The hydrogenation reaction lowers the flash point of oil products. By how much can your process reduce the flash point?
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The hydrogenation reaction lowers the flash point of oil products. By how much can your process reduce the flash point? The flash points of our diesel hydrogenation feedstocks and products differ by more than 15°C? Isn’t the loss too great?
Why is it said that an increase in flash point results in excessive losses?
The flash point of oils is primarily determined by the temperatures at the initial boiling point and the 5% point, which are controlled during distillation; it has little direct relation to whether hydrogenation is applied or not.
Fractionation tower component separation – isn’t the naphtha being exported?
The last edit to this post was made by qugd on 2022-10-24 at 10:50. An increase in the flash point indicates a reduction in the light components in diesel; these components may be removed from the diesel fraction during downstream distillation due to their low boiling points. As a result, the flash point rises, and the loss of diesel product may increase
Fractionation takes place in a stripping tower, using medium-pressure steam for stripping; the temperature at the top of the tower is generally around 200 degrees Celsius. This temperature is not closely controlled. However, the flash point of the refined diesel product can sometimes be quite low, around 65°C
The flash point of diesel fuel at around 65°C is already quite high. According to the GB 252 standard for “General Purpose Diesel Fuel”, the flash point requirement for diesel fuels graded 10# to -10# is “not less than 55°C”; for -35# diesel fuel, it is “not less than 45°C”.
An increase in the flash point indicates that there are fewer light components in the diesel – so how can it increase?
Hydrogenation of oils has nothing to do with flash point; the hydrogenation reaction can saturate unsaturated hydrocarbons
This post was last edited by qugd on 2022-10-24 at 10:51; a typo was corrected