I would like to ask why the control is such that the dry point of reformed gasoline should not exceed 220°C in principle
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I would like to ask why the control is such that the dry point of reformed gasoline should not exceed 220°C in principle If the dry point of reformed gasoline is between 205–220°C, can it still be used as a component in gasoline? Thank you.
The dry point (final boiling point) specified in the standards for gasoline used in finished vehicles shall not exceed 205 degrees. When the dry point of a component used in gasoline is higher than 205 degrees, it is necessary to determine whether the proportion of that component in the mixture is sufficient to affect the dry point of the finished gasoline. Additionally, if the dry point of the reformed crude oil exceeds the standard, an appropriate fractionation of the oil can be carried out to bring the dry point within the specified range.
Why not simply keep it below 205°C? If the oil is further subjected to appropriate fractionation to meet the dry point requirements, won’t the cost increase?
The reforming process is one that makes the oil heavier; the extent of this increase depends on factors such as the feedstock, reaction conditions, and catalyst activity. It is difficult to control the properties of the resulting product with such precision, especially in the case of continuous reforming, where it is even harder to control the characteristics of the produced oil. Therefore, when the proportion of reformed distillate as a component of gasoline is high, care must be taken in controlling the dry point; it is best to perform fractionation.
I still don’t understand why the dry point of reformed gasoline needs to be controlled at above 205 degrees; moreover, it’s not easy to lower the dry point through blending.
In fact, the daily control should still remain at no more than 205°C; it’s just difficult to maintain this level and it’s easy to exceed it. Therefore, the limit is relaxed – no penalties are imposed if it’s exceeded – which is why it is said that \"in principle, the temperature should not exceed 220°C\".
Chinese writing is profound and complex; take your time to understand it!
Is it from foreign literature? I remember that the dry point of gasoline in the US is 220
Could you provide the gasoline product standards in the United States that you remember? Let everyone take a look to see if it’s that high.
Controlling the composition of gasoline by its dry point facilitates its evaporation, thereby ensuring continuous engine operation. Reformulated gasoline has an increased density and higher dry point due to the dehydrogenation of its raw materials; after all, it is also used as a component in gasoline blends. Therefore, to be sold, it must meet certain **standards, and compliance with these standards is of primary importance when considering profits.