Patent ID: 8492600

Claim:
A process for producing liquid products from biomass comprising the steps of: a) hydropyrolyzing biomass in a hydropyrolysis reactor vessel containing molecular hydrogen and a deoxygenating catalyst, producing a hydropyrolysis reactor output comprising CO 2 , CO and C 1 -C 3 gas, a partially deoxygenated hydropyrolysis product and char; b) removing said char from said partially deoxygenated hydropyrolysis product; c) hydroconverting said partially deoxygenated hydropyrolysis product in a hydroconversion reactor vessel using a hydroconversion catalyst in the presence of the CO 2 , CO and C 1 -C 3 gas generated in step a), producing a substantially fully deoxygenated hydrocarbon liquid and a gaseous mixture comprising CO, CO 2 , and light hydrocarbon gases (C 1 -C 3 ); d) steam reforming at least a portion of said gaseous mixture, producing reformed molecular hydrogen; and e) introducing said reformed molecular hydrogen into said reactor vessel for hydropyrolizing said biomass, wherein steps a) and c) are operated at conditions under which about 30-70% of oxygen in said biomass is converted to H 2 O and about 30-70% of said oxygen is converted to CO and CO 2 .