Pyrolysis of biomass

The invention relates to a process for the pyrolysis of biomass, the process comprising the steps of a) providing the biomass, b) providing a salt, c) combining the biomass and the salt, d) feeding the combined biomass and salt to an extruder, e) heating the combined biomass and salt in the extruder, thereby melting the salt if solid, and dissolving and/or dispersing the biomass in the molten salt, f) transporting the mixture through the extruder at pyrolysis conditions, thereby creating liquid pyrolysis products, gases, and char, g) removing the liquid pyrolysis products, gases, char and salt from the extruder, and h) separating the liquid pyrolysis products from the salt, the gases and the char.