Abstract
The production of synthetic fuels from alternative sources has increased in recent years as a cleaner, more sustainable source of transport fuel is now required. The European Commission has outlined renewable energy targets pertaining to transport fuel which must be met by 2020. In response to these targets Ireland has committed, through the Biofuels Obligation Scheme of 2008, to producing 3% of transport fuels from biofuels by 2010 and 10% by 2020. In order to be suitable for sale in Europe, diesel fuels and biodiesels must meet certain European fuel specifications outlined in the EN 590:2009 standard. The aim of this paper was to prepare blends of varying proportions of synthetic diesel (Cyn-diesel) fuel, produced from the pyrolysis of plastic, vs regular fossil diesel. The flash point (°C) and cold filter plugging point (°C) of these blends as well as of the conventional petroleum diesel fuel were analysed in relation to compliance with the European fuel standard EN 590. The results confirmed that blending of Cyn-diesel with conventional petroleum diesel has a highly significant effect on the properties of the resulting fuel blend. The results show that by increasing the Cyn-diesel content of the blend, the flash point of the blend decreases and the cold filter plugging point increases. Furthermore, comparing the fuel blends to EN 590 specifications has highlighted significant trends. The cold filter plugging points of all of the fuel blends are in compliance with EN 590 specifications. However, only blends of up to, and including, 40% Cyn-diesel are in compliance with EN 590 specifications for flash point. This analysis shows that a blend of 40% Cyndiesel is in compliance with all of the EN 590 specifications examined, and as such could be placed on the European fuel market (provided that the blend meets the requirements for the other properties in the EN 590 specification). This finding highlights the potential for Cyn-diesel blends to be incorporated into the European and national renewable energy targets.
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