Catalyst oxidation temperature rise
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During parking of our unit, air was used to purge the pipelines; due to the operator’s failure to conduct a thorough inspection, air entered the reactor, causing the catalyst to oxidize and its temperature to rise. Two of the catalyst beds reached 500°C – will this have a significant impact on the catalyst?
It is a divine-magical catalyst; at 500°C, it has little effect on the catalyst, but this varies depending on the catalyst used
In my opinion, the impact is quite significant; during the shutdown period, there is no logistics activity, and the temperatures measured by thermocouples may not be accurate. In areas where there are no thermocouples, the temperature could be even higher. I suggest that you ask the catalyst manufacturer to conduct an analysis.
We’re driving now, and it seems the catalyst is working well for now; we’ll see how it performs in the future!
Hydrogenation catalyst? 500 is quite high indeed. How was the temperature controlled later on? It’s possible that the overheating couldn’t be managed
It’s a hydrogenation catalyst; nitrogen was continuously fed in to lower the temperature!
How long was the overtemperature? What is the heating rate at over-temperature? It is recommended that you communicate with the technical staff from the catalyst manufacturer to find out more!