Method of Cooling a Torrefied Material

摘要

The invention relates to a method and a system for efficient cooling of torrefied material which also increases energy yield and hydrophobicity of the torrefied product and decreases clogging of the cooling device. The method includes that at least a part of cooled torrefied material is mixed-back with hot torrefied material before the hot material is introduced into a cooling device for further cooling of the torrefied material.

主权项

1. A torrefaction method, comprising the steps of:
a) subjecting an optionally pretreated biomass to torrefaction to produce a torrefied material and torrefaction gases; b) cooling and optionally compacting the torrefied material from step a); c) mixing at least part of the material from step b) with at least part of the torrefaction gases and/or torrefied material from step a) such that torrefaction gas components condense on the material from step b).