Blending of coking feedstock with FCC clarified oil
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Can 1. Incorporating FCC clarified oil into the coking feedstock be used to reduce the yield of petroleum coke?； 2. Produce high-quality needle coke using FCC clarified oil or other heavy oils. Is the feasibility of these two measures? What benefits can be achieved?
Reply to 1# LoveToAsk: The oil slurry contains over 40% of aromatic compounds with three or more rings. It is very difficult to thermally crack these aromatic compounds through coking; on the contrary, at high temperatures in the coke tower, these aromatic compounds tend to polymerize and form coke. Therefore, I believe that the yield of light oil obtained from processing this oil slurry will not increase – it might even decrease slightly； However, the quality of coke will improve significantly; especially in the case of residue oils with high amounts of asphaltene carbon, which tend to produce pellet coke, blending them with clarified slurry can reduce or eliminate the formation of pellet coke