hydrocracking
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The temperature rise in the hydrocracking and refining reactor is increasing, but the temperature in the cracking section remains unchanged; moreover, the conversion rate has decreased. What could be the reasons for this?
It is likely that there has been a significant change in the properties of the raw materials; the content of polycyclic aromatic hydrocarbons, as well as heavy components containing sulfur, nitrogen, and oxygen, has increased. As a result, the temperature rise in the refining reactor increases, and it becomes more difficult to break down these heavy components, which leads to a decrease in the cracking conversion rate