METHOD AND DEVICE FOR BIOMASS GASIFICATION Russian patent published in 2021 - IPC C10J3/02 C10J3/20 C10K1/32 

FIELD: chemistry.

SUBSTANCE: invention relates to a method (10) for the gasification of biomass (B), as well as to a device intended for this purpose (11). The biomass (B) is fed to the gasification device (11). At the first technological stage (12, 12i, 12 ii), an untreated gas (R) and a carbon-containing residue (RK) are obtained from the introduced biomass (B). The carbon-containing residue (RK) undergoes partial gasification with the gaseous components of the crude gas (R) in the gasification zone (ZV) at the second technological stage (13). As a result, activated carbon (AG) and hot product gas (PH) are formed. Per unit mass of the introduced biomass (B), based on the anhydrous-ashless initial state (waf), activated carbon (AC) is obtained in an amount between a minimum of 0.02 units of mass and a maximum of 0.1 units of mass. Activate d carbon (AG) and hot product gas (PH) are taken from the gasification zone (ZV), introduced into the cooling zone (ZK), and co-cooled in the cooling zone (ZK) at the third technological stage (14). The process gas temperature (PH) in the cooling zone (ZK) remains above the lower limit temperature, which is higher than the dew point temperature of the product gas (PH). The adsorption process occurring during the combined cooling of the activated carbon (AG) and the product gas (PH) leads to the fact that during cooling the resin from the hot product gas (PH) is deposited on the activated carbon (AC). Due to this, after the third technological stage (14), a purified gas (PR, PA) is obtained, which essentially does not contain resin. The resin-enriched activated carbon (AC) can be at least partially burned to heat the heating zone (ZE) and/or the gasification zone (ZV).

EFFECT: capability to process various biogenic waste, regardless of the particle size, increased process efficiency, reduced heat losses.

15 cl, 3 dwg