime slurry before the dewatered lime mud is passed to a lime mud kiln. The lime slurry is dewatered in a pressurized lime mud filter of...
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7465791 |
Continuous counter-current organosolv processing of lignocellulosic feedstocks
A modular process for organosolv fractionation of lignocellulosic feedstocks into component parts and further processing of said component parts into at least fuel-grade ethanol and four classes of...
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7198695 |
Method for separating hemicelluloses from a biomass containing hemicelluloses and biomass and hemicelluloses obtained by said method
The invention relates to a method for separating hemicelluloses from a biomass containing hemicelluloses. The method includes the steps of: a) extracting the hemicelluloses from the biomass...
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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...
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6896810 |
Process for producing alkaline treated cellulosic fibers
Systems and methods by which to subject cellulosic fibers to alkaline treatment are provided. The systems and methods of the invention include equipment, such as nanofiltration units and slurry...
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6419788 |
Method of treating lignocellulosic biomass to produce cellulose
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...
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6409882 |
Tall oil refining improvement
In a tall oil refining operating plant, a warm water loop is disclosed for cooling the tall oil heads fraction extracted from the crude tall oil, rather than the conventional use of cold water....
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6280567 |
System and method for treatment of cellulose-containing material prior to pulp digestion
The invention relates to a process system and a method for preliminary treatment of disintegrated cellulose-containing material, preferably wood chips, prior to pulp digestion. The process system...
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6261411 |
Process for kraft chemical recovery
A method of recovering chemicals from spent black liquor used in a kraft pulping process comprising organic materials having oxygen containing functional groups, the method comprising heating the...
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6168642 |
Industrial utilization of garbage with effective recycling and with optimization in energy production
A recycling process for garbage containing a high proportion of paper where printed paper is first separated from the garbage. The garbage is then into pieces and light and heavy components are...
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6136144 |
Method of removing sulfur from a process gas stream using a packed bed calcinator
The present invention reduces the sulfur and odor emissions from a paper-making Kraft process by recovering the sulfur in the non-combustible gases (NGCs) emitted by the Kraft process. In a first...
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6110323 |
Methods of refining agricultural residues to absorbent cellulose, xylose, and plant nutrient liquor, and products produced by such methods
A method of creating a number of separate product streams from an agricultural waste material, comprising: providing a starting material consisting of an agricultural waste material; hydrolyzing...
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5855736 |
Method of reducing corrosion in a power boiler of a pulp mill
Method of reducing corrosion in a power boiler of a pulp mill using biofuel and suspended matter obtained from the waste water treatment of the mill. In the method flue gases obtained from a waste...
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5589030 |
Method for preparing vanillin from old newsprint
This invention relates generally to a method for extracting lignosulfonate for the manufacture of vanillin and other specialty chemicals. Specifically, the invention relates to a method for...
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5338366 |
Acid pre-hydrolysis reactor system
Biomass, such as bagasse, is pre-hydrolyzed, to ultimately effect hydrolysis of hemicellulose to sugars. Biomass is mixed with a mineral acid solution to form a slurry having a consistency of about...
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5326433 |
Multi-level sulfide content white liquor production and utilization in cellulose pulping
Paper pulp (e.g. kraft pulp) is produced utilizing at least two different supplies of cooking liquor, one having low sulfide content, and the other high sulfide content. The high sulfide content...
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5234546 |
Polysulfide production in white liquor
Off gases from black liquor heat treatment, evaporators, wood pulp digesters, etc. are treated to produce primarily hydrogen sulfide and sulfur free fuel gases such as methane, carbon monoxide,...
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5164480 |
Method for the manufacture of tall oils
The present invention relates to the direct electrolysis of tall oil soap (TOS) to produce crude tall oil (CTO). An aqueous tall oil soap solution generated in a kraft wood-pulping process is...
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4992105 |
Method and apparatus for the hydrolytic separation of cellulose
A plurality of reactors, which can all be interconnected selectively by way of pipes, are used for the hydrolytic separation of a cellulose-containing substrate so that a stepwise pressure...
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4966650 |
Method for fractionation of lignins from steam exploded lignocellulosics to provide fractions with different properties
The chemical components of lignocellulosic material which have been dissociated by a steam explosion process can be extracted from the mixture of components using a solvent extraction process. The...
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4964995 |
Supercritical separation process for complex organic mixtures
A process is disclosed for separating low molecular weight components from complex aqueous organic mixtures. The process includes preparing a separation solution of supercritical carbon dioxide...
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4963227 |
System and apparatus for recovery of turpentine from thermomechanical pulping process
There has been provided a system and apparatus for recovering turpentine from a thermomechanical pulping process for making paper, which thermomechanical pulping process utilizes a plug screw...
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4879369 |
Method of removing lignin from tall oil
Lignin is removed from a crude tall oil in the production of tall oil fractions suitable for use as chemical ingredients and additives in other products by sparging the crude tall oil at a...
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4826566 |
Rapid disolution of lignin and other non-carbohydrates from ligno-cellulosic materials impregnated with a reaction product of triethyleneglycol and an organic acid
A method of rapidly and efficiently treating ligno-cellulosic material for removal of lignin and other non-carbohydrates as well as non-cellulosic carbohydrates from cellulosic matter. Such...
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4735683 |
Process for preparation of potassium salts from pulp of lignocellulosic materials
Described herein is a process for producing potassium salts from potassium-based liquors for pulping of lignocellulosic material. The process comprises the steps of (a) digesting lignocellulosic...
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4708746 |
Method the hydrolytic splitting of acid treated comminuted crude cellulose with steam
A method for acid-catalyzed hydrolytic splitting of cellulose to give a high yield in sugar with a minimal expenditure in energy, in particular, with the smallest possible charge of live steam....
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4645541 |
Method of producing level off DP microcrystallinecellulose and glucose from lignocellulosic material
Microcrystalline cellulose has many applications in the pharmaceutical, food, paper and structural composite industries. Level off DP (Degree of Polymerization) microcrystalline cellulose is made...
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4612286 |
Acid hydrolysis of biomass for alcohol production
A method of treating biomass having fermentable material is provided utilizing acid hydrolysis in a countercurrent diffusion treatment structure. By practicing the invention acid usage is...
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4589924 |
Process for hydrolyzing cellulose-containing material with gaseous hydrogen fluoride
The semi-continuous process according to the invention for hydrolyzing cellulose-containing material (substrate) with gaseous hydrogen fluoride comprises sorption and subsequent desorption of HF in...
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4547263 |
Method for obtaining useful products from green pseudostem, including papermaking pulp plantain
A method and apparatus for continuously producing pulp from previously unusable agricultural fibers, such as plantain. The pulp is used in papermaking. The pulp effluent is recycled and...
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4470851 |
High efficiency organosolv saccharification process
Comminuted cellulosic materials which may or may not contain lignin are partially or totally hydrolyzed or saccharified by an improved organosolv process using an aqueous acetone solvent mixture...
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4409032 |
Organosolv delignification and saccharification process for lignocellulosic plant materials
Cellulose-containing material is rapidly saccharified to convert pentosans and hexosans to sugars by cooking under pressure at from 180° C. to 220° C. with acetone-water solvent mixture carrying f...
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4259147 |
Pulping process
A versatile process and apparatus is presented for producing, in high yields, many different grades of pulp from a single wood specie or for pulping any specie or type of woody material, and for...
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4159223 |
Use of activated carbon to recover and separate chemicals produced during pulping operations
Chemicals produced during pulping operations are recovered and separated by passing chemical-containing liquors from said operations through one or more units containing activated carbon. The...
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4134786 |
Process for purification of waste water produced by a Kraft process pulp and paper mill
A method and means for purifying the waste water from paper and pulp mill wastes obtained from a mill using the Kraft process by first precipitating lignins and lignin derivatives from the waste...
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4087316 |
Process for obtaining seed hull commodities including cellulosic fibers and xylitol
Cellulosic fibers are removed from seed hulls such as cottonseed hulls by a process including (a) in the absence of mechanical action sufficient to cause degradation of fiber properties, contacting...
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4025356 |
Method for continuous hydrolysis of pentose containing material and apparatus for implementing the method
Method and apparatus for the continuous acid hydrolysis of pentosan-containing material at a temperature between 80° and 120° C and at a pH lower than 5. At least two portions of hydrolysate are r...
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3928121 |
Process for the obtention of fermentable powdered syrup and alphacellulose from xerophyte plants
A process for the obtention of fermentable powdered syrup and alpha-cellulose from xerophyte plants, particularly of the genus Amarillidaceae, such as Agave, comprises separately removing the plant...
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3871951 |
TURPENTINE RECOVERY BY STEAM DISTILLING WOODCHIPS WHILE THEY ARE IMMERSED
Disclosed is a method for extracting turpentine from woodchips prior to digestion to woodpulp by steam distilling turpentine from the woodchips in an aqueous alkaline solution. Improved recoveries...
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3640768 |
PROCESS FOR HYDROLYTIC DEGRADATION OF CELLULOSIC MATERIALS TO SUGARS
Cellulosic materials are chemically degraded in a percolator vessel by introducing a liquid agent from below into the cellulosic materials placed above the filter area of the vessel while the...
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3578553 |
NITROGEN DIOXIDE PULPING PROCESS
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3079304 |
Method of processing a celluloselignin complex
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2999783 |
Process for simultaneous production of high alpha-pulp with furfural from latifoliate tree materials
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2921879 |
Method of producing conidendrin
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2827454 |
Method of recovering chlorophyll
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