Catalytic cracking performance of feedstock oil
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As is well known, the cracking performance of catalytic feed oil is related to its properties; in other words, it depends on what proportion of saturated hydrocarbons, naphthenes, and aromatics it contains I would like to ask the experts here: is there any upper limit on the content of aromatic hydrocarbons? The Chido produced from my current crude oil slurry consists of 25% slurry, 26% diesel, 18% gasoline, and 9% liquefied gas; there is a lot of dry gas as well. Is this a typical characteristic of aromatic-based crude oils?
Such a product distribution seems quite rare! Are the other 22% coke and dry gas? If it’s not a catalyst issue, then there might be a problem with the raw materials themselves. Is it economically viable to process them in this way?
1. The yield of the slurry is adjusted based on its solid content; why is your slurry yield so high? If the liquid level at the bottom of the distillation tower is too high, the reaction temperature can be increased to enhance the degree of cracking as a remedy. Based on your material balance, a diesel yield of 26% indicates that the reaction conditions are not extremely harsh, so there is no need to remove large amounts of slurry from the system.
The density of my slurry is also quite high, around 1.08!
Have your raw materials been analyzed? A correlation analysis can be conducted, including the hydrogen-to-carbon ratio of the raw materials, followed by an analysis of the reasons to find appropriate solutions. Where is your raw material being delivered to you?
It is related, but not the product distribution. Try using a cracking catalyst with good selectivity. By the way, is your raw material M100? This post was last edited by ** the years on 2007-12-25 21:06】
It should be, the specific gravity is 0.93, the residue content is 6.3, the sulfur content is 0.46%, and the alkaline nitrogen level is 1550; the heavy metal content is very high. Now the reason has finally been identified – a test was conducted at Zhoucun Catalyst Factory, and the activity level was 55. Good heavens, that really caused me trouble. Our laboratory actually measured an activity level of 66, but such a high density of the oil slurry is really puzzling. The low coking rate indicates that the activity level is poor. I wonder if it’s an aromatic-based oil The freezing point is 26 degrees; please be happy!
I haven’t done the four-component analysis yet; I suggest that the manager do it, and then everything will be clear. However, it seems like the manager doesn’t give it much importance