NOVELTY - Producing liquid biofuel from biomass, involves: gasifying the biomass (100) in a fluidized bed reactor at an elevated temperature to produce synthesis gas (200) and post processing at least part of the synthesis gas to the liquid biofuel, where the post processing involves: cooling the synthesis gas before filtering, filtering the synthesis gas to produce filtered synthesis gas, and reforming the filtered synthesis gas for decreasing the amount of tars and methane in the filtered synthesis gas.    USE - For producing liquid biofuel from biomass (claimed).    ADVANTAGE - The method provides biofuel with high yield; and cleans the synthesis gas by filtration before a reforming process to protect reformer-reactor and reformer-catalyst from fouling (deposition of particulate matter such as ash, soot, dust), thus improving the yield and stability of the reforming process.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a system for producing liquid biofuel from biomass comprising: a fluidized bed gasification reactor for gasifying biomass at an elevated temperature to produce synthesis gas, a post processing system arranged to produce the liquid biofuel from the synthesis gas, a cooling device arranged to cool the synthesis gas, a filtration unit arranged to filter the cooled synthesis gas to produce filtered synthesis gas, a reformer arranged to reform the filtered synthesis gas for decreasing the amount of tars and methane in the filtered synthesis gas, unit for conveying the synthesis gas from the gasification reactor to the cooling device, unit for conveying the cooled synthesis gas from the cooling device to the filtration unit, and unit for conveying the filtered synthesis gas to the reformer.    DESCRIPTION OF DRAWING(S) - The figure shows a process of gasifying biomass to produce synthesis gas in a process for producing liquid biofuel from solid biomass.    Biomass (100)    Containers (102, 106, 108, 132)    Synthesis gas (200)    Carbon dioxide (120)    Gasification reactor (150)