Method for high energy density biomass-water slurry

C - Chemistry – Metallurgy – 01 – B

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C01B 3/36 (2006.01) B09B 1/00 (2006.01) C10J 3/00 (2006.01)

Patent

CA 2657376

An energy efficient process for converting biomass into a higher carbon content, high energy density slurry. Water and biomass are mixed at a temperature and under a pressure that are much lower than in prior processes, but under a non-oxidative gas, which enables a stable slurry to be obtained containing up to 60% solids by weight, 20 - 40% carbon by weight, in the slurry. The temperature is nominally about 200°C under non-oxidative gas pressure of about 150 psi, conditions that are substantially less stringent than those required by the prior art.

L'invention concerne un procédé efficace du point de vue énergétique pour transformer une biomasse en une pâte à teneur accrue en carbone et densité énergétique accrue. L'eau et la biomasse sont mélangées à une température et sous une pression qui sont bien inférieures à celles utilisées dans des procédés antérieurs, mais sous un gaz non oxydant, ce qui permet d'obtenir un pâte stable contenant jusqu'à 60 % de solides par poids, de 20 à 40 % de carbone par poids. La température est nominalement d'environ 200 °C sous une pression de gaz non oxydant d'environ 150 psi, ces conditions étant sensiblement moins rigoureuses que celles requises par les procédés de l'art antérieur.

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