How to understand the operation of a catalytic device
Thread Content
These days, operations with a high oil-to-air ratio, high reaction temperature, and short reaction time are being promoted. What are the advantages of this? What other shortcomings are there? Such as in terms of product quality
1. An increase in the oil-to-agent ratio leads to a higher conversion rate, an increased coke yield, as well as higher yields of liquefied gas and gasoline and a higher octane number of gasoline. Meanwhile, the density, aniline point, bromine value, and olefin content of gasoline decrease. 2. The catalyst-to-oil ratio is not an independent variable, as the reaction temperature is controlled by adjusting the catalyst circulation rate through the regenerative slide valve; any factor that causes a change in the reaction temperature will affect the catalyst-to-oil ratio. The most effective way to adjust this ratio is by changing the preheating temperature of the feedstock. The preheating temperature of the raw material decreases, while the oil-to-agent ratio increases.
:hug: I hope to hear everyone’s insights
This post was last edited by i-play on 2011-5-31 09:35. Generally, the preheating temperature remains unchanged in order to maintain the atomization effect as well as the burning effect. Appropriately reducing the temperature of the regenerator bed is a good approach. As for the reaction time you mentioned, I believe it is mainly influenced by the reaction pressure; lower reaction pressure means a lower vapor pressure of the oil and gas in the lift column, which increases the gasification rate of the oil and gas and reduces coking, thereby contributing to an increase in yield. A too high reaction temperature is also not desirable. This can be adjusted based on the level of liquid at the bottom of the distillation tower, as well as the dry gas production rate. Adjust slowly to find the most suitable reaction depth. It doesn’t have to be that high; if it’s too high, it turns into dry gas, and coke forms, which is not good