A method of processing an aqueous hemicellulosic stream containing lignin, comprising: (a) contacting an aqueous hemicellulosic stream containing lignin with a C3-8 alkyl alcohol at elevated temperature and acidic pH; (b) separating the reaction mixture obtained from step (a) into an aqueous phase containing hemicellulose-derived monosaccharide and an organic phase containing C3-8 alkyl alcohol; (c) concentrating the organic phase obtained from step (b) to remove at least some C3-8 alkyl alcohol; (d) treating the residue from step (c) with water or an aqueous medium having an alkaline pH; and (e) recovering C3-8 alkyl alcohol from the product of step (d).
A method of processing an aqueous hemicellulosic stream containing lignin, comprising: (a) contacting an aqueous hemicellulosic stream containing lignin with a C3-8 alkyl alcohol at elevated temperature and acidic pH; (b) separating the reaction mixture obtained from step (a) into an aqueous phase containing hemicellulose-derived monosaccharide and an organic phase containing C3-8 alkyl alcohol; (c) concentrating the organic phase obtained from step (b) to remove at least some C3-8 alkyl alcohol; (d) treating the residue from step (c) with water or an aqueous medium having an alkaline pH; and (e) recovering C3-8 alkyl alcohol from the product of step (d).
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
45 - Legal and security services; personal services for individuals.
Goods & Services
Processing, separation, treatment, extraction, disposal
and/or recycling of chemicals, prehydrolysate liquor,
xylose, furfural, butyl acetate and/or lignin in the paper
and/or pulp industries; conversion, processing, separation,
treatment, extraction, disposal and/or recycling of impure
process streams produced by paper and pulp mills into
chemical precursors; processing, separation, treatment,
extraction, disposal and/or recycling of xylose for use in
the production of xylitol; processing, separation,
treatment, extraction, disposal and/or recycling of
chemicals and/or waste materials for the purpose of
optimising or improving mass and energy usage in paper and
pulp mills; contract/custom manufacturing and/or assembly
services in the field of technology, biotechnology, science,
chemistry, biochemistry and/or engineering, in the paper
and/or pulp industries; contract/custom manufacturing and/or
assembly of chemicals, prehydrolysate liquor, xylose,
furfural, butyl acetate and/or lignin in the paper and/or
pulp industries; contract/custom manufacturing and/or
assembly of xylose for use in the production of xylitol;
consultancy, advisory, support and/or information services
relating to or connected with the aforementioned services. Scientific and/or technological services in the field of
technology, biotechnology, science, chemistry, biochemistry
and/or engineering, in the paper and/or pulp industries;
scientific and/or technological services relating to and/or
connected with the manufacture, production, processing,
treatment, extraction, purification and/or separation of
chemicals, prehydrolysate liquor, xylose, furfural, butyl
acetate and/or lignin in the paper and/or pulp industries;
scientific and/or technological services relating to and/or
connected with the conversion, manufacture, production,
processing, treatment, extraction, purification and/or
separation of impure process streams produced by paper and
pulp mills into chemical precursors; scientific and/or
technological services relating to and/or connected with the
manufacture, production, processing, treatment, extraction,
purification and/or separation of xylose for use in the
production of xylitol; scientific and/or technological
services relating to and/or connected with the optimisation
or improvement of mass and energy usage in paper and pulp
mills; research, development and/or design services in the
field of technology, biotechnology, science, chemistry,
biochemistry and/or engineering, in the paper and/or pulp
industries; research, development and/or design services
relating to and/or connected with the manufacture,
production, processing, treatment, extraction, purification
and/or separation of chemicals, prehydrolysate liquor,
xylose, furfural, butyl acetate and/or lignin in the paper
and/or pulp industries; research, development and/or design
services relating to and/or connected with the conversion,
manufacture, production, processing, treatment, extraction,
purification and/or separation of impure process streams
produced by paper and pulp mills into chemical precursors;
research, development and/or design services relating to
and/or connected with the manufacture, production,
processing, treatment, extraction, purification and/or
separation of xylose for use in the production of xylitol;
research, development and/or design services relating to
and/or connected with the optimisation or improvement of
mass and energy usage in paper and pulp mills; research,
development and/or design services relating to and/or
connected with industrial plant, machinery and/or processes,
in the paper and/or pulp industries; chemical and/or
biochemical analysis, research and/or engineering services
in the paper and/or pulp industries; engineering and/or
engineering design services in the field of technology,
biotechnology, science, chemistry and/or biochemistry, in
the paper and/or pulp industries; engineering and/or
engineering design services relating to and/or connected
with the manufacture, production, processing, treatment,
extraction, purification and/or separation of chemicals,
prehydrolysate liquor, xylose, furfural, butyl acetate
and/or lignin in the paper and/or pulp industries;
engineering and/or engineering design services relating to
and/or connected with the conversion, manufacture,
production, processing, treatment, extraction, purification
and/or separation of impure process streams produced by
paper and pulp mills into chemical precursors; engineering
and/or engineering design services relating to and/or
connected with the manufacture, production, processing,
treatment, extraction, purification and/or separation of
xylose for use in the production of xylitol; engineering
and/or engineering design services relating to and/or
connected with the optimisation or improvement of mass and
energy usage in paper and pulp mills; engineering and/or
engineering design services relating to and/or connected
with industrial plant, machinery and/or processes in the
paper and/or pulp industries; industrial analysis and/or
research services in the field of technology, biotechnology,
science, chemistry, biochemistry and/or engineering, in the
paper and/or pulp industries; industrial analysis and/or
research services relating to and/or connected with the
manufacture, production, processing, treatment, extraction,
purification and/or separation of chemicals, prehydrolysate
liquor, xylose, furfural, butyl acetate and/or lignin in the
paper and/or pulp industries; industrial analysis and/or
research services relating to and/or connected with the
conversion, manufacture, production, processing, treatment,
extraction, purification and/or separation of impure process
streams produced by paper and pulp mills into chemical
precursors; industrial analysis and/or research services
relating to and/or connected with the manufacture,
production, processing, treatment, extraction, purification
and/or separation of xylose for use in the production of
xylitol; industrial analysis and/or research services
relating to and/or connected with the optimisation or
improvement of mass and energy usage in paper and pulp
mills; consultancy, advisory, support and/or information
services relating to or connected with the aforementioned
services. Licensing of technology in the field of science,
biotechnology, chemistry, biochemistry and/or engineering,
in the paper and/or pulp industries; licensing of technology
relating to and/or connected with the manufacture,
production, processing, treatment, extraction, purification
and/or separation of chemicals, prehydrolysate liquor,
xylose, furfural, butyl acetate and/or lignin in the paper
and/or pulp industries; licensing of technology relating to
and/or connected with the conversion, manufacture,
production, processing, treatment, extraction, purification
and/or separation of impure process streams produced by
paper and pulp mills into chemical precursors; licensing of
technology relating to and/or connected with the
manufacture, production, processing, treatment, extraction,
purification and/or separation of xylose for use in the
production of xylitol; licensing of technology relating to
and/or connected with the optimisation or improvement of
mass and energy usage in paper and pulp mills; licensing of
manufacturing technology and/or manufacturing processes in
the field of science, biotechnology, chemistry, biochemistry
and/or engineering, in the paper and/or pulp industries;
licensing of manufacturing technology and/or manufacturing
processes relating to and/or connected with the manufacture,
production, processing, treatment, extraction, purification
and/or separation of chemicals, prehydrolysate liquor,
xylose, furfural, butyl acetate and/or lignin in the paper
and/or pulp industries; licensing of manufacturing
technology and/or manufacturing processes relating to and/or
connected with the conversion, manufacture, production,
processing, treatment, extraction, purification and/or
separation of impure process streams produced by paper and
pulp mills into chemical precursors; licensing of
manufacturing technology and/or manufacturing processes
relating to and/or connected with the manufacture,
production, processing, treatment, extraction, purification
and/or separation of xylose for use in the production of
xylitol; licensing of manufacturing technology and/or
manufacturing processes relating to and/or connected with
the optimisation or improvement of mass and energy usage in
paper and pulp mills; licensing of intellectual property
and/or intellectual property rights in the field of
technology, biotechnology, science, chemistry, biochemistry
and/or engineering, in the paper and/or pulp industries;
licensing of intellectual property and/or intellectual
property rights relating to and/or connected with the
manufacture, production, processing, treatment, extraction,
purification and/or separation of chemicals, prehydrolysate
liquor, xylose, furfural, butyl acetate and/or lignin in the
paper and/or pulp industries; licensing of intellectual
property and/or intellectual property rights relating to
and/or connected with the conversion, manufacture,
production, processing, treatment, extraction, purification
and/or separation of impure process streams produced by
paper and pulp mills into chemical precursors; licensing of
intellectual property and/or intellectual property rights
relating to and/or connected with the manufacture,
production, processing, treatment, extraction, purification
and/or separation of xylose for use in the production of
xylitol; licensing of intellectual property and/or
intellectual property rights relating to and/or connected
with the optimisation or improvement of mass and energy
usage in paper and pulp mills; licensing of industrial
property and/or industrial property rights in the field of
technology, biotechnology, science, chemistry, biochemistry
and/or engineering in the paper and/or pulp industries;
licensing of industrial property and/or industrial property
rights relating to and/or connected with the manufacture,
production, processing, treatment, extraction, purification
and/or separation of chemicals, prehydrolysate liquor,
xylose, furfural, butyl acetate and/or lignin in the paper
and/or pulp industries; licensing of industrial property
and/or industrial property rights relating to and/or
connected with the conversion, manufacture, production,
processing, treatment, extraction, purification and/or
separation of impure process streams produced by paper and
pulp mills into chemical precursors; licensing of industrial
property and/or industrial property rights relating to
and/or connected with the manufacture, production,
processing, treatment, extraction, purification and/or
separation of xylose for use in the production of xylitol;
licensing of industrial property and/or industrial property
rights relating to and/or connected with the optimisation or
improvement of mass and energy usage in paper and pulp
mills; licensing of patents, confidential information,
technical information and/or know-how in the field of
technology, biotechnology, science, chemistry, biochemistry
and/or engineering in the paper and/or pulp industries;
licensing of patents, confidential information, technical
information and/or know-how relating to and/or connected
with the manufacture, production, processing, treatment,
extraction, purification and/or separation of chemicals,
prehydrolysate liquor, xylose, furfural, butyl acetate
and/or lignin in the paper and/or pulp industries; licensing
of patents, confidential information, technical information
and/or know-how relating to and/or connected with the
conversion, manufacture, production, processing, treatment,
extraction, purification and/or separation of impure process
streams produced by paper and pulp mills into chemical
precursors; licensing of patents, confidential information,
technical information and/or know-how relating to and/or
connected with the manufacture, production, processing,
treatment, extraction, purification and/or separation of
xylose for use in the production of xylitol; licensing of
patents, confidential information, technical information
and/or know-how relating to and/or connected with the
optimisation or improvement of mass and energy usage in
paper and pulp mills; consultancy, advisory, support and/or
information services relating to or connected with the
aforementioned services.
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 produce a reaction mixture comprising a C3-8 alkyl ester; (b) separating the reaction mixture into an aqueous phase and an organic phase comprising said C3-8 alkyl ester; and (c) recovering said C3-8 alkyl ester and/or lignin.
3-08 alkyl ester. The product of step (b) may be further processed using an optional step: (c) reacting said hemicellulose-derived monosaccharide obtained from step (b) with a metal hydroxide or a quaternary ammonium hydroxide to produce a metal lactate or quaternary ammonium lactate.
C07C 67/08 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
C08B 37/00 - Preparation of polysaccharides not provided for in groups Derivatives thereof
C07C 51/00 - Preparation of carboxylic acids or their salts, halides, or anhydrides
C13K 13/00 - Sugars not otherwise provided for in this class
A process for producing lactic acid is provided. The process comprises (a) reacting a stream rich in saccharide with sodium hydroxide in the presence of water to produce a reaction mixture comprising sodium lactate; (b) reacting at least a portion of the sodium lactate with HCl to produce lactic acid and sodium chloride; (c) converting at least a portion of the sodium chloride to chlorine and sodium hydroxide; and (d) recycling at least a portion of the sodium hydroxide produced in step (c) to step (a). Also provided are processes for the production of alkyl lactate, oligomeric lactic acid, lactide, alkyl lactyllactate, poly-lactic acid, propylene glycol and acrylic acid.
C07C 67/08 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
C07C 51/295 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with inorganic bases, e.g. by alkali fusion
C07C 51/41 - Preparation of salts of carboxylic acids by conversion of the acids or their salts into salts with the same carboxylic acid part
