Biomass power stations

Biomass power stations

Power is generated in grate firing systems and in fluidised bed processes (particularly in larger plants). Following biomasses are often used:

  • natural wood and wood residues
  • waste wood
  • straw, olive kernels and miscanthus sinensis reeds (elephant grass)

In power stations using natural and wood residues, the flue gases are dedusted and need only be partially desulphurised with (semi-) dry sorption processes.

On the other hand, waste wood is often coated with plastic, varnished or impregnated with wood preservatives. Consequently, the flue gas cleaning must also include a stage for removing PCDD/PCDF

Case history: Biomass power stations
Referencetimber industry
Firingfluidised bed
Fuelwood residues
Flue gas cleaningsemi-dry sorption
Sorption agentmilk of hydrated lime
Flue gas temperature150–160 °C
Gas volume flow272.000 m³/h
Filter area4.132 m²
A/C ratio1,1 m/min