Reduction of NOx and PM from Diesel Engines by WPD Emulsified Fuel 2001-01-0152
Blending pyrolitic oil (or Waste Plastic Disposal) produced from household and industrial plastic wastes with Marine Heavy Fuel Oil (C.Oil) reduces the viscosity of the heavy oil significantly. The experimental results indicated that, the WPD mixing ratio of 20 vol.% reduces the experimental heavy fuel oil viscosity 90% from 177 cSt to 20 cSt at 50°C. The blended oil has been applied to a small size high-speed single-acting 4 stroke diesel engine (16 horsepower, 2,200rpm) without preheating the oil. However, NOx emission slightly increases so that the WPD emulsified fuel oil has been tested with the aid of capsule-typed additives. The experimental WPD emulsified fuel oil (WPD Emulsified F.O) of 10 and 20 vol.% water and 0.3 vol.% additives indicates stability and helps reduce NOx emission by 30 and 50%.
In order to compare with the NOx and particulate matter emission when WPD is not used, emulsified fuels, in which only water and heavy fuel oil were blended at 10:90 and 20: 80 volume ratios, were made with the aid of the same additive and applied to the engine. The experimental results have also shown a stable performance of the engine and a NOx reduction by 32% and 50% at the mixing ratios of 10:90 and 20:80 respectively.