【Daily Question】Catalytic Cracking, Coking, and Reforming Version 20170103
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This post was last edited by 103388716 on 2017-1-3 09:21. To increase the popularity of this section, a daily quiz activity has been launched; the purpose of this activity is: “Learn a little bit every day, and make significant progress over ten days.” I hope everyone will participate actively; by learning and making progress, they can also easily bring wealth home :) Participation: 3 rewards for wealth ； Correct answer: 8 Wealth as a reward. Fill-in-the-blank question (restructured section): The nitrogen content in crude oil is ( ). ≤0.5ppm
Nitrogen content index < 2mg/kg
The nitrogen content in the crude oil (a significant increase usually indicates that the crude oil has become heavier and of lower quality; the contents of polycyclic compounds and aromatics increase accordingly, as do the levels of other impurities, which accelerates the deactivation of the catalyst)
The nitrogen-containing compounds in the feedstock regenerate NH3 under reformation conditions; NH3 can adsorb onto the acidic sites of the catalyst or react with chlorine to form ammonium chloride, thereby weakening the acidic functionality of the catalyst and reducing its isomerization activity.