Weekly Topic: Diesel and Gasoline Overlap and Deoxygenation – Issue 24, July 25–31, 2011

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There are weekly topic-related activities in the refining area; everyone is welcome to participate actively. We also hope that people will come up with more valuable topics, and the moderators will award rewards of 5-20 wealth points. Those who post excellently will receive a reward of 10 to 50 Wealth or an equivalent amount of Charm. Please do not hide your responses to this question. In the pursuit of efficiency, there are increasing demands for higher precision in oil separation; when a certain type of oil is valuable, we desire a higher yield from that oil. This leads to a conflict between the yield of gasoline and diesel on the one hand, and product quality control on the other. For example, since diesel is expensive, we try to lower its flash point as much as possible. The lower the dry point of gasoline, the better. When heavier components from gasoline end up in diesel, its flash point decreases and the yield increases. Can you still achieve the removal of volatile components from both gasoline and diesel in such a situation? What is the impact of diesel and gasoline cutting on yield? How can I ensure complete removal of impurities when I aim to increase the yield of a certain type of oil? What are the operational factors that have an influence, and how should they be adjusted? Taking the improvement of diesel yield and the reduction of gasoline yield as an example, the process unit is not limited; catalytic, coking, or mixed hydrorefining of gasoline and diesel can all be used.