cetane index


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cetane index

[′sē‚tān ‚in‚deks]
(chemical engineering)
An empirical method for finding the cetane number of a fuel based on API gravity and the mid boiling point.
References in periodicals archive ?
0015% sulfur by weight) and no less than a cetane index of 40.
The key product characteristics of Oryx GTL diesel that make it such a sought after product are its low density -- which falls outside of the European Automotive Diesel range - and high Cetane Index.
Because the results could not conclude which purification step is the most suitable for improving the quality of biodiesel, it will be necessary to determine other characteristics of biodiesel, like saponification, iodine, peroxide values, cetane index, water content, fatty acids methyl ester composition, product yield.
This reason being that higher cetane index due to the addition of biodiesel and the ethanol content due to the improved quality of fuel spray with blended fuels since the boiling point of ethanol is lower than that of neat diesel, higher reaction activity in the fuel rich zone due to the oxygenate of ethanol and the reduction in heat losses due to the lower flame temperature [17, 18, 26-29].
50 Norm ppm S) Cetane number, min 51 Cetane index, min 46 Density at 15[degrees]C, kg/[m.
From their study, a large improvement in the cetane index (from 36 in the feed to 53 at the end of the second stage) was observed in the co-processing oil whereas the cetane improvement in the (LCO) remained modest (from 30 in the feed to 43 at the end of the second stage).
The ASTM cetane index (C1) correlations (D976 and D4737) are commonly used to predict CN based on density and distillation data.
In comparison, the cetane index for petroleum diesel ranges from 40 to 52.
It also has naphtha content with low aromatic composition (below 10%), and high kerosene content and smoke point (60 or higher) and cetane index of 50-60.
From 364 various types of seeds commonly found in Thailand, 21 seed oil methyl esters have cetane index value higher than 60 and could be sources of BDF.
These address the sulfur content in motor fuels while increasing product volume and cetane index.
Also, when compared to traditional diesel fuels, RenDiesel fuel has higher hydrogen content, heating value and cetane index, making it very energy-efficient.