Patent ID: 9725653
Date: 2017-08-08
CPC Classifications: B01J,C10B,C10C,C10G,C10L,Y02E,Y02P

Claim:
1. A method for preparing oxygen-containing liquid fuel by catalytic conversion of bio-oil, comprising the following steps: thermally cracking biomass to produce bio-oil, wherein the bio-oil includes water-phase bio-oil and oil-phase bio-oil; separating the water-phase bio-oil from the oil-phase bio-oil; producing hydrogen from the oil-phase bio-oil by a chemical-chain method; providing the hydrogen produced from the oil-phase bio-oil as a hydrogen source to the water-phase bio-oil; carrying out a two-step catalytic hydrogenation of the water-phase bio-oil to produce a hydrogenated product, wherein the two-step catalytic hydrogenation comprises (i) a first step which takes place in a first slurry bed catalytic hydrogenation reactor maintained at a temperature of 120-160° C. and a pressure of 3-5 MPa and (ii) a second step which takes lace in a second slurry bed catalytic hydrogenation reactor maintained at a temperature of 200-300° C. and a pressure of 8-15 MPa, and wherein the first step and the second step take place in different slurry beds; and purifying the hydrogenated product to obtain oxygen-containing liquid fuel.