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Study examines effect of cetane improvers

01/05/2009
By ANGELA BRACKETT
An investigation of the effect of cetane improvers on diesel cetane number showed that diesel fuels have a low sensitivity to the additives.Hydrotreated straight-run gas oils from Ural crudes, and their blends with hydrotreated secondary gas oils like light cycle oil (LCO), heavy cycle oil (HCO), and visbreaker gas oil (VBGO), exhibited an increase of 0.28 cetane numbers at a 100-ppm cetane improver (2-ethyl hexyl nitrate) treating rate. This was typical for these diesel blends.Diesel cetaneAccording to the European diesel standard EN-590, diesel in the European Union must have a cetane number no lower than 51 and a cetane index no lower than 46. Cetane index is a correlation that predict...
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