WAY OF WOOD TORREFACTION Russian patent published in 2017 - IPC C10B47/06 C10B53/02 C10L9/08 C10B49/02 

FIELD: timber conversional industry.

SUBSTANCE: way of wood torrefaction comprises the wood warming-up to 200°C in the airtight drying chamber, the following wood warm-up at a temperature of 200-300°C in the airtight torrefaction chamber, the torrefacated wood cooling-down inside the airtight atmosphere. At first the wood is sawed before the warming-up and then is ripped into wood blocks, the wood warm-up lasts for not less than 2 hours, the further wood warm-up in the torrefaction chamber lasts for 2.3-2.8 hours.

EFFECT: enhancement of process safety.

4 dwg, 1 tbl