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TESTING OF HYDROTREATED VEGETABLE OIL AS BIOCOMPONENT IN DIESEL FUEL
Maja Fabulić Ruszkowski
; INA d.d. Zagreb
Sanda Telen
; INA d.d. Zagreb
Vesna Kučan Polak
; INA d.d. Zagreb
Ivana Čović Knezović
; INA d.d. Zagreb
Ana Erceg
; INA d.d. Zagreb
Vinko Rukavina
; INA d.d. Zagreb
Sažetak
INA as a motor fuels distributor has an obligation to put on the Croatian market a mandatory share of biofuels in the transport energy mix according to the Act on Market of Biofuels for Road Transport. INA started to use fatty acid methyl esters (FAME) as biocomponent for diesel fuel blending in 2011. The significant increase of biofuels energy share, in next few years requires the introduction of a new type of biocomponents that are suitable for processing in INA refineries. Hydrotreated vegetable oil (HVO) is one type of renewable synthetic fuels, the so called drop-in fuel. HVO is used as a high quality diesel blending component, or as standard diesel fuel, very similar to the gas to liquid (GTL) and biomass to liquid (BTL) fuels. The use of HVO enables better vehicle performance and emission reduction compared with conventional diesel. It is practically aromatics and sulphur-free and has high cetane number. Therefore, HVO shows superior quality compared with convention diesel and FAME. An additional interesting property is its very low density compared to common diesel fuel because INA is occasionally processing the naphthenic West African grades with gas oils of a very high density.
The possibility of blending of the HVO component with diesel fuel and iwith the mixture of diesel fuel and FAME was tested in order to meet HRN EN 590 standard for diesel fuel and to examine the impact of HVO addition on important diesel's properties. A maximum amount of 18 vol. % of HVO was added in tested diesel fuel in order to meet EN 590 standard regarding density value. Density decrease and a significant cetane number increase were noticed in blends. In the tested blend of HVO and diesel fuel with FAME the same density like in diesel fuel and cetane number increase like in the HVO and diesel fuel blend were noticed. Distillation range did not change significantly in both types of blends. The added HVO has not significantly influenced the improvement of low temperature properties (cloud point (CP), cold filter plugging point (CFPP)) of all tested blends. The slightly better response of cold flow improver (CFI) additive and achieved better operability was noticed in blend with HVO, diesel fuel and FAME.
Considering the results obtained in INA, blending of HVO with diesel fuel and FAME is more acceptable because of achieving better operability and high cetane number.
The results obtained for two blends analyzed in laboratory are compared with results calculated by commercial software which is used for estimation of motor fuel properties. A relatively good agreement was achieved regarding the main estimated properties expect the cetane number. It can be concluded that software could be successfully used for predicting the behavior of blend of HVO with diesel fuel or with diesel fuel and FAME mixture, apart from cetane number. It can be used for obtaining fast results, selection of targeted blending recipe and the laboratory analysis. The testing of HVO blending with diesel will be continued in order to optimize the recipe and to examine the influence on low temperature properties.
Ključne riječi
biocomponent; hydrotreated vegetable oil (HVO); drop-in fuel
Hrčak ID:
132734
URI
Datum izdavanja:
18.12.2014.
Posjeta: 3.570 *