A heteroazeotropic extractive distillation method is performed using two-stage heteroazeotropic extractive distillation within at least one distillation column (100, 102). A first stage (10) comprising distilling a first mixture (104) of water, at least acetic acid and formic acid and entrainer inside a temperature range difference 5°C to 20°C for separating water from the first mixture (104), which has a first percentage of said entrainer and a first percentage of water. A second stage (12) receives a bottom product of water, at least acetic acid and formic acid and said entrainer from a bottom section (108) of the first stage (10). The second stage (12) has a second percentage of said entrainer and a second percentage of water, wherein the second percentage of said entrainer being greater than the first percentage of said entrainer, and/or the first percentage of water being greater than the second percentage of water. At least a part of overhead vapor of at least one of the first stage (10) and the second stage (12) is pressurized by vapor recompression. At least a part of the first mixture (104) is circulated back to the first stage (10), and heat of the overhead vapor to first mixture (104) is circulated to the first stage (10).
It is disclosed a method for producing a precipitated lignin product comprising the steps of: providing a soluble lignin-containing organic solution; providing an aqueous precipitant solution comprising about 5% to about 40% of acid(s); adding the aqueous precipitant solution to the soluble lignin-containing organic solution to provide a mixture having a temperature in the range of about 40°C to about 90°C; cooling the mixture containing a precipitated lignin product for about 2 sec to about 2 hours; separating and recovering the precipitated lignin product from the mixture.
According to an example aspect of the present invention, there is provided a feed additive obtainable by a method comprising the steps of: providing a soluble lignin-containing organic solution; providing an aqueous precipitant solution comprising about wt-% to about 40 wt-% of acid(s); adding the aqueous precipitant solution to the soluble lignin-containing organic solution to provide a mixture having a temperature in the range of about 40°C to about 90°C; cooling the mixture containing a precipitated lignin product for about 2 sec to about 2 hours; separating and recovering the precipitated lignin product from the mixture; collecting the resulting mixture as a feed additive.
A23K 10/32 - Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hayAnimal feeding-stuffs from material of fungal origin, e.g. mushrooms from hydrolysates of wood or straw
A23K 10/37 - Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hayAnimal feeding-stuffs from material of fungal origin, e.g. mushrooms from waste material
A23K 50/75 - Feeding-stuffs specially adapted for particular animals for birds for poultry
It is disclosed a method for producing a lignin product, comprising the steps of: providing a soluble lignin-containing organic solution; providing an aqueous precipitant solution; adding the precipitant solution to the soluble lignin-containing organic solution to provide a mixture comprising precipitated lignin, mixing the mixture in a dynamic mixer at a speed of about 500 rpm to about 2000 rpm; separating and recovering the precipitated lignin product from the mixture.
A process apparatus for a distillation process comprises a distillation column (100) that processes material (104) of a mixture of water, at least acetic acid and formic acid and furfural, furfural being used as a former of azeotrope and an extractant in the mixture. A flowing material channel (102) is located between a lower section (106) of the column (100) and an upper section (108) of the column (100), the flowing material channel (102) comprising a solid material remover (110). A feed arrangement (112) is connected with the flowing material channel (102) between the lower section of the column (100) and the solid material remover (110). The flowing material channel (102) receives a stream of the processed material (104) from the lower section (106) of the column (100), a stream of precipitant from the feed arrangement (112), precipitation effect of the precipitant being based on water, and directs the mixture of the streams of precipitant and processed material (104) to the solid material remover (110), which removes solid material caused by the precipitant from the mixture. The flowing material channel (102) feeds a stream of the mixture, from which the solid material has been at least partly removed, to the upper section (108) of the column (100).
C07C 51/46 - SeparationPurificationStabilisationUse of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
A method of processing biomass by subjecting, in a digester (100), the biomass to bio-solvent and process control substance, which includes at least one inorganic substance determined as ash for intensifying formation of furfural; and separating furfural from the biomass processed in the digester (100).
A stripping column arrangement (100) of acid filtrate from hydrolysis of cellulosic feedstock, which is configured to utilize acetic and formic acids as bio-solvents, comprises one or more stripping columns (102). The stripping column arrangement (100) comprises a feed arrangement (104) that feeds acetic acid to the at least one stripping column (102) in response to variation of concentration of formic acid within the at least one stripping column (102) and/or in formic acid removed from the at least one stripping column (102).
B01D 1/14 - Evaporating with heated gases or vapours in contact with the liquid
B01D 3/34 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
A heteroazeotropic extractive distillation method comprises distilling (300), in a distillation column (100), a mixture (104) of water, at least acetic acid and formic acid and furfural, the furfural being used as a former of azeotrope and an extractant in the mixture (104). The method also comprises removing (302) a portion including polymerized furfural that is formed in the method at a rate that is equal to or higher than a threshold removal rate from the distillation column (100) and/or from a reboiler (102), which receives contents of the distillation column (100), the threshold removal rate keeping viscosity of the mixture (104) below a predetermined threshold viscosity value and/or a boiling point of the mixture (104) below a predetermined threshold boiling value. The portion that flows out of the column 100 at a removal rate may comprise solid matter and/or dry matter.
The invention relates to a method for the separation of lignin from an organic solvent, comprising multiple two-step cycles, wherein each two-step cycle comprises the steps of: adding an aqueous solution to a lignin-containing organic solvent to precipitate a portion of lignin present in the solvent; separating and recovering the lignin precipitate from the lignin-containing organic solvent to provide a lignin-reduced solution that forms a starting material to be treated with the aqueous solution in the next two-step cycle, wherein the method comprises at least two of said two-step cycles.
A method of hydrolysis of cellulose esters, comprising providing a solution containing cellulose esters; adding a hydrotropic agent to the solution containing cellulose esters; performing hydrolysis of cellulose esters by adding an aqueous solution to the solution containing cellulose esters to provide a mixture containing cellulose and acid(s) derived from cellulose esters.
The invention relates to a method of extracting extractives from a solid lignin fraction, comprising extracting a solid lignin fraction comprising extractives with an organic solvent to provide an organic extract containing the extractives.
A method of controlling viscosity in peroxide bleaching of a cellulose pulp, comprising treating the cellulose pulp with disodium 3,3'-((2-ethylhexyl)azanediyl)dipropionate as a chelating agent to chelate metals present in the pulp; peroxide bleaching the cellulose pulp in at least one stage at a pH of about 9.5 to about 13.
An arrangement for separating chemicals comprises a first distillation column (100) and the first distillation column (100) receives a mixture that comprises water and at least two organic acids and extractant that comprises at least one of the following: hexanol, an ester of hexanol with said at least one organic acid and 2-methylpentanol. The first distillation column (100) forms a heterogeneous azeotrope of water and extractant at its top (104) on the basis of reactive heteroazeotropic extractive distillation not controlling chemical reactions between the extractant and said at least two organic acids, said first distillation column (100) removing the azeotrope through its top (104) for separating water from the organic acid.
C07C 51/46 - SeparationPurificationStabilisationUse of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
C07C 67/327 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by splitting-off hydrogen or functional groupsPreparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by hydrogenolysis of functional groups by elimination of functional groups containing oxygen only in singly bound form
A process for the production of levulinic acid and formic acid and, if desired, cellulose, a sugar product and/or bio- ethanol from biomass in a formic acid-based cooking process, wherein the formic acid is used as a catalyst for the formation of levulinic acid.
The invention relates to manufacturing hydrolyzable cellulose and further, if desired, sugars from lignocellulosic material by means of formic and performic acid treatment.
A hydrolysis process apparatus comprises a hydrolysis process part (100) and an inlet connector structure (102) for receiving pulp (104) comprising polysaccharide and a catalyst and/or pre-catalyst (106), which produces a catalyst in the hydrolysis process part (100), and for transferring them to the hydrolysis process part (100). The hydrolysis process part (100) keeps the hydrolysis process of the mixture (108) comprising the pulp (104) and the catalyst (106) running by micromixing only for splitting the polysaccharide.
The invention relates to a method of improving the internal bond strength of paper manufactured from wood pulp by adding a certain type of non-wood composition to the wood pulp.
The invention relates to a method for producing sugars, such as glucose, by fractionating lignocellulose-containing biomass. The sugar product thus obtained is useful for the manufacture of bioethanol and other chemicals.
01 - Chemical and biological materials for industrial, scientific and agricultural use
11 - Environmental control apparatus
16 - Paper, cardboard and goods made from these materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
Cellulose, straw cellulose, cellulose acetate, cellulose
derivatives, cellulose esters and ethers for industrial use,
paper pulp, paper pulp made of straw, litmus paper,
blue-print paper, photo-sensitive paper, diazo paper,
reaction paper, self inking paper, chemicals used for
industrial manufacture of cellulose. Heating and cooking apparatus, including boilers, for the
manufacture of cellulose or the recovery of chemicals. Paper, board, and goods produced thereof not belonging to
the other classes. Engineering services, construction drawing, professional
consultation and advice particularly in respect of the
manufacturing technique of cellulose and paper.
01 - Chemical and biological materials for industrial, scientific and agricultural use
11 - Environmental control apparatus
16 - Paper, cardboard and goods made from these materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
Cellulose, straw cellulose, cellulose acetate, cellulose derivatives, cellulose esters and ethers for industrial use, paper pulp, paper pulp made of straw, litmus paper, blue-print paper, photo-sensitive paper, diazo paper, reaction paper, self inking paper, chemicals used for industrial manufacture of cellulose. Heating and cooking apparatus, including boilers, for the manufacture of cellulose or the recovery of chemicals. Paper, board, and goods produced thereof not belonging to the other classes. Engineering services, construction drawing, professional consultation and advice particularly in respect of the manufacturing technique of cellulose and paper.
01 - Chemical and biological materials for industrial, scientific and agricultural use
16 - Paper, cardboard and goods made from these materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
Cellulose, straw cellulose, cellulose acetate, cellulose derivatives, cellulose esters and ethers for industrial use, paper pulp, paper pulp made of straw, litmus paper, blue-print paper, photo-sensitive paper, diazo paper, reaction paper, self inking paper, chemicals used for industrial manufacture of cellulose. Paper, board, and goods produced thereof not belonging to the other classes. Engineering services, construction drawing, professional consultation and advice particularly in respect of the manufacturing technique of cellulose and paper.
