Page 214 - Energy from Toxic Organic Waste for Heat and Power Generation

192 Energy from Toxic Organic Waste for Heat and Power Generation

smoke, 10%–21% decreased HC, 9%–16% decreased CO, and 14%–
23% decreased NO x levels have been observed compared to HOME-
producer gas (HCC) operation.
• In a producer gas fueled dual fuel engine, when optimum fuel oil frac-
tion is used in the HOME, cylinder pressure and heat release rates were
increased due to the improved fuel properties and mixing rates caused
by the marginal increase in ignition delay. Fuel oil fraction has higher
heating value and volatility than HOME. Thus, performance of dual fuel
engine was slightly increased because of rapid combustion of fuel blend
along with producer gas.
• As for as combustion characteristics are concerned, HOME+FO20-
producer gas operation resulted in decreased ignition delay and com-
bustion duration and increased cylinder pressure and improved heat
release rates were observed compared to HOME-producer gas (HCC)
operation.
• Future developments will concern about the selection of good bio-
mass and gasifier-engine operating parameters which still need to be
addressed.
On the whole, it is concluded that operating the HOME-producer gas
(RCC) fueled diesel engine with addition of fuel oil requires adequate
modifications in the existing diesel engine. Use of fuel oil in such a dual fuel
engine resulted in overall better engine performance with reduced emission
levels. It is a challenge to optimize the blend ratio and bowl geometry with
experimental approach.

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