Patent ID: 8460406
Filing Date: 2013-06-11
Classification: C10J,C10L,F23G,Y02E,Y02P

Abstract:
1. A process for pre-treatment of wood chip material, comprising at least the following steps: b) a primary drying step of said wood chip material carried out at a temperature of less than 250° C.; c) a step of torrefaction of the material from step b), said torrefaction being carried out at a temperature in the range of 250° C. to 320° C., with a residence time in the range 10 to 40 minutes; d) a step of milling the material from step c) to produce biomass particles with a diameter of less than 200 microns; e) a step of constituting a suspension of biomass particles from the milling step and optionally other solid hydrocarbon particles, in a liquid hydrocarbon cut having an initial boiling point above 350° C. and consists of a vacuum residue cut or a cut derived from a catalytic cracking unit or any mixture of said cuts, said suspension comprising 30% to 80% by weight of solid particles.