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US 8,460,406 B2Granted
Process for preparing a feed containing biomass intended for subsequent gasification
AssigneeIfp Energies Nouvelles
InventorsEric Lemaire, Nicolas Boudet
Life of this patent
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Abstract
The process of the invention describes a set of steps for preparing a solid lignocellulosic biomass type feed, alone or mixed with a liquid hydrocarbon phase with a view to supplying a unit for gasification of said feed. The various steps include drying, torrefaction, milling and constituting a suspension of particles of biomass in a hydrocarbon cut.
Claims16
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.
1 more element
Dependencies are inferred from the claim text.