Patent ID: 6808390
Filing Date: 2004-10-26
Classification: C01B,C10B,Y02E,Y02P

Abstract:
A process for carbonizing wood residues to produce charcoal, said wood residues including wood or woody-type particles of varying size and/or moisture content, the process including the steps of feeding the wood residue to a fluidized bed having a plurality of wood residue inlets, the wood or woody-type particles of varying size and/or dryness being fed to differing ones of the plurality of wood residue inlets according to an expected time for carbonization for said wood or woody-type particles, the fluidized bed including a bed of inert particulate material fluidized with or having injected therein a gas or gas mixture containing an oxidizing gas, carbonizing the wood residues in the fluidized bed under reaction conditions selected such that volatile components in the wood residues are removed during carbonization and are burned in or above the bed or in an afterburner to thereby supply the heat requirements for carbonization and separating charcoal from the inert particulate material.