In catalytic reactions, why cannot the amount of catalyst added be too large?
Thread Content
It is said that the amount of additive used is too high, affecting the bed temperature. Why? What are the consequences of affecting the bed temperature?
Feeding is generally carried out using a small feeding system to add fresh material in order to maintain the reaction depth. Sometimes, if the feeding time is too long, it will result in an increase in the reaction depth as well as in the yields of gas and coke, causing overheating in both reactors. In severe cases, carbon accumulation can occur, necessitating the interruption of feed and the use of single-reactor fluidized coking.
If the additive is added in large amounts or quickly, the line speed increases. It can easily cause severe damage to the catalyst. The dosage should be adjusted accordingly based on the catalyst activity and the properties of the raw materials used. It’s not just added casually.
Using too much additive increases energy consumption; the catalyst can also be damaged, raising costs. It is sufficient to ensure that the reaction products meet the required standards