The results of gasification process of dried sewage sludge and use of
generator gas as a fuel for dual fuel turbocharged compression ignition
engine are presented. The results of gasifying showed that during
gasification of sewage sludge is possible to obtain generator gas of a
calorific value in the range of 2.15 ? 2.59 MJ/m3. It turned out that the
generator gas can be effectively used as a fuel to the compression ignition
engine. Because of gas composition, it was possible to run engine with
partload conditions. In dual fuel operation the high value of indicated
efficiency was achieved equal to 35%, so better than the efficiency of 30%
attainable when being fed with 100% liquid fuel. The dual fuel engine version
developed within the project can be recommended to be used in practice in a
dried sewage sludge gasification plant as a dual fuel engine driving the
electric generator loaded with the active electric power limited to 40 kW
(which accounts for approx. 50% of its rated power), because it is at this
power that the optimal conditions of operation of an engine dual fuel powered
by liquid fuel and generator gas are achieved. An additional advantage is the
utilization of waste generated in the wastewater treatment plant.
Gas and Liquid Fuel Production from Non-edible/Unutilized Biomass by Catalytic Conversion