[Q&A Question 127] 2016.08.25
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【Q&A Question 127】August 25, 2016: What are the respective effects of hydrogen partial pressure on jet fuel products and diesel products? The answer key will be available after responding; scoring is based on addressing the key points. The effect of hydrogen partial pressure on jet fuel products is that the lower the hydrogen partial pressure, the lower the smoke point. The effect of hydrogen partial pressure on diesel products is that the lower the hydrogen partial pressure, the lower the cetane number.
An increased hydrogen partial pressure facilitates the progression of the hydrogenation reaction to the right, thereby enabling a higher degree of purification as well as more thorough desulfurization and denitration. In particular, the ring-opening of aromatics is significantly affected by the hydrogen partial pressure; increasing this pressure allows the processing of feedstocks with higher dry points and lower quality, resulting in better product quality. For example, reducing the aromatic content in aviation fuel can increase its smoke point. Generally, only high-pressure hydrocracking can be used to produce aviation fuel. At high hydrogen partial pressures, diesel has a high cetane number and a high degree of isomerization ；
Better product quality can be achieved; for example, reducing the aromatic content in aviation fuel can increase its smoke point. Generally speaking, only high-pressure hydrocracking can be used to produce aviation fuel. At high hydrogen partial pressures, diesel has a high cetane number and a high degree of isomerization.
The effect of hydrogen partial pressure on jet fuel products is that the lower the hydrogen partial pressure, the lower the smoke point. The effect of hydrogen partial pressure on diesel products is that the lower the hydrogen partial pressure, the lower the cetane number.
The effect of hydrogen partial pressure on the quality of aviation kerosene: as the hydrogen partial pressure decreases, the smoke point decreases. The effect of hydrogen partial pressure on diesel product quality: as the hydrogen partial pressure decreases, the cetane number decreases.
As the hydrogen partial pressure increases, the degree of hydrogenation increases. For diesel, the cetane number increases. As for aviation fuel, I’m not sure.
The higher the hydrogen partial pressure, the higher the cetane number of diesel, the lower the sulfur content, and the lower the smoke point of aviation fuel
The effect of hydrogen partial pressure on jet fuel products is that the lower the hydrogen partial pressure, the lower the smoke point. The effect of hydrogen partial pressure on diesel products is that the lower the hydrogen partial pressure, the lower the cetane number.
Cracking conversion, product distribution, and product properties
The lower the hydrogen partial pressure, the lower the smoke point. The effect of hydrogen partial pressure on diesel products is that the lower the hydrogen partial pressure, the lower the cetane number