Process for gasifying biomass with tar adsorption

A process (10) for gasifying biomass (B), comprising:

• supplying biomass (B) to an apparatus (11) for gasification,
• generating a crude gas (R) and a carbonaceous residue (RK) from the supplied biomass (B) in a first process step,
• partially gasifying the carbonaceous residue (RK) with gas constituents of the crude gas (R) in a gasification zone (ZV) in a second process step, as a result of which activated carbon (AK) and a hot product gas (PH) are formed,
• removing between a minimum of 0.02 units of mass and a maximum of 0.1 units of mass of the activated carbon (AK) and the hot product gas (PH) from the gasification zone (ZV) per unit of mass of supplied biomass (B) with respect to a reference condition water-free and ash-free (waf),
• conveying the activated carbon (AK) and the hot product gas (PH) to a cooling zone (ZK), and
• conjointly cooling the activated carbon (AK) and the hot product gas (PH) in the cooling zone (ZK) in a third process step (14), so that an adsorption process takes place, wherein the activated carbon (MAK2) is enriched with tar from the hot product gas (PH) while cooling,
• supplying the product gas (PA, PR) that has been cleaned due to the adsorption process as fuel to an apparatus, and
• proportionally adapting an amount of the supplied biomass (MB) and an amount of the activated carbon (AK) removed from the gasification zone (MAK2) to performance requirements of the apparatus.