LIGNOCELLULOSIC MATERIAL ROASTING METHOD AND UNIT Russian patent published in 2014 - IPC C10B53/02 C10L5/44 C10L9/08 C10B49/02 

FIELD: heating.

SUBSTANCE: inventions can be used for the lignocellulosic material processing. The lignocellulosic material roasting method involves drying of the lignocellulosic material in a dryer (2). The dried lignocellulosic material is supplied to a roasting reactor (5), where a reaction is performed at the pressure of 1 to 50 bars and at a temperature of 100 to 1000°C with the formation of the roasted biomass and roasting gas. The roasting gas is returned to the roasting reactor (5) via pipelines (7). The roasted biomass is cooled in a cooler (29) operating at the absence of oxygen and containing an inert gas supply line (17). Additional inert gas is supplied to the cooler (29) as well. The inert gas is supplied from the cooler (29) in a flow (31) to a cyclone (32), where it is separated from solid particles, and then, it is returned to the cooler in a flow (36) and to the roasting reactor (5) in a flow (18).

EFFECT: inventions allow increasing the operating safety of a unit, its efficiency and environmental friendliness of the process.

20 cl, 1 dwg