Why does the reaction depth increase while the level of the reprocessed oil decreases?
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Why does the reaction depth increase while the level of the reprocessed oil decreases?
What device is it? Is it catalytic cracking?
Re-refined oil is an intermediate fraction; when the degree of reaction increases, part of this intermediate fraction cracks into lighter components or condenses into coke, resulting in a decrease in the liquid level.
An increase in reaction depth, simply put, refers to the two processes of decomposition and condensation reaching their extremes. Decomposition results in an increase in gases, while condensation leads to an increase in coke. As the depth increases, more heat is required for the reaction; more chemical bonds are broken, and the larger components become smaller, going through a process of becoming increasingly smaller. The oil slurry has a complex composition, with high amounts of gums and asphalts, as well as many polycyclic aromatic hydrocarbons; only a small portion of it turns into diesel, so the level of the reprocessed oil decreases