Process for converting anhydrosugars to glucose and other...

C - Chemistry – Metallurgy – 13 – K

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C13K 1/02 (2006.01) C07H 1/00 (2006.01) C12P 19/02 (2006.01)

Patent

CA 2642500

A process is provided for producing glucose and other fermentable sugars from a liquid mixture containing anhydrosugars. One example of a process encompasses: 1) water extraction of a anhydrosugar-rich fast-pyrolysis bio-oil fraction that constitutes a residual after removal of volatile impurities, 2) further purification of said anhydrosugar-rich fraction, and 3) solid-phase catalytic hydrolysis of the anhydrosugars to yield glucose and other fermentable sugars. An exemplary application of the process is in the production of ethanol and other sugar-based fermentation products from bio-oil generated via fast pyrolysis of low-cost, high-availability lignocellulosic biomass resources.

La présente invention concerne un procédé de production de glucose et d'autres sucres fermentables à partir d'un mélange liquide contenant des sucres anhydres. Un exemple d'un procédé comprend: 1) l'extraction de l'eau d'une fraction de bio-huile par pyrolyse rapide riche en sucres anhydres qui constitue un résidu après l'élimination d'impuretés volatiles; 2) une épuration de ladite fraction riche en sucres anhydres; et 3) une hydrolyse catalytique en phase solide des sucres anhydres afin d'obtenir du glucose et d'autres sucres fermentables. Une application représentative du procédé est constituée par la production d'éthanol et d'autres produits de fermentation à base de sucre à partir de bio-huile générée par la pyrolyse rapide de ressources de biomasse lignocellulosique à faible coût et à disponibilité élevée.

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