In the present investigation, tar and particle
collection eciencies have been determined in the
following gas cleaning systems in dierent test
runs with raw gas from ®xed bed gasi®ers:
. a system of quench and sand bed ®lter with a
coarse and a ®ne ®lter
. a wash tower
. two dierent fabric ®lters
. a rotational particle separator (RPS)
. a ®xed bed adsorber for tar removal.