The present study was undertaken with the objectives
to develop a filter system for a 20 kW engine
application and to test the filter. It was observed that
tar content in the gas ranged from 12.4 to 85
mg/m3
, which was considered on the higher side, in
some cases, compared from an accepted limit of 50
mg/m3
. The 20 kW cleaning and cooling system for
cleaning of producer gas was developed by calculating
the gas flow and maximum retention time in
the filter. The diameter of these three filters, viz.,
water scrubber, wet filter and dry filter was calculated
from retention time and velocity in the filter,
which was found to be 0.20, 0.40 and 0.50 m
respectively, with filter height of 0.80 m. The developed
filter was evaluated for reduction of tar in the
producer gas after cleaning. The tar content in the
producer gas after filtration by using the system
varies from 24 to 53.52 mg/m3
. The tar absorption
using this filter system was 99.35%, while the pressure
drop varied between 10 to 25 mm of the water
column. The system was also operated by coupling
with a small capacity IC engine. The diesel replacement
was found to be in the range of 65.66 %.