Hydropyrolysis of biomass for producing high quality liquid...

C - Chemistry – Metallurgy – 10 – B

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C10B 51/00 (2006.01) C01B 3/34 (2006.01)

Patent

CA 2757651

A self-sustaining process for producing high quality liquid fuels from biomass in which the biomass is hydropyrolyzed in a reactor vessel containing molecular hydrogen and a deoxygenating catalyst, producing a partially deoxygenated hydropyrolysis liquid, which is hydrogenated using a hydroconversion catalyst, producing a substantially fully deoxygenated hydrocarbon liquid and a gaseous mixture comprising CO and light hydrocarbon gases (C1- C3). The gaseous mixture is reformed in a steam reformer, producing reformed molecular hydrogen, which is then introduced into the reactor vessel for hydropyrolizing the biomass. The deoxygenated hydrocarbon liquid product is further separated to produce diesel fuel, gasoline, or blending components for gasoline and diesel fuel.

La présente invention concerne un procédé autonome pour la production de combustibles liquides à partir de la biomasse selon lequel la biomasse est soumise à une hydropyrolyse dans une cuve de réacteur contenant de l'hydrogène moléculaire et un catalyseur de désoxygénation, produisant un liquide de pyrolyse partiellement désoxygéné, qui est hydrogéné au moyen d'un catalyseur d'hydroconversion, permettant d'obtenir un liquide de pyrolyse sensiblement entièrement désoxygéné et un mélange gazeux comprenant du CO et des gaz hydrocarbonés légers (C1 C3). Le mélange gazeux est reformé dans un reformeur à vapeur, produisant de l'hydrogène moléculaire reformé, qui est ensuite introduit dans la cuve de réacteur pour l'hydropyrolyse de la biomasse. Le produit liquide désoxygéné est ensuite séparé pour produire du carburant diesel et de l'essence, des constituants de mélange pour de l'essence et du carburant diesel.

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