Gas generation within a circulating fluidized bed (CFB)
Gas generation based upon the principle of a circulating fluidized bed of coal, biomass or residues under nearly atmospheric pressure conditions represents a cost-efficient and robust gasification technology.
It is mainly used for the generation of fuel and lean gas. As an example, applications in the cement and steel industry may be mentioned where the produced gas is used as a substitute for other fuel materials such as fuel gas or natural gas.
Other consumers use the non-cleaned gas for direct injection as fuel gas within the cement production process or for combustion in downstream units.
The use of biomass can allow for the achievement of a CO₂-neutral or even a CO₂-positive balance.
Interesting examples concerning this technology may be found in the References section.