Blended coking wax oil
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Why do the yields of liquefied gas and gasoline decrease, while the yields of diesel and oil slurry increase, after catalytic units are fed with coker wax oil?
After catalytic units are fed with coker wax oil, in terms of the impact on the catalyst, the high content of basic nitrogen in coker wax oil leads to a decrease in catalyst activity, which results in lower conversion rates, reduced yields of light oils, and an increase in slurry； In terms of the composition of the four components in coker wax oil, it has a low content of saturated hydrocarbons and a high content of aromatics, as well as a low degree of crackability. Therefore, when more than a certain proportion of coker wax oil is blended in, it leads to a decrease in the yields of liquefied gas and gasoline, while the yields of diesel and oil slurry increase.
The alkaline nitrogen level is too high, and the catalyst is contaminated; that’s why such problems occur