The problem with diesel
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Hello everyone, I would like to ask how different grades of diesel are produced? **Adjustment of the art, or something else? What can be used to adjust the labels? For example, if -10 has already been produced, can something be added to adjust it to -20?
The direct method for producing diesel of different grades is regulated by the temperature at the distillation outlet of the distillation tower; fundamentally, it is regulated by the reaction temperature in the reactor. Diesel products can have their freezing point reduced by adding antifreeze agents, although the extent of this reduction is limited. Moreover, antifreeze agents cannot lower the cold filter plugging point of diesel; therefore, when there is a large difference in the freezing points of diesel, it is not possible to adjust them by using such agents.
The rating for diesel is its freezing point, while for gasoline it’s the octane rating. The freezing point of diesel varies depending on the climate in different regions; for example, it differs between the north and the south
There is a new antifreeze that can lower both the freezing point and the cold filter plugging point. But it’s impossible to drop from below -10 to -20.
Antifreeze agents can lower the cold flow point of diesel, but it is difficult to reduce that of paraffin-based oils. And the amplitude is very small.
The diesel grade is indicated by the freezing point; for example, -10 grade diesel is suitable for temperatures between -4 and -5 degrees Celsius. Methods to lower the dew point of diesel include hydrorefining and modifying the solidifying agents.
I’m not sure which anticoagulant is good; please recommend one.