Effect of reaction temperature in catalytic cracking units on gasoline octane number
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The octane rating of catalyzed gasoline is typically around 91-92. So, what is the actual impact of the temperature at the outlet of the lift pipe in the catalytic unit on the octane rating of gasoline? Feel free to discuss this. .
A catalysis-related question posed in the hydrogenation section is really tough to answer
The conditions for catalytic cracking reactions are, one, an appropriate temperature, and the other, the number of catalyst active sites per unit of the feedstock after it has been properly atomized. When the latter is constant, increasing the temperature is beneficial for the catalytic cracking reaction. In other words, the reaction depth is large, resulting in more thorough cracking. The catalytic cracking reaction is essentially a reaction that produces olefins, and there is a positive correlation between the olefin content and the octane number. In short, other conditions remaining constant, increasing the temperature raises the octane rating; as for the extent of this increase, it depends not only on temperature but also greatly on the properties of the raw materials themselves