How to control the diesel flash point in a delayed coking fractionator
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To control the flash point of diesel, we have reduced the temperature at the top of the distillation tower from 110 degrees to around 105 degrees. However, as some water remains in the distillation tower, this can easily cause fluctuations in the liquid level in the diesel tank. It is also difficult to control the properties of diesel at 95 degrees; furthermore, the temperature distribution at various points related to light waxes and intermediate stages has decreased. Does anyone have any effective methods to lower the flash point of diesel?
Can’t we increase the baffle temperature slightly to lower the diesel extraction temperature?
The flash point of diesel is primarily controlled by the stripping steam; to lower the flash point, it is possible to increase the amount of stripping steam. The temperature in the distillation tower has a significant impact on the properties of diesel, such as its freezing point and cold filter plugging point.
Reduce the amount of stripping steam, lower the temperature at the exit of the heating furnace, reduce the top temperature of the tower, and increase the tower pressure appropriately
For the atmospheric and vacuum distillation unit, please turn to an expert; it’s the simplest thing when it comes to that unit
Coking doesn’t have a controlled flash point; only catalysis does. Besides, with such a low maximum temperature setting, the gasoline will definitely not meet the standards