Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining
Patent
1993-03-09
1995-03-07
Naff, David M.
Sugar, starch, and carbohydrates
Processes
Carbohydrate manufacture and refining
536124, C13K 102, C07G 1700
Patent
active
053954556
ABSTRACT:
A process is described for the production of anhydrosugars such as levoglucosan (1,6-anhydro-.beta.-D-glucopyranose), from liquids obtained by the fast thermal pyrolysis of pretreated lignocellulosics or celluloses. In this process, the pyrolytic liquids containing the anhydrosugars are produced with a substantially reduced amount of lignin-derived components by using as feedstock materials which have been previously delignified and then pretreated, or by preferential oxidation of the lignin fraction of a pretreated biomass during pyrolysis. The preparation from pretreated biomass of pyrolytic liquors from which the lignin derived chemical products of fast pyrolysis are absent or in low concentrations permits simpler and more economical recovery of crystalline levoglucosan and other anhydrosugars, or a more economical preparation of readily fermentable aqueous sugar solutions therefrom. A new procedure for the recovery of crystalline levoglucosan from such solutions is described.
REFERENCES:
patent: Re12069 (1902-12-01), Classen
patent: Re12108 (1903-05-01), Classen
patent: 654518 (1900-07-01), Classen
patent: 707903 (1903-08-01), Classen
patent: 745675 (1903-12-01), Roth
patent: 985725 (1911-02-01), Cohoe
patent: 985726 (1911-02-01), Cohoe
patent: 2697702 (1954-12-01), Heritage et al.
patent: 3309355 (1967-03-01), Heritage et al.
patent: 3309356 (1967-03-01), Esterer
patent: 3374222 (1968-03-01), Peniston
patent: 3776897 (1973-12-01), Ikari et al.
patent: 3875317 (1975-04-01), Ferguson
patent: 4137395 (1979-01-01), Buck et al.
patent: 4281063 (1981-07-01), Tsao et al.
patent: 4351905 (1982-09-01), Clyde
patent: 4468256 (1984-08-01), Hinger
patent: 4880473 (1989-11-01), Scott et al.
patent: 4956458 (1990-09-01), Luo et al.
patent: 5023330 (1991-06-01), Gander et al.
patent: 5046514 (1991-09-01), Bolt
patent: 5188673 (1993-02-01), Clausen et al.
patent: 5252188 (1993-10-01), Stradal et al.
patent: 5270067 (1993-12-01), Underwood et al.
Majerski Piotr
Piskorz Jan
Radlein Desmond
Scott Donald S.
Energy Mines and Resources Canada
Meller Mike
Naff David M.
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