Integrated pyrolysis and gasification of biomass

A method for converting biomass, comprising:

• exposing a feed comprising biomass to a fluidized bed comprising solid particles in a reactor under pyrolysis conditions to form i) a liquid pyrolysis product comprising pyrolysis oil, ii) char, coke, or a combination thereof, and iii) a gas phase pyrolysis product, at least a portion of the char, coke, or combination thereof being deposited on the solid particles;
• passing at least a portion of solid particles comprising deposited char, coke, or a combination thereof from the reactor into a gasifier;
• introducing an oxygen-containing stream and steam into the gasifier;
• exposing the at least a portion of the solid particles comprising deposited char, coke, or a combination thereof to partial oxidation conditions in the gasifier to form a gas phase gasifier product comprising CO and CO2, and partially gasified particles;
• and
• passing at least a portion of the partially gasified particles from the gasifier to the reactor.