Diesel flash point issue
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I would like to ask for advice: recently, the flash point of the diesel I produce has always been below room temperature, although the boiling range is fine – the initial boiling point is around 150 degrees or higher, and the water content is between 200-300 PPM. Even after dehydration in the laboratory, the flash point remains low, at around 30-40 degrees. In the past, under this same process, the flash point was above 50 degrees, and there were no issues with separating the gasoline components; the boiling ranges were properly separated without any overlap. I hope experts can help analyze the reason for this!
The initial boiling point is 150, indicating the presence of gasoline components in the diesel; a clear separation has not been achieved. Try increasing the reflux rate
What device is used to produce diesel? There should be components of gasoline
Agreed, let’s try around 180 as the initial value
The flash point is highly related to the 10% cut; it is recommended to raise the initial boiling point
The initial boiling point is a bit low; the diesel contains gasoline components
Diesel products contain light components. Optimize the operating conditions of the side-line stripping unit (in hydrocracking units) or the distillation column (in refining units), through methods such as adjusting reflux and optimizing the top temperature of the column.