| abstract |
When treating biomass by catalytic cracking using a fluid catalytic cracking device having a reaction zone, a separation zone, a stripping zone and a regeneration zone, in the reaction zone, the raw material oil containing biomass is converted into 10 to 10 ultrastable Y-type zeolite. Using a catalyst containing 50% by mass, the outlet temperature of the reaction zone is 580 to 680 ° C., the catalyst / oil ratio is 10 to 40 wt / wt, the reaction pressure is 1 to 3 kg / cm 2 G, and the raw material oil and catalyst in the reaction zone In the regeneration zone, then the catalyst is treated with a regeneration zone temperature of 640-720 ° C., a regeneration zone pressure of 1-3 kg / cm 2 G, The treatment is performed under the condition that the oxygen concentration in the exhaust gas at the outlet of the regeneration zone is 0 to 3 mol%. |