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Calculating high cetane 300-400° F. cut for diesel
02/08/2010
This article provides a basis for deciding whether to evaluate a new process scheme or alter an existing one with a view toward moving a 300-400° F. cut from gasoline to diesel fuel.OptionsAverage qualities for three options were calculated from a detailed gas chromatograph analysis of a reformer feed sample, along with octane and cetane numbers for individual hydrocarbons:1. If a 300-400° F. cut were taken from the crude unit and hydrodesulfurized to less than the 15-ppm spec for low-sulfur diesel fuel, the average cetane number would be 41.2. Extracting aromatics from the 300-400° F. leaves a premium diesel fuel blending component of 53 cetane number. The extracted aromatics...
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